500HP Turbo Options
#41
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Franco,
An externally gated turbo adds a MINIMUM of £600 on to the cost of installation (wastegate pipe, spacer plate and wastegate) - that's doing it on the cheap. Once you get to the flow limit of the 2wd manifold, then that cost jumps to £1,500ish (with a tubular manifold and external wastegate)
.
To be honest, apart from for down the pub - when is 500bhp NOT enough for a road car?
. With the new generation of FULL ceramic roller bearing cored T4s - WHY would you want to use anything else to achieve 500-550bhp?
Obviously I have no experience of an integrally gated GT30, but speaking to Vince, he never rated the early versions of this, so I have always stayed away from them. However, like everything - technology moves on, and it wouldn't surprise me to learn that this has now been perfected thanks to constant R&D, but again I haven't seen it tested back to back with the latest generation T4s to see if it offers any improvement over these. Whilst something delivers EXACTLY what I want, I stick with that - for fear of being a turbo manufacturer's guinea-pig / free test-bed
.
An externally gated turbo adds a MINIMUM of £600 on to the cost of installation (wastegate pipe, spacer plate and wastegate) - that's doing it on the cheap. Once you get to the flow limit of the 2wd manifold, then that cost jumps to £1,500ish (with a tubular manifold and external wastegate)
![Surprised](https://passionford.com/forum/images/smilies/shocked.gif)
To be honest, apart from for down the pub - when is 500bhp NOT enough for a road car?
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![007](https://passionford.com/forum/images/smilies/bond.gif)
Obviously I have no experience of an integrally gated GT30, but speaking to Vince, he never rated the early versions of this, so I have always stayed away from them. However, like everything - technology moves on, and it wouldn't surprise me to learn that this has now been perfected thanks to constant R&D, but again I haven't seen it tested back to back with the latest generation T4s to see if it offers any improvement over these. Whilst something delivers EXACTLY what I want, I stick with that - for fear of being a turbo manufacturer's guinea-pig / free test-bed
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#47
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Originally Posted by Mike Rainbird
Jay,
I didn't realise telling you to "fuck-off" was considered fore-play
.
I didn't realise telling you to "fuck-off" was considered fore-play
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Anyway back on topic!!!
![Rolling Eyes](https://passionford.com/forum/images/smilies/icon_rolleyes.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
#49
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Originally Posted by Mike Rainbird
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![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
There IS more to the world than you/harvey have experienced mike![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Your valued opinion on them holds as much water as your opinion on ALS it seems
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
There IS more to the world than you/harvey have experienced mike
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![007](https://passionford.com/forum/images/smilies/bond.gif)
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
And Harvey has done LOADS of GT turboed cars
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![007](https://passionford.com/forum/images/smilies/bond.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Doug,
I think you will find that Harvey is at the fore-front of turbo development
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
#50
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Originally Posted by Paul Ripley
Jay how about using the old hairdyrer you used to have for your luscious locks.. that would have needed some power!
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
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#51
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I bought my Garret GT3082 from www.atpturbo.com, about 1100punds with heatshield and ultimate internal wastegate, think it will perform great!
#52
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Originally Posted by staffi
Originally Posted by Mike Rainbird
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![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
There IS more to the world than you/harvey have experienced mike![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
Your valued opinion on them holds as much water as your opinion on ALS it seems
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
There IS more to the world than you/harvey have experienced mike
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![007](https://passionford.com/forum/images/smilies/bond.gif)
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
And Harvey has done LOADS of GT turboed cars
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![007](https://passionford.com/forum/images/smilies/bond.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Doug,
I think you will find that Harvey is at the fore-front of turbo development
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Red Faced](https://passionford.com/forum/images/smilies/icon_redface.gif)
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
Obviously it is crucial to discuss turbo choice with your engine builder, before buying any turbo. If memory serves me correctly, your engine was built to be able to take a T4 (BUT that needs to be verified), so if this is the case, you would benefit from fitting a bigger turbo, as your engine could deal with this. All that fitting a smaller turbo would result in is perhaps a small loss of response and torque due to the reduction in gas speed with the bigger ports and smaller turbo, than could be achieved with porting matched to the turbo.
#53
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Franco&Mike Rainbird GET A FUCKING ROOM!
So now the T4 is for Gyppo's.....................Great sales pitch Mike!
Funny Cunt!
that Cracked me up!
Anyway! i suppose thinking i could ask a Question on here and get a straight anser was wrong of me
I know that getting your tuner to spec your engine for what power you want Bla Bla..............
What i was trying to get here was some people who have tested diffrent turbos on diffrent spec engines and try to see what there results are
i know you say Harvey is at the forfront mike but has he really had the time to test every new turbo that is on the Market for 500/550hp? if so then thats fair enough i will keep my mouth shut and just and you can do me a 5000 word essay that you can either post up on here or send to me in a Pm Explaining every detail like you have to with everythink else i ask you about!
wouldnt it be nice for a turbo to make 550HP at a Safe amount of Boost that makes full boost at 2500rpm and holds its power untill 8000+rpm as that is what i want myturbo to do for my engine
Maybe thats what i should of ask for in the first place
Originally Posted by Franco
Originally Posted by Mike Rainbird
(other than at the customer's request - as in wanting to have a cheap 500bhp spec).
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![](https://passionford.com/forum/images/smilies/haha_mmm.gif)
Anyway! i suppose thinking i could ask a Question on here and get a straight anser was wrong of me
![Rolling Eyes](https://passionford.com/forum/images/smilies/icon_rolleyes.gif)
I know that getting your tuner to spec your engine for what power you want Bla Bla..............
What i was trying to get here was some people who have tested diffrent turbos on diffrent spec engines and try to see what there results are
i know you say Harvey is at the forfront mike but has he really had the time to test every new turbo that is on the Market for 500/550hp? if so then thats fair enough i will keep my mouth shut and just and you can do me a 5000 word essay that you can either post up on here or send to me in a Pm Explaining every detail like you have to with everythink else i ask you about!
wouldnt it be nice for a turbo to make 550HP at a Safe amount of Boost that makes full boost at 2500rpm and holds its power untill 8000+rpm as that is what i want myturbo to do for my engine
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#54
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Originally Posted by Gatecrasher
wouldnt it be nice for a turbo to make 550HP at a Safe amount of Boost that makes full boost at 2500rpm and holds its power untill 8000+rpm as that is what i want myturbo to do for my engine
Maybe thats what i should of ask for in the first place
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
The ONLY way to achieve your 2500rpm spool up, is with variable vane technology. At this moment in time, there is not a turbo on the market that will achieve what you want (if there was, it WOULD be on my car
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
You can have everything you ask for bar this, as the full boost point is 3500rpm with my engine spec. Hope this helps.
#55
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Hate it when you do that
Ile just shut up then
and you turbo is just an old maram shfted T4 witha 60 trim isnt it? how much you selling them for again?
![](https://passionford.com/forum/images/smilies/angry.gif)
Ile just shut up then
![](https://passionford.com/forum/images/smilies/dors.gif)
and you turbo is just an old maram shfted T4 witha 60 trim isnt it? how much you selling them for again?
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#56
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£2k for my turbo with Mar-M shaft. This is NOT needed though, UNLESS you really want ALS.
You could use just the normal ceramic roller-bearing version which is considerably cheaper (price on my website
), which "may" also offer a few hundred rpm spool up improvement over my standard bearing type core (waiting for Euan to confirm).
You could use just the normal ceramic roller-bearing version which is considerably cheaper (price on my website
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
#57
Testing the future
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Originally Posted by Mike Rainbird
The ONLY way to achieve your 2500rpm spool up, is with variable vane technology. At this moment in time, there is not a turbo on the market that will achieve what you want (if there was, it WOULD be on my car
)
.
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
but variable vane for petrol must come to the aftermarket soon? how about if using different fuel to normal petrol? can you get lower combustion temperatures with E85 or something?
#58
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Originally Posted by foreigneRS
Originally Posted by Mike Rainbird
The ONLY way to achieve your 2500rpm spool up, is with variable vane technology. At this moment in time, there is not a turbo on the market that will achieve what you want (if there was, it WOULD be on my car
)
.
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
but variable vane for petrol must come to the aftermarket soon? how about if using different fuel to normal petrol? can you get lower combustion temperatures with E85 or something?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
![Vomit](https://passionford.com/forum/images/smilies/vomit2.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#59
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I know Euans engine had no problems running big psi with a ported head with standard valves but what sort of gains would be seen with bigger valves ?
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
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Originally Posted by NEIL A
I know Euans engine had no problems running big psi with a ported head with standard valves but what sort of gains would be seen with bigger valves ?
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
#61
Testing the future
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Originally Posted by Mike Rainbird
No idea about the E85 what-so-ever?
![Surprised](https://passionford.com/forum/images/smilies/shocked.gif)
it is very available in your neck of the woods and is known to have a higher RON than SUL. i'm genuinely surprised that you haven't looked into it as you have an ecu with multi map capability
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
#62
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I think alan had to cap it slightly but dont think it was anything too major(dont quote me on that). I know the head i have has similar porting work too Euans but bigger valves, so if i do go forthe same turbo as him later it would be good to compare the results.
#63
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Originally Posted by foreigneRS
Originally Posted by Mike Rainbird
No idea about the E85 what-so-ever?
![Surprised](https://passionford.com/forum/images/smilies/shocked.gif)
it is very available in your neck of the woods and is known to have a higher RON than SUL. i'm genuinely surprised that you haven't looked into it as you have an ecu with multi map capability
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#64
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Mike is correct unlike his als post
It is not wise for anyone to slagg off the to4e it was specced by cosworth for the rs500 at 500bhp and is there fore hard to better, you can spend a lot of time and money getting over excited with the latest tech spec only to be beaten by an old 1987 rs500 that cost a fraction to build .You cannot redesign the wheel they say.Mike is a living example of teccie spending
Do not run a 60 trim bently comp wheel on a to4e unless you have redisgned the rest of the engine surge city.
Remember big is not always best or better it is just bigger
size does matter![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
would you buy size 12 shoes to look bigger and better when you only have size 9 feet
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
It is not wise for anyone to slagg off the to4e it was specced by cosworth for the rs500 at 500bhp and is there fore hard to better, you can spend a lot of time and money getting over excited with the latest tech spec only to be beaten by an old 1987 rs500 that cost a fraction to build .You cannot redesign the wheel they say.Mike is a living example of teccie spending
![Pthbbbb](https://passionford.com/forum/images/smilies/smile045.gif)
Do not run a 60 trim bently comp wheel on a to4e unless you have redisgned the rest of the engine surge city.
Remember big is not always best or better it is just bigger
size does matter
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
would you buy size 12 shoes to look bigger and better when you only have size 9 feet
#65
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Originally Posted by T S M
It is not wise for anyone to slagg off the to4e it was specced by cosworth for the rs500...........
So yes, it could'nt be slaged off back in the day, allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
We DO have a choice of big turbos nowadays, which is nice
![Raz](https://passionford.com/forum/images/smilies/tongue.gif)
#66
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Originally Posted by Mike Rainbird
All I know is that it hasn't got as high energy as normal fuel, so although higher ocatne, you use a lot more of it per specific output. I also don't know how hot it burns, and when reading about it on the Lotus, they said that certain mods had to be carried out to the engine to run the fuel, but did not reveal what these were. Accordingly prudence prevented me from trying it on my new engine
.
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
there are certain issues with corrosion of the fuel system etc that would mean changes on a mass production vehicle - don't know about a custom system like you have
the time of a new engine would have been the right time to change. you could have then optimised the c/r to suit and made any changes necessary
reading around on t'internet the combustion temperature is lower than normal petrol
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#67
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Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
what is the problem with gt series then that makes people slate them?
#68
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doug you seem to have read something else into my posy that I didn't say.
Perhaps I should have added that there are many more modern turbo's available bla bla bla
You seem to have read into my post that the gt range is not as good as the to4e can't see that I wrote that in my post.
What my post was saying is that it is important to spec the turbo to the engine and engine to the turbo.Which is what the to4e was.(was is past tense)
Lag was indeed mention in the 80's on the to4e but do remember it was an homolagation special and was never a road car no lag issues on the race rs500 reving to 8300.
JCB for you doug lol
The lag on the road going rs500 was due to the exhaust flow restrictors fitted to the front pipe
Perhaps I should have added that there are many more modern turbo's available bla bla bla
You seem to have read into my post that the gt range is not as good as the to4e can't see that I wrote that in my post.
What my post was saying is that it is important to spec the turbo to the engine and engine to the turbo.Which is what the to4e was.(was is past tense)
Lag was indeed mention in the 80's on the to4e but do remember it was an homolagation special and was never a road car no lag issues on the race rs500 reving to 8300.
JCB for you doug lol
The lag on the road going rs500 was due to the exhaust flow restrictors fitted to the front pipe
#69
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Originally Posted by NIL 7717
Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
what is the problem with gt series then that makes people slate them?
#70
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Originally Posted by T S M
Originally Posted by NIL 7717
Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
what is the problem with gt series then that makes people slate them?
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#71
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Originally Posted by Franco
Originally Posted by NEIL A
I know Euans engine had no problems running big psi with a ported head with standard valves but what sort of gains would be seen with bigger valves ?
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
Mike from what you said above think i might need to start saving for a new gearbox and a T4 if the head work is going to make it flat and down on torque running a T38.
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
Surge is something that we want avoid at all costs.
A turbo that surges its tits off and maybe gains me 20 bhp top end power will not last long on my car before we fit either a smaller compressor or a bigger turbine.
A nice wide power band is what makes a good road engine IMO.
I have seen bigger GT type turbos against a T4 in various graphs and I would not swap for either of them.
#72
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Originally Posted by NIL 7717
Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
#73
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Originally Posted by L8 ECU
Originally Posted by NIL 7717
Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
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#74
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Originally Posted by RWD_cossie_wil
Originally Posted by L8 ECU
Originally Posted by NIL 7717
Originally Posted by L8 ECU
allthough the motoiring mags did pick up on the "lag city" response of the RS500
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
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#75
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Mike Rainbird
in my experience mike i have come across alot of"big bhp"cars that have fallen short against supposed lower bhp figured cars. i put this down many times to three things. 1.the owner is full of shit and blowing imaginary figures out is arse or 2.the car has a poorly put together car that has the wrong bits together or 3.a very badly set up car.
i'd be very happy with a corrctly set up high-ish power car that can perform right rather than a "it made 580bhp on the rollers but its got fueling or boost issues"car
in my experience mike i have come across alot of"big bhp"cars that have fallen short against supposed lower bhp figured cars. i put this down many times to three things. 1.the owner is full of shit and blowing imaginary figures out is arse or 2.the car has a poorly put together car that has the wrong bits together or 3.a very badly set up car.
i'd be very happy with a corrctly set up high-ish power car that can perform right rather than a "it made 580bhp on the rollers but its got fueling or boost issues"car
#76
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Bigger Gt turbos are good if you plan on really revving the car, in race application etc where a T4 sized turbo would be out of puff.
My advice is have a look on the garret web site and take some time to look at the compressor maps.
Its easier if you can get someone to explain them to you but its possible with a bit of time to be able to understand them and it makes turbo choice a lot easier.
My advice is have a look on the garret web site and take some time to look at the compressor maps.
Its easier if you can get someone to explain them to you but its possible with a bit of time to be able to understand them and it makes turbo choice a lot easier.
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