500HP Turbo Options
#1
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500HP Turbo Options
Hi,
Im intrested to know what peoples Views are on what is the best Turbo for a 500/550HP Engine
we all know a T4 can make 500HP but what with Lag and boost threshold there has to be and is better turbos out there please give you views and what you think is the best turbo out at the moment
im not just talking about Garrett turbos either HKS, KKK, Turbonetics or any other you can think of
Opinions and facts wanted
Im intrested to know what peoples Views are on what is the best Turbo for a 500/550HP Engine
we all know a T4 can make 500HP but what with Lag and boost threshold there has to be and is better turbos out there please give you views and what you think is the best turbo out at the moment
im not just talking about Garrett turbos either HKS, KKK, Turbonetics or any other you can think of
Opinions and facts wanted
#4
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How about one of the latest ball bearing T4 options?
Also depends if you want to go down the route and minor inconvenience of an external wastegate etc.
Also depends if you want to go down the route and minor inconvenience of an external wastegate etc.
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#8
DEYTUKURJERBS
glancy- badly specced engines and tiny exhaust housings.
on GT series turbos just pick the middle of the 3 options, the one the compressor was specced for in the first place.
on GT series turbos just pick the middle of the 3 options, the one the compressor was specced for in the first place.
#9
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was told that they are the best option with correct cam and head choice .i have an internal wastegate one for my escort in ma shed which a will try one day
#10
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Guys, you should stop using the old type turbos on your cossies...
Go ball bearing and you with be amazed!
The GT30 as proposed, if it is the garrett 3037S or 3082R or GT30R then yes i agree, is one of the best 500-550 crank ps turbos money can buy...
Go ball bearing and you with be amazed!
The GT30 as proposed, if it is the garrett 3037S or 3082R or GT30R then yes i agree, is one of the best 500-550 crank ps turbos money can buy...
#12
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Gatecrasher
Thats the million f***ing dollar question Ben!
Just remember to budget for a GT30, intial outlay is good until you start adding all the other gubbins needed like wastegate, wastegate manifold and the gt flange - just shy of 1800.00.......
And i'm not sure on this new roller bearing T4 either So MIGHT just got the GT30 route to save fucking around
Thats the million f***ing dollar question Ben!
Just remember to budget for a GT30, intial outlay is good until you start adding all the other gubbins needed like wastegate, wastegate manifold and the gt flange - just shy of 1800.00.......
And i'm not sure on this new roller bearing T4 either So MIGHT just got the GT30 route to save fucking around
#13
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I personally do not think it is wise to chose a turbo for it's "on-paper" spec. This is because quite often, the turbo has not been tested EVER on the engine it is supposed to be "the dog's danglies" for .
I have seen a couple of turbos that have been tested by Harvey that you would THINK that according to their specs "should" be the better than sliced bread , where the reality is that it falls short in actual flow due to the shape and design of the compressor wheel.
The best thing you can do is LISTEN to your tuner and go for the turbo that has been tested to the spec of engine you are wanting them to build you. Trying to pick a turbo on your own with help from "man down't pub" will be VERY hit and miss .
The only people I would EVER listen to regarding turbo choice and spec are those that have access to an engine dyno to actually TEST the flow / response and power outputs of these in the really world on a real engine.
As a prime example, the GT-K650 turbo on Andy Gallagher's Focus was supposed to be all singing and dancing compared to the T66 that WAS on it, and although it ultimately flowed a fraction more power, it lost 500rpm of boost threshold .
I have seen a couple of turbos that have been tested by Harvey that you would THINK that according to their specs "should" be the better than sliced bread , where the reality is that it falls short in actual flow due to the shape and design of the compressor wheel.
The best thing you can do is LISTEN to your tuner and go for the turbo that has been tested to the spec of engine you are wanting them to build you. Trying to pick a turbo on your own with help from "man down't pub" will be VERY hit and miss .
The only people I would EVER listen to regarding turbo choice and spec are those that have access to an engine dyno to actually TEST the flow / response and power outputs of these in the really world on a real engine.
As a prime example, the GT-K650 turbo on Andy Gallagher's Focus was supposed to be all singing and dancing compared to the T66 that WAS on it, and although it ultimately flowed a fraction more power, it lost 500rpm of boost threshold .
#15
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Originally Posted by NIL 7717
why are the gt series hated so much then? i thought they were supposed to be good.
I think a few people think they're quite weak and have heard a few nasty stories about them, think some have had SURGE issues with them too, i know alot of the Evo boys who have them and have NEVER had any problems at all, personal choice at the end of the day.
True what Mike says though, have a word with your builder/mapper and go from there...
#16
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Well Martin seems to like them on his cars, but then i guess his opinion doesnt count due to him not having a engine dyno...........
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R.
We need Mark S to jump in here as he'll have shit loads of Dyno data for the GT series.............
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R.
We need Mark S to jump in here as he'll have shit loads of Dyno data for the GT series.............
#17
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i would have a GT series any day, the surge issues IMO are all down to badly spec'd headwork and cams to suit the turbo flow characteristics, Its quite a commonly used turbo outside the ford scene.
Yes there is a scene outside fords.
Yes there is a scene outside fords.
#19
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Originally Posted by Ryan
i would have a GT series any day, the surge issues IMO are all down to badly spec'd headwork and cams to suit the turbo flow characteristics, Its quite a commonly used turbo outside the ford scene.
Yes there is a scene outside fords.
Yes there is a scene outside fords.
Agree Ryan, that's what we're saying about the turbo not suiting the headwork etc.
#21
Originally Posted by Franco
Well Martin seems to like them on his cars, but then i guess his opinion doesnt count due to him not having a engine dyno...........
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R....
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R....
He's live mapped quite a few cars on GT30's. Some of these engines are running very close to the turbo's strength limit, with huge boost figures just to see just how much punishment these turbos can take (by customers request I should add. )
#23
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Im currently specing up a Gt30 for the Zetec enegine, totally agreee mith Mike R its improtant that you spec the turbo to the spec of the engine etc not the other way round.
I found out the hard way on the current engine, i presumed a and b will work with c, it fits so it will work.
Caused nothing but problems when mapping so had to change items.
Build the engine then spec the turbo to work best with that application.
I found out the hard way on the current engine, i presumed a and b will work with c, it fits so it will work.
Caused nothing but problems when mapping so had to change items.
Build the engine then spec the turbo to work best with that application.
#24
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Originally Posted by L8 ECU
Originally Posted by Franco
Well Martin seems to like them on his cars, but then i guess his opinion doesnt count due to him not having a engine dyno...........
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R....
By the way i'm not biased towards him, as i may (IF PROVEN) go the T4 route off Mike R....
He's live mapped quite a few cars on GT30's. Some of these engines are running very close to the turbo's strength limit, with huge boost figures just to see just how much punishment these turbos can take (by customers request I should add. )
Doug, what boost are you running on yours?? what power did yours make Doug?? i can't remeber reading/seeing it anywhere.
#25
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Originally Posted by Mike Rainbird
Franco,
Lee and Warren's GT35s surge their tits off and Doug's did the same (so he switched to a GT30, as he hated the GT35 THAT much), and Lee is wanting to do the same. But apart from that, your reasoning holds as much water as a sieve .
Lee and Warren's GT35s surge their tits off and Doug's did the same (so he switched to a GT30, as he hated the GT35 THAT much), and Lee is wanting to do the same. But apart from that, your reasoning holds as much water as a sieve .
Ps answer my bloody email from yesterday
#26
Originally Posted by staffi
............Doug, what boost are you running on yours?? what power did yours make Doug?? i can't remeber reading/seeing it anywhere.
I can put up an Interpro RR graph of when it was on 2.2 BAR peak, it was over 550 BHP then.............Not been near a set of rollers for over a year, so dont know what the power/torque is at the moment.
#27
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Originally Posted by m4dyeti
Im currently specing up a Gt30 for the Zetec enegine, totally agreee mith Mike R its improtant that you spec the turbo to the spec of the engine etc not the other way round.
I found out the hard way on the current engine, i presumed a and b will work with c, it fits so it will work.
Caused nothing but problems when mapping so had to change items.
Build the engine then spec the turbo to work best with that application.
I found out the hard way on the current engine, i presumed a and b will work with c, it fits so it will work.
Caused nothing but problems when mapping so had to change items.
Build the engine then spec the turbo to work best with that application.
In MY opinion, the first thing you need to do is decide on the power you WANT to achieve. I would then chose a turbo that will either comfortably / just about achieve this - depending on how you want the car to drive. I would THEN build the engine to work with the given turbo (cams, head work etc). This way, it will be perfectly matched.
All my engines have been built this way .
#28
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Originally Posted by Franco
Originally Posted by Mike Rainbird
Franco,
Lee and Warren's GT35s surge their tits off and Doug's did the same (so he switched to a GT30, as he hated the GT35 THAT much), and Lee is wanting to do the same. But apart from that, your reasoning holds as much water as a sieve .
Lee and Warren's GT35s surge their tits off and Doug's did the same (so he switched to a GT30, as he hated the GT35 THAT much), and Lee is wanting to do the same. But apart from that, your reasoning holds as much water as a sieve .
Ps answer my bloody email from yesterday
#30
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I'm runnin GT35.
Doesn't surge, but am runnin a NMS base MAP @ mo & only bar boost !
Was lead to believe the surging issue's was down to Head/Cam spec too ! Mine seems to work but the timing might be well backed off ! It is laggy !
Jb
Doesn't surge, but am runnin a NMS base MAP @ mo & only bar boost !
Was lead to believe the surging issue's was down to Head/Cam spec too ! Mine seems to work but the timing might be well backed off ! It is laggy !
Jb
#31
DEYTUKURJERBS
Mike- you can slag GT series turbos all you like, but its NOT the problem of the turbo, as in the non-cossie world everyone uses counltess GT series turbos with no issues etc.
Your valued opinion on them holds as much water as your opinion on ALS it seems
There IS more to the world than you/harvey have experienced mike
Your valued opinion on them holds as much water as your opinion on ALS it seems
There IS more to the world than you/harvey have experienced mike
#32
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Originally Posted by Franco
So your saying Lee's and Warrens do this? (Sorry i havent heard these 2 cars so can't comment).
If Lee sees this, I'm sure he will comment. However, I know that his definitely needs the map sorting, as they keep saying that they're going to do this, but just never get round to it .
#33
Originally Posted by Stavros
Your valued opinion on them holds as much water as your opinion on ALS it seems
There IS more to the world than you/harvey have experienced mike
There IS more to the world than you/harvey have experienced mike
#34
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Originally Posted by Mike Rainbird
Originally Posted by Franco
So your saying Lee's and Warrens do this? (Sorry i havent heard these 2 cars so can't comment).
If Lee sees this, I'm sure he will comment. However, I know that his definitely needs the map sorting, as they keep saying that they're going to do this, but just never get round to it .
#36
Caraholic
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Originally Posted by Stavros
Mike- you can slag GT series turbos all you like, but its NOT the problem of the turbo, as in the non-cossie world everyone uses counltess GT series turbos with no issues etc.
Your valued opinion on them holds as much water as your opinion on ALS it seems
There IS more to the world than you/harvey have experienced mike
Your valued opinion on them holds as much water as your opinion on ALS it seems
There IS more to the world than you/harvey have experienced mike
And Harvey has done LOADS of GT turboed cars . However, in back to back tests the T-series roller-bearing ones have better flow capabilities for high power cars . The GT ones are not the be-all and end-all of turbos - as I have said, you pick the turbo and then build the engine around that - not the other way round .
Doug,
I think you will find that Harvey is at the fore-front of turbo development . MY choice to go with the T4, as I wanted to retain the ALS and wanted a turbo that could take this kind of CONSTANT abuse. I don't know of ANY other engine that Harvey has built recently that has a T4 on (other than at the customer's request - as in wanting to have a cheap 500bhp spec).
#37
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Originally Posted by CossieRich
Originally Posted by Mike Rainbird
Originally Posted by Franco
So your saying Lee's and Warrens do this? (Sorry i havent heard these 2 cars so can't comment).
If Lee sees this, I'm sure he will comment. However, I know that his definitely needs the map sorting, as they keep saying that they're going to do this, but just never get round to it .
#38
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Originally Posted by Mike Rainbird
(other than at the customer's request - as in wanting to have a cheap 500bhp spec).
#39
Originally Posted by Mike Rainbird
.......Hence why Doug down-sized and Lee wants to.
#40
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I understand about the problems with using too big a turbo for the head and cam spec , would there be any problems running too small a turbo??
The engine im getting built justnow has enough head work to flow a GT35 a but due to wanting the gearbox to last untill i upgrade and already having a nearly new T38 sitting thats going on justnow.
The engine im getting built justnow has enough head work to flow a GT35 a but due to wanting the gearbox to last untill i upgrade and already having a nearly new T38 sitting thats going on justnow.