GT30 & T38 TURBOS-Update...Compressor map needed!
30-05-2007, 12:18 PM
#42
I had one running at 419bhp (engine dyno - peaking at 34psi and holding 26psi (7000rpm), and that used to die every 3 months 
. I was told that I had to either turn the boost down or fit a higher flow turbo to retain the power (but at a boost figure the turbo was comfortable with). So that is what I did. But as I said, a T34 is really only 370bhp turbo, so anything above that is going to shorten it's life and the harder you push, the shorter that life.
I would certainly aim for 400bhp absolute TOPS if it was mine, and even then, if that is achieved at high boost pressures (due to a volumetrically inefficient engine), then you will still have trouble with it shitting itself...
Keep the boost below 2 bar and it should last okay
.
. I was told that I had to either turn the boost down or fit a higher flow turbo to retain the power (but at a boost figure the turbo was comfortable with). So that is what I did. But as I said, a T34 is really only 370bhp turbo, so anything above that is going to shorten it's life and the harder you push, the shorter that life.I would certainly aim for 400bhp absolute TOPS if it was mine, and even then, if that is achieved at high boost pressures (due to a volumetrically inefficient engine), then you will still have trouble with it shitting itself...
Keep the boost below 2 bar and it should last okay
.
30-05-2007, 12:26 PM
#43
PassionFord Post Troll
Originally Posted by Dan@Rapid-Ford
Originally Posted by Franco
Originally Posted by Dan@Rapid-Ford
I thought the T38 was a step inbetween a T34 and a T4 
On the two vehicles i have fitted GT30s to i have run a seperate turbo cooling system with seperate rad, pump, piping and header tank. The pump is also set to run on a timer after the engine has stopped to deal with the heat soak from the turbine back to the bearing housing.
I have had no problems to date.
30-05-2007, 12:32 PM
#44
Originally Posted by Garage19
On the two vehicles i have fitted GT30s to i have run a seperate turbo cooling system with seperate rad, pump, piping and header tank. The pump is also set to run on a timer after the engine has stopped to deal with the heat soak from the turbine back to the bearing housing.
I have had no problems to date.
I have had no problems to date.
.
30-05-2007, 12:57 PM
#49
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Originally Posted by Mike Rainbird
Originally Posted by kjc300
GET A ROOM!!!!!!!!!! 
.I wish!!! lol
30-05-2007, 01:01 PM
#50
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Originally Posted by Mike Rainbird
Originally Posted by Garage19
On the two vehicles i have fitted GT30s to i have run a seperate turbo cooling system with seperate rad, pump, piping and header tank. The pump is also set to run on a timer after the engine has stopped to deal with the heat soak from the turbine back to the bearing housing.
I have had no problems to date.
I have had no problems to date.
.
30-05-2007, 01:20 PM
#51
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Thats not specifically for the turbo core....
Renault 19 16vs have that same feature. Probably to stop their heads and pissy wetliner blocks from twisting all over the place with heat soak.
Renault 19 16vs have that same feature. Probably to stop their heads and pissy wetliner blocks from twisting all over the place with heat soak.
30-05-2007, 01:37 PM
#52
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I do have a map .. but its of my T4... want it ?
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
30-05-2007, 01:52 PM
#54
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Originally Posted by turbinator
I do have a map .. but its of my T4... want it ?
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
Cheers for the thought though!
Doug & Mike.......................... What Kev said!!
30-05-2007, 01:59 PM
#55
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Originally Posted by Franco
Originally Posted by turbinator
I do have a map .. but its of my T4... want it ?
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
which connected to a standard engine spins up at only 4000..
but connected to a flowed engine with tubular manifold comes in action at only 2100 ...
Cheers for the thought though!
Doug & Mike.......................... What Kev said!!
30-05-2007, 03:15 PM
#57
Cheers Mike So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?
Sorry it's a bit off topic I know, just interested!
Ben
So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?Sorry it's a bit off topic I know, just interested!
Ben
30-05-2007, 04:07 PM
#58
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Originally Posted by Franco
Linky?
https://passionford.com/forum/viewtopic.php?t=62526
hires link to compressormap
Click here for hires picture
30-05-2007, 04:20 PM
#59
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Originally Posted by PF Ben
Cheers Mike So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?
Sorry it's a bit off topic I know, just interested!
Ben
So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?Sorry it's a bit off topic I know, just interested!
Ben
I thought I read here that you'd got a focus instead, then read in Retro ford that Project 78 was still on the go. I'm easily confused
30-05-2007, 04:34 PM
#60
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Originally Posted by turbinator
Originally Posted by Franco
Linky?
https://passionford.com/forum/viewtopic.php?t=62526
hires link to compressormap
Click here for hires picture
30-05-2007, 06:41 PM
#61
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Originally Posted by Rab
Originally Posted by PF Ben
Cheers Mike So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?
Sorry it's a bit off topic I know, just interested!
Ben
So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?Sorry it's a bit off topic I know, just interested!
Ben
I thought I read here that you'd got a focus instead, then read in Retro ford that Project 78 was still on the go. I'm easily confused
30-05-2007, 07:13 PM
#62
PassionFord Post Whore!!
My AET/DC Gt30 is good, 30psi by 4000 rpm and no surge.
try a "T" 34 with the GT roller bearing cores inside them they make very good power aswell performance ford did a test on them and they made a hell of alot of power over the t34.
As far as i could find out, The turbo in the test was a MD240r, so not really a roller bearing t34.
There was toooo many changes and unrecorded variables for that test to be accurate test.
Originally Posted by marco polo
try a "T" 34 with the GT roller bearing cores inside them they make very good power aswell performance ford did a test on them and they made a hell of alot of power over the t34.
As far as i could find out, The turbo in the test was a MD240r, so not really a roller bearing t34.
There was toooo many changes and unrecorded variables for that test to be accurate test.
31-05-2007, 08:35 AM
#63
Originally Posted by PF Ben
Cheers Mike So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?
Sorry it's a bit off topic I know, just interested!
Ben
So maybe with a tiny bit of head tidying and a different inlet cam a T34 .63 on an otherwise standard (7.5:1) engine would last a while at 400bhp running a bit less boost than you were?Sorry it's a bit off topic I know, just interested!
Ben
31-05-2007, 09:02 AM
#64
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Just to add another turbo into the fray............
What about a T4, what can be expected of this from say 4 greys?
Or are we talking lag city again......
What about a T4, what can be expected of this from say 4 greys?
Or are we talking lag city again......
31-05-2007, 09:15 AM
#65
Originally Posted by Franco
Just to add another turbo into the fray............
What about a T4, what can be expected of this from say 4 greys?
Or are we talking lag city again......
What about a T4, what can be expected of this from say 4 greys?
Or are we talking lag city again......
Fucking poxy goal-post movers - I bet Martin LOVES you
.
31-05-2007, 10:55 AM
#68
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Originally Posted by Jim Green
I'm sure Mike R has a map for Universal Turbo's version of their T38.... i seem to remember sending him it some time ago.
The lying little shitebag!!
Get it over Mike!!
31-05-2007, 11:16 AM
#69
PassionFord Post Troll
Check User Name : "Bud-Weis" and go to his PF Garage, it's my old Cossie and there is it's RR Print Out, which will give you an idea of where the turbo spools up, and a spec of the engine.
You could also do a search (Google etc) for "Universal Turbo's" ......they have a uk web site, and I'm sure they have a turbo map on there for their version of the T38.
You could also do a search (Google etc) for "Universal Turbo's" ......they have a uk web site, and I'm sure they have a turbo map on there for their version of the T38.
31-05-2007, 10:58 PM
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turbos
what is a true t34 turbo?, mine is supposed to be a t34, it has a .60 front housing and a cossie .48 exhaust housing. im finding on my car that the spool up is awesome, if not a little too quick. jaycos and gareth-t have been mapping my car and we are getting good results so far. but im looking to try and get 320-340bhp out of it. is my current turbo set-up ok or do i need to change? someone suggested to me getting a .55 exhaust housing? any suggestions are welcome. i know its not a cossie, but slowly its getting a lot of ford parts. lol.
01-06-2007, 10:30 AM
#75
Re: turbos
Originally Posted by craig21t
what is a true t34 turbo?, mine is supposed to be a t34, it has a .60 front housing and a cossie .48 exhaust housing. im finding on my car that the spool up is awesome, if not a little too quick. jaycos and gareth-t have been mapping my car and we are getting good results so far. but im looking to try and get 320-340bhp out of it. is my current turbo set-up ok or do i need to change? someone suggested to me getting a .55 exhaust housing? any suggestions are welcome. i know its not a cossie, but slowly its getting a lot of ford parts. lol.
You have a hybrid "T34", which uses the later spec Sapphire 4x4 turbine with the compressor from the Escort Cosworth. It is a FANTASTIC turbo for the power level you want (great spool up and minimal lag). Keep it!
Ben,
Never heard of a 0.57 a/r turbine, so probably a a hydbrid of various trims made by who-ever? Will sit somewhere between a 0.48 and 0.63 turbine in terms of spool-up and lag. The normal one is a 0.55, but these wnet through a phase of unobtainability, so someone probably cobbled something together to be a similar half way house. For a fast road Cossie, a 048 a/r T34 is still hard to beat as good all round reliable set-up
.
01-06-2007, 11:41 AM
#76
I've got a GT28 on my escos specced and built by Harvey and she runs 403BHP but doesn't pull like a normal turbo, more like having a powerful V8 as it has no turbo surge which I miss
I am thinking about taking it off and having it modded to fit my FRS and then fitting a T38 or an internally gated GT30 for more power. What do ya reckon would be the better way to go?
I am thinking about taking it off and having it modded to fit my FRS and then fitting a T38 or an internally gated GT30 for more power. What do ya reckon would be the better way to go?
