My z28 got beaten by a Gs-t :'(
05-26-2007, 02:36 PM
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Originally Posted by 10secclub
not trying to be mean but there is no way someone can run 20 psi on 91 with out detonating out the *** on a 16g unless using some form of water methanol injection because i have a big 16g on my dd
05-26-2007, 02:40 PM
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Originally Posted by 10secclub
not trying to be mean but there is no way someone can run 20 psi on 91 with out detonating out the *** on a 16g unless using some form of water methanol injection because i have a big 16g on my dd
05-26-2007, 02:49 PM
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Thats sort of a misnomer. It is technically a 16G even today. But its got a totally different turbine housing thats worlds better than what DSMs got. The matirials are better and I'm pretty sure the compressor and turbine wheels are different too. Similar design, probably similar efficiencies at various pressure ratios, but the new units flow a lot more.
Having said that, those turbos on a higher compression Evo will run at 19PSI on 91 no problem. It has a lot to do with a much more sensible timing curve and better intercooling than anything else. Try running 20PSI from a Big 16G or Evo3 16G on a stock timing map stock IC 1G and it will detonate really bad. Put in a decent IC (I run a stock IC from a MKIV Supra, awesome little unit actually) and pull some of the timing and your in business. IIRC stock 1G timing maps try for like 24 degrees of advance at about 7K RPM. Way too aggressive. Only reason they could do that was the low 7.8:1 compression. 2Gs run at 8.5:1 and so they got a much smarter and smoother map.
I dont want to hijack this though. If anyone wants more info just PM me.
Having said that, those turbos on a higher compression Evo will run at 19PSI on 91 no problem. It has a lot to do with a much more sensible timing curve and better intercooling than anything else. Try running 20PSI from a Big 16G or Evo3 16G on a stock timing map stock IC 1G and it will detonate really bad. Put in a decent IC (I run a stock IC from a MKIV Supra, awesome little unit actually) and pull some of the timing and your in business. IIRC stock 1G timing maps try for like 24 degrees of advance at about 7K RPM. Way too aggressive. Only reason they could do that was the low 7.8:1 compression. 2Gs run at 8.5:1 and so they got a much smarter and smoother map.
I dont want to hijack this though. If anyone wants more info just PM me.
05-27-2007, 01:35 AM
#44
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Originally Posted by Sparetire
Thats sort of a misnomer. It is technically a 16G even today. But its got a totally different turbine housing thats worlds better than what DSMs got. The matirials are better and I'm pretty sure the compressor and turbine wheels are different too. Similar design, probably similar efficiencies at various pressure ratios, but the new units flow a lot more.
Having said that, those turbos on a higher compression Evo will run at 19PSI on 91 no problem. It has a lot to do with a much more sensible timing curve and better intercooling than anything else. Try running 20PSI from a Big 16G or Evo3 16G on a stock timing map stock IC 1G and it will detonate really bad. Put in a decent IC (I run a stock IC from a MKIV Supra, awesome little unit actually) and pull some of the timing and your in business. IIRC stock 1G timing maps try for like 24 degrees of advance at about 7K RPM. Way too aggressive. Only reason they could do that was the low 7.8:1 compression. 2Gs run at 8.5:1 and so they got a much smarter and smoother map.
I dont want to hijack this though. If anyone wants more info just PM me.
Having said that, those turbos on a higher compression Evo will run at 19PSI on 91 no problem. It has a lot to do with a much more sensible timing curve and better intercooling than anything else. Try running 20PSI from a Big 16G or Evo3 16G on a stock timing map stock IC 1G and it will detonate really bad. Put in a decent IC (I run a stock IC from a MKIV Supra, awesome little unit actually) and pull some of the timing and your in business. IIRC stock 1G timing maps try for like 24 degrees of advance at about 7K RPM. Way too aggressive. Only reason they could do that was the low 7.8:1 compression. 2Gs run at 8.5:1 and so they got a much smarter and smoother map.
I dont want to hijack this though. If anyone wants more info just PM me.
Last edited by BoOsTeDeAgLe; 05-27-2007 at 03:35 PM.
05-27-2007, 12:37 PM
#45
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Originally Posted by 10secclub
not trying to be mean but there is no way someone can run 20 psi on 91 with out detonating out the *** on a 16g unless using some form of water methanol injection because i have a big 16g on my dd
05-28-2007, 10:45 PM
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That's about right.
My friends 2g FWD about 3-4 years ago dynoed 280whp, not sure what type of dyno and he ran a best of 12.5 @ 110mph on drag radials at that power level. That was on a big 16G too.
Also, the FWD's have exceptionally good gearing for running on the highway. They can do 120mph in third gear on a 5 spd. Also, FWDs are more or so in the 2,800lb range. So you have an easy 500-600lb weight handicap while he's making just slightly less power than you are. You just need to add mods.
My friends 2g FWD about 3-4 years ago dynoed 280whp, not sure what type of dyno and he ran a best of 12.5 @ 110mph on drag radials at that power level. That was on a big 16G too.
Also, the FWD's have exceptionally good gearing for running on the highway. They can do 120mph in third gear on a 5 spd. Also, FWDs are more or so in the 2,800lb range. So you have an easy 500-600lb weight handicap while he's making just slightly less power than you are. You just need to add mods.
05-29-2007, 09:28 AM
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start with the driver mod and race again
it took me about 3 and a half weeks before I felt comfortable enough to drive the car the way I should have been
it took me about 3 and a half weeks before I felt comfortable enough to drive the car the way I should have been
