The YB Turbo Thread! :)
28-11-2010, 06:34 PM
#1
Advanced PassionFord User
Thread Starter
The YB Turbo Thread! :)
Ive read and heard about different turbos being used on the YB engine, so Now i want to make a thread where people can add rolling road graphs inc spec and their opinion of their turbo, Would help many people out.
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, .48 exhaust housing with either .55 or .60 compressor trim. The 3 door and 2wd sapphire cosworths use a slightly smaller .55 trim compressor, good for around 320bhp( give or take a few bhp). The 4x4 Sapphire uses the slightly larger .60 trim good for 330+ bhp.
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 380bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures!
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400 on a standard engine.
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example,You will either need a t4 manifold flange for a 2wd manifold ( very rare) or need another manifold to fit this, Many people used to use t4's back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, They can be direct bolt if you get the right turbine housing with the 3 bolt flange, however they can come with 3" v band flanges, which means you have to use an external wastegate on and are good for 500bhp, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger ( edited by jimbo
)
Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Holset turbos, usually found on cummins diesel engines, norweigians use these quite alot because theyre very robust and make good power, 22psi on a yb can make in the region of 400
H1e, t3 flange turbine wise, this turbo is quite rare but you can find them on volvo fl7 lorrys, the turbos look massive in real life, are a cheaper alternative to a gt30, can take upto 40 psi of boost-450-500bhp, can come with internal actuator and 3" v band but can be used with external, £400-500 new
hx30 is similar to the h1e, but doesnt use an internal wastegate, has to use external.3" v band outlet, £500-600 new
Hx35, this turbos bigger than the h1e and hx30, good for 600bhp, same costs to buy as a hx30.
Hx40-45 range, now your talking 600-800 bhp, Very large turbo, similar to the gt42 but once again cheaper than garret genuine item
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
External wastegates!BETTER BOOST CONTROL FOR OVER 450-500+bhp
You can buy a manifold adaptor from reyland or pj motorsport if you would like to use your standard 2wd manifold, if you have 4x4 you cant, The only other alternative is another manifold, dont be tempted to buy an ebay cheap job for £180! i imagine you will have nothing but problems with them!
You can use 38-60mm external wastegates, i personally would use something thats 46-50mm thats been tried and tested like a 2nd hand Tial or hks-greddy-trust, Or if you want new buy Tial, ive never heard anything bad from them, expensive but a good wastegate. Will update more on wastegates tomorow 29/11/10
Theres other replys down below to help about turbine housings etc!
If theres anything you want me to change please say and il edit!
cheers!
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, .48 exhaust housing with either .55 or .60 compressor trim. The 3 door and 2wd sapphire cosworths use a slightly smaller .55 trim compressor, good for around 320bhp( give or take a few bhp). The 4x4 Sapphire uses the slightly larger .60 trim good for 330+ bhp.
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 380bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures!
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400 on a standard engine.
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example,You will either need a t4 manifold flange for a 2wd manifold ( very rare) or need another manifold to fit this, Many people used to use t4's back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, They can be direct bolt if you get the right turbine housing with the 3 bolt flange, however they can come with 3" v band flanges, which means you have to use an external wastegate on and are good for 500bhp, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger ( edited by jimbo
)Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Holset turbos, usually found on cummins diesel engines, norweigians use these quite alot because theyre very robust and make good power, 22psi on a yb can make in the region of 400
H1e, t3 flange turbine wise, this turbo is quite rare but you can find them on volvo fl7 lorrys, the turbos look massive in real life, are a cheaper alternative to a gt30, can take upto 40 psi of boost-450-500bhp, can come with internal actuator and 3" v band but can be used with external, £400-500 new
hx30 is similar to the h1e, but doesnt use an internal wastegate, has to use external.3" v band outlet, £500-600 new
Hx35, this turbos bigger than the h1e and hx30, good for 600bhp, same costs to buy as a hx30.
Hx40-45 range, now your talking 600-800 bhp, Very large turbo, similar to the gt42 but once again cheaper than garret genuine item
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
External wastegates!BETTER BOOST CONTROL FOR OVER 450-500+bhp
You can buy a manifold adaptor from reyland or pj motorsport if you would like to use your standard 2wd manifold, if you have 4x4 you cant, The only other alternative is another manifold, dont be tempted to buy an ebay cheap job for £180! i imagine you will have nothing but problems with them!
You can use 38-60mm external wastegates, i personally would use something thats 46-50mm thats been tried and tested like a 2nd hand Tial or hks-greddy-trust, Or if you want new buy Tial, ive never heard anything bad from them, expensive but a good wastegate. Will update more on wastegates tomorow 29/11/10
Theres other replys down below to help about turbine housings etc!
If theres anything you want me to change please say and il edit!
cheers!
Last edited by crumpet; 13-12-2010 at 10:41 PM.
28-11-2010, 06:40 PM
#2
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Got one of these, works well, not sure i would trust it to make that power, but certainly will do 300bhp
28-11-2010, 06:48 PM
#3
Ive read and heard about different turbos being used on the YB engine, so Now i want to make a thread where people can add rolling road graphs inc spec and their opinion of their turbo, Would help many people out.
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, The original turbo fitted to 3 door and sapphire cosworths, good for around 320bhp( give or take a few bhp) Turbo gives a good kick and is responsive, cheap to buy and many around
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 370bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures! You can get around 380/5
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400-420 on a standard engine. Standard engine with a t34 wouldn't see 400 without compromising turbo life expectancy big time and deffinately wouldn't do 420 unless the engines had some serious work
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example, Many people used to use this back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, Theyre direct bolt on and are good for 500bhp, the difference in the 71 and 76 are the size of the compressor housings, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger
Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
If theres anything you want me to change please say and il edit!
cheers!
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, The original turbo fitted to 3 door and sapphire cosworths, good for around 320bhp( give or take a few bhp) Turbo gives a good kick and is responsive, cheap to buy and many around
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 370bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures! You can get around 380/5
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400-420 on a standard engine. Standard engine with a t34 wouldn't see 400 without compromising turbo life expectancy big time and deffinately wouldn't do 420 unless the engines had some serious work
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example, Many people used to use this back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, Theyre direct bolt on and are good for 500bhp, the difference in the 71 and 76 are the size of the compressor housings, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger
Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
If theres anything you want me to change please say and il edit!
cheers!
29-11-2010, 07:04 AM
#15
ive got the following on mine and its a great set up making the car very responsive concidering spec...
gt35 roller bearing
tial external waste gate with screamer pipe
purpose built engine useing standard compression and pocketed pistons
fully worked head
custom cams grace engines spec
autronic sm4 management with anti lag ect mapped by mark shead
1000cc injectors
big intercooler and rad
bigger fuel pump
and loads more i split the boost pipe on way to rolling road but at 1.5 bar boost made 414bhp and 416lbs@ just under 4k but was losing most of its boost, its mapped at 2.2bar
so at 2.2bar ive been told to expect 520bhp and 450lbs but as i said its very responsive
and on the way is the boost hose lol and i will see what it runs this week but im booking it in for a hart inlet and remap with mark and ive been told to expect anything from 550bhp to 580bhp so cant wait
gt35 roller bearing
tial external waste gate with screamer pipe
purpose built engine useing standard compression and pocketed pistons
fully worked head
custom cams grace engines spec
autronic sm4 management with anti lag ect mapped by mark shead
1000cc injectors
big intercooler and rad
bigger fuel pump
and loads more i split the boost pipe on way to rolling road but at 1.5 bar boost made 414bhp and 416lbs@ just under 4k but was losing most of its boost, its mapped at 2.2bar
so at 2.2bar ive been told to expect 520bhp and 450lbs but as i said its very responsive
and on the way is the boost hose lol and i will see what it runs this week but im booking it in for a hart inlet and remap with mark and ive been told to expect anything from 550bhp to 580bhp so cant wait
12-12-2010, 05:56 PM
#17
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Have anyone of you tried this option?
http://www.atpturbo.com/mm5/merchant...egory_Code=GTH
It's a .78 divided turbine housing for the GT30/35 series. In theory it should work really well with 2wd manifold which is also divided or "twin entry". What i'm after is the flow like in the .82 and the spool up like in the .63 housing.... Could be interesting to hear opinions about it and/or experiences.
http://www.atpturbo.com/mm5/merchant...egory_Code=GTH
It's a .78 divided turbine housing for the GT30/35 series. In theory it should work really well with 2wd manifold which is also divided or "twin entry". What i'm after is the flow like in the .82 and the spool up like in the .63 housing.... Could be interesting to hear opinions about it and/or experiences.
12-12-2010, 07:20 PM
#18
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12-12-2010, 07:22 PM
#19
PassionFord Post Whore!!
Have anyone of you tried this option?
http://www.atpturbo.com/mm5/merchant...egory_Code=GTH
It's a .78 divided turbine housing for the GT30/35 series. In theory it should work really well with 2wd manifold which is also divided or "twin entry". What i'm after is the flow like in the .82 and the spool up like in the .63 housing.... Could be interesting to hear opinions about it and/or experiences.
http://www.atpturbo.com/mm5/merchant...egory_Code=GTH
It's a .78 divided turbine housing for the GT30/35 series. In theory it should work really well with 2wd manifold which is also divided or "twin entry". What i'm after is the flow like in the .82 and the spool up like in the .63 housing.... Could be interesting to hear opinions about it and/or experiences.
You need a 1.06 for it to work and divide the wastegate.
Mark
13-12-2010, 01:32 PM
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13-12-2010, 01:52 PM
#21
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, They can be direct bolt if you get the right turbine housing with the 3 bolt flange, however they can come with 3" v band flanges, which means you have to use an external wastegate on and are good for 500bhp, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm!
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, They can be direct bolt if you get the right turbine housing with the 3 bolt flange, however they can come with 3" v band flanges, which means you have to use an external wastegate on and are good for 500bhp, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm!
With a 3" V band GT30 you can still use internally gated!!
13-12-2010, 01:58 PM
#22
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Originally Posted by crumpet
Ive read and heard about different turbos being used on the YB engine, so Now i want to make a thread where people can add rolling road graphs inc spec and their opinion of their turbo, Would help many people out.
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, .48 exhaust housing with either .55 or .60 compressor trim. The 3 door and 2wd sapphire cosworths use a slightly smaller .55 trim compressor, good for around 320bhp( give or take a few bhp). The 4x4 Sapphire uses the slightly larger .60 trim good for 330+ bhp.
The Turbo gives a good kick and is responsive with great torque outputs when running high boost, cheap to buy and many around.
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 370bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures! You can get around 380/5
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400-420 on a standard engine. Standard engine with a t34 wouldn't see 400 without compromising turbo life expectancy big time and deffinately wouldn't do 420 unless the engines had some serious work
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example, Many people used to use this back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, Theyre direct bolt on and are good for 500bhp, the difference in the 71 and 76 are the size of the compressor housings, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger
Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
If theres anything you want me to change please say and il edit!
cheers!
JUST EDITED THE T3 SECTION. Ta
Ive read and heard about different turbos being used on the YB engine, so Now i want to make a thread where people can add rolling road graphs inc spec and their opinion of their turbo, Would help many people out.
A simple explanation of different turbos to my knowlege
T25 fitted to the small turbo escort cosworths, this turbo isnt used by many as it runs out of puff at the high 200's, quite a rare turbo.
T28, this is good for low 300's and is a good small turbo that comes on boost very early, But very rare as was only fitted to the 67 rouse cosworths, Once again not many people use this turbo as for the money its easier and more sensible to go for a t34.
T3, .48 exhaust housing with either .55 or .60 compressor trim. The 3 door and 2wd sapphire cosworths use a slightly smaller .55 trim compressor, good for around 320bhp( give or take a few bhp). The 4x4 Sapphire uses the slightly larger .60 trim good for 330+ bhp.
The Turbo gives a good kick and is responsive with great torque outputs when running high boost, cheap to buy and many around.
T34 is the turbo fitted to big turbo escort cosworths, Which can be bought 2nd hand for £300-500 on average, All round good turbo,Punchy and reliable, Theres 3 different variations of turbo housings, .48, .55 and .63 ( .63 being the biggest)
.48 will max out @ 370bhp so ive been told by msd as james has proven this, the .48 is a good punchy turbo which comes on boost early and produces good figures! You can get around 380/5
.55 is the mid range, rare turbine housing
.63 Is the biggest size of housings, ive been told once again by MSD that this housing is good for 400-420 on a standard engine. Standard engine with a t34 wouldn't see 400 without compromising turbo life expectancy big time and deffinately wouldn't do 420 unless the engines had some serious work
T4, This is a alot bigger turbo than the above, getting rare to find now days, the T4 was fitted to the rs500 from standard, Its good for 500-550bhp, But is a laggy old brute compared to a t34.48 for example, Many people used to use this back in the 90's as there was no variant to make over 450-500, How ever now days we have the....
Gt30 range of turbos, starting with the
Gt3071r and Gt3076r, These turbos are costly new, ranging from £900-1100, Theyre direct bolt on and are good for 500bhp, the difference in the 71 and 76 are the size of the compressor housings, The 76 will make more power than the 71, Theyre good for 450-500+bhp Plus maintain drivabilty, mark shead from MAD mapped a car on a gt3071r and managed to make 2.2bar of boost by 3700rpm! The difference between 3071/3076 is the size of the compressor wheel also, its a bit bigger
Moving along from the GT30 range are GT35's
These are turbos that are similar to the gt30's, but are for alot more power, 500-700,I havent really looked into these much as ive never thought about over 500bhp, But theres quite a few options for these, example a gt3582r is good for 600-630 bhp, capable of over 2 bar bar,they can make this by early 4000 rpm.
Cheap chinese turbo's Like TO4E and T70...
The TO4e is a cheap turbo, good for 400-450bhp, The turbine housing is similar to a t3, .50 and the compressor a t4, these turbos Can be ok but are nothing compared to the build quality of a garret.You can pick these up for as little as £150 new.
T70, good for 600 bhp, its a cheap alternative of a gt35 but once again misses quality, you can pic these up for £200
Ive also seen Kkk27 turbos and other variations used on the YB engine, this isnt a proven guide, its just a rough estimate of what i know to my knowlege, as i asked at the top of my thread i would like graphs and spec please, and what your car drives like and what your opinion is, this would be great and would help me and others out
If theres anything you want me to change please say and il edit!
cheers!
JUST EDITED THE T3 SECTION. Ta
Last edited by cossieDavedree; 13-12-2010 at 02:02 PM.
13-12-2010, 07:04 PM
#25
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13-12-2010, 10:42 PM
#28
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T3, .48 exhaust housing with either .55 or .60 compressor trim. The 3 door and 2wd sapphire cosworths use a slightly smaller .55 trim compressor, good for around 320bhp( give or take a few bhp). The 4x4 Sapphire uses the slightly larger .60 trim good for 330+ bhp.
JUST EDITED THE T3 SECTION. Ta
JUST EDITED THE T3 SECTION. Ta
steve give me info mate as never looked into t38s and il edit it into there
cheers
14-12-2010, 06:11 AM
#30
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That sounds good. But why is it that only 1.06 can be used to do it correcly, and what components do you need besides 2wd manifold, twin scroll turbo and external wastegate?
14-12-2010, 10:47 AM
#31
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twin scroll are commercial turbos small rpm range they need to spool quick for more power,
petrol uses a bigger rpm don't really need twin scroll, as what you pic up bottom end you will lose top end as the restriction in the housing just like using a smaller turbine ,
what i'am tring to say is a .86 twin scroll will spool quicker than a single entry .86
but the single at high rpm will make more power [not unless you've gone too big on the exhaust housing then twin scroll will be better as its so bigg that there going to be no restriction top end
and will spool a bit quicker but it will be really fill bigg]
petrol uses a bigger rpm don't really need twin scroll, as what you pic up bottom end you will lose top end as the restriction in the housing just like using a smaller turbine ,
what i'am tring to say is a .86 twin scroll will spool quicker than a single entry .86
but the single at high rpm will make more power [not unless you've gone too big on the exhaust housing then twin scroll will be better as its so bigg that there going to be no restriction top end
and will spool a bit quicker but it will be really fill bigg]
14-12-2010, 11:01 AM
#32
i know its not been done yet (to my knowlage) but has a tuner ever toiled with the idea of twin sequential turbo's? for a good driveability
for example on a standard rx7 they have a small turbo and a bigger turbo (still pretty small) so you get boost from almost 1500rom then more boost that kicks at about 5K
alot of people convert to single turbo on the rx7's so all these turbo's get binned, but could you not theoretically do this with another set of turbo's and make 400bhp with almost zero lag?
for example on a standard rx7 they have a small turbo and a bigger turbo (still pretty small) so you get boost from almost 1500rom then more boost that kicks at about 5K
alot of people convert to single turbo on the rx7's so all these turbo's get binned, but could you not theoretically do this with another set of turbo's and make 400bhp with almost zero lag?
14-12-2010, 11:48 AM
#33
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check this did'nt think i would ever see this work on a petrol load's of pipe work
http://www.youtube.com/watch?v=y-Me6yWApzY
http://www.youtube.com/watch?v=y-Me6yWApzY
14-12-2010, 03:09 PM
#35
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14-12-2010, 09:55 PM
#37
i mean sequentially turbo charging. you get parallel twin turbos which is where 2 identical turbochargers function simultaneously, equally splitting the turbocharging duties for example on a straight 6 having 2 T104E's being few by 3 cylinders each running 14psi and you get sequential turbos which are set-up with one turbocharger for lower engine speeds, and a second or both turbochargers in some cases at higher engine speeds. typically the larger turbos are not as efficient at low RPMs so you lower intake pressures making them laggy as foook. while almost opposite smaller turbos spool up quickly at low RPMs with almost no lag but cant supply enough air at higher RPMs. so instead of having one ... or the other. why not have both is what im saying, like a mazda rx7 or possible (dont quote me on this as i need to look into what cars have this set up) some of the modern derv BMW's
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