Website says 2.1 for the ams car and Dan has said he uses the 2.1 even though the site states 2.3

 

did cp make your pistons with a pin offset or are they centered as cp usually makes pistons?

I have been considering a 2.5 for a while. I am looking forward to seeing your results.

 

Whats max revvs? 6800rpm?

 

i think dan has upgrader to the 2.1l and a 42r turbo

 

Mike props on the setup..


I was impressed with the SBR stroker setup.. 2,000 miles of pure hell on mine and no troubles.

 

It is probably gonna be in the range of 9000 rpm or something, it is not 2.4 it is only 2.1 so it is destroked. More than likely the car will be on race gas so the 10:25 compression will be fine, engine management works miracles with the right tuner. Hondas do it all the time with that compression.

 

disregard the destroke and rpm part of my post, I thought it was 2.1 lol but now I see it is 2.5

 

Nice. Reminds me of my old 10.0:1 2.5L GSX in the days of old (3 years ago). Nothing sounds as nice a high compression turbo car. At the present, we are working on a 383 cubic inch 10.5:1 twin turbo setup for a friend.

jeff

 

Boost is typically set at 22 for the low setting, and 28 PSI on the high setting.

Gas is 104 Sunoco unleaded, which provides us with a slightly larger tuning window.

Mike Huml
SBR Inc.

 

That motor should have great throttle response, and lots of low/mid range torque. Nice!

 

No offset, you are correct!

I too am looking forward to putting the car on the dyno late next week!

Mike Huml
SBR Inc.

 

ok, so theres not a 93 octane tune in mind then?

i guess my question was geared more towards the range of 93 octane....like for our car stock you can run 22 psi with out much trouble. i would think that if i took my car and swapped my stock compression pistons for 10.25 i would think it would knock too much at 22 psi so i would have to lower that to lets say 18 psi, but i would get more power at less boost on 93 octane.

sounds like a sick setup though

 

This setup with the higher compression probably gives a smoother transition on spoolup and much better recovery if it ever does get out of boost during a race...hmmm that would suck

 

I will be running a 10:1 2.1l in my daily IX soon enough, so I will report back on the 93 octane and high compression, but it does not scare me.

As well, you would not want a 10.25:1 compression 2.0l piston, it would have a dome on it however a 2.3l, 2.4l, 2.5l still has a dish at this compression ratio.

Mike Huml
SBR Inc.

 

Motor going in car now, should be on the dyno tomorrow or Wednesday at the latest, will post reults.

Mike Huml
SBR Inc.