GT30 Spec Engines
#1
GT30 Spec Engines
What is the ideal spec for a GT30 engine?
(as the 500bhp thread in the Tech Essay section explains C/R in detail is it better to use pocketed standard piston over a lowered compression piston?)
What i would also like to know is what spec Camshaft and configuration were people advised to work perfectly for the GT30 turbo?
- Block
- Pistons
- C/R
- Cams
(as the 500bhp thread in the Tech Essay section explains C/R in detail is it better to use pocketed standard piston over a lowered compression piston?)
What i would also like to know is what spec Camshaft and configuration were people advised to work perfectly for the GT30 turbo?
#2
GT30
Think Mark Shead at madevelopments has done std comp,gt30 conversions with autronic and vipec to good affect.
Best to get advice from someone who has actually done it correctly and to good affect enabling you to save money in the long run.
Think his 500/500 conversions are based on the above
Best to get advice from someone who has actually done it correctly and to good affect enabling you to save money in the long run.
Think his 500/500 conversions are based on the above
#4
10K+ Poster!!
iTrader: (21)
My spec, but for a 3071
200 block - 6 long studs
Custom CP Pistons to Mark's spec
8:1
Slightly ported head
Double valve springs
Mark's inlet cam, std exhaust cam
Can sun std inlet with spacer but i'm looking at a hart inlet (group buy coming soon)
Think that's about it but probably missed a few bits...
200 block - 6 long studs
Custom CP Pistons to Mark's spec
8:1
Slightly ported head
Double valve springs
Mark's inlet cam, std exhaust cam
Can sun std inlet with spacer but i'm looking at a hart inlet (group buy coming soon)
Think that's about it but probably missed a few bits...
#6
I have a worked on head 25/26 ports and polished - inlet is a 4x4 with a Reyland 17.6mm spacer which throws loads of air in.
I have read that EP have one about to tested that is due to match the MAD item so i might give that a go.
But what do people think about C/R?????
I have read that EP have one about to tested that is due to match the MAD item so i might give that a go.
But what do people think about C/R?????
Last edited by BRAMMER; 07-08-2010 at 12:08 PM.
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#8
PassionFord Post Whore!!
I wouldn't go as low as 7.2 on Cr, I think 99% of tuners try and stay around 8-1 now.
Gone are the old days of having to run low comp for big boost safety.
And judging by Cossie richs gains when he used a mad inlet over a bd14 I would go with that,
And definitely a hart inlet, not only does it increase flow and allow more power but it give a more even distribution of air across all 4 cylinders.
Gone are the old days of having to run low comp for big boost safety.
And judging by Cossie richs gains when he used a mad inlet over a bd14 I would go with that,
And definitely a hart inlet, not only does it increase flow and allow more power but it give a more even distribution of air across all 4 cylinders.
#9
PassionFord Post Troll
iTrader: (11)
protect
I agree with Stu above,in the old days lower comp was favoured,nowadays most tuners will tell you to stay around standard comp with valve cut outs(depending on cam choice of course).
Chris speak to your chosen tuner m8,they should give u the info u require.
Thanks.Lee.
Chris speak to your chosen tuner m8,they should give u the info u require.
Thanks.Lee.
#13
Will also book with harvey to do back to back on hes dyno even though its the same as harveys just to shut the doubters up....
Iv already seen 452hp and 440lb ft on my cam and that was at a 2 bar peak 1.9 bar held engine with very similar spec as above so it deffo works...
As for cr brammer just go cosworth or cp with std crown and then get cut outs machined and with a good deck head you will be circa 7.7-7.8cr wich will be spot on..
Any info or help and all you have to do is ask mate...
cheers danny
#15
#16
PassionFord Post Whore!!
not true, i rang him for a price and told him what i had in the engine, he said i could buy and fit it but he wanted to time it and it would need a live map, preferably by himself ofcourse.
if danny offers a good substitue then no reason not to buy from him instead.
#18
PassionFord Post Whore!!
Mark
#21
cheers danny
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