high comp.turbo

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high comp.turbo

By F20bhatch
- Mon Jul 18, 2011 6:46 am #263973 Just thinking out loud. Want to do a high compression Turbo build. Check this, 11.1 comp. I beam rods. Forged pistons.hondata s300.f22 transmission. Sounds like a beast huh? Any comments welcome?
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Re: high comp.turbo

By kingjmack
- Mon Jul 18, 2011 7:30 am #263975
F20bhatch wrote:Just thinking out loud. Want to do a high compression Turbo build. Check this, 11.1 comp. I beam rods. Forged pistons.hondata s300.f22 transmission. Sounds like a beast huh? Any comments welcome?


That's a higher than normal comp number, but with the proper tuning, you should have NO problem with it. good luck!

By F20bhatch
- Mon Jul 18, 2011 12:48 pm #263994 Yeah I know everrybody lower the compression. And run like 15-20 psi.but.y not up the compression and run less boost. So u can run a small Turbo.and it will spool quicker. And make good number with less boost
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By forcefedEG
- Mon Jul 18, 2011 5:04 pm #264023 10:1 with full sleeves is a sweet spot :thumb:


Your on the right track imo. That's kinda what I'm looking to do down the road

By EJ1_MK
- Mon Jul 18, 2011 11:51 pm #264079 Most major drag racers run high compression high boost you should be fine as long as you have all the supporting mods, fuel, tuning, etc.

Local shop in KC here runs close to 265 psi per cylinder under a compression test plus a high amount of boost which makes the B series right around 900 + wheel horsepower and running 9s at the track.

Fact stock Type R compression test should read 215-225 psi per cylinder Which is an 11:1 compression engine.

By F20bhatch
- Tue Jul 19, 2011 1:17 am #264096 I just think it'll be better on the Turbo and other parts to running 5 psi. Compared to running 30 psi if I can make the same power.

By EJ1_MK
- Tue Jul 19, 2011 3:41 am #264126 If you build it and its flows good then you can run 5 and make the same amount as the guy that is built with a lower compression running higher boost and then if you feel the need to turn the boost up you can and make a lot more power. but yes you are correct the better the engine flows the easier it will be to make power on less boost.
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By forcefedEG
- Tue Jul 19, 2011 12:50 pm #264150 Cfm> Psi

Cfm makes power

Psi breaks stuff

By F20bhatch
- Tue Jul 19, 2011 5:02 pm #264174 So a bigger Turbo running small boost is better than a small Turbo running a lot of boost.?
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By poorman type-r
- Tue Jul 19, 2011 8:20 pm #264184 Well it would be pointless to run a high comp w/ a small turbo. It would be a sick build, yes. As for power i don't think you will see the results you want. Might as well supercharge it.
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By forcefedEG
- Wed Jul 20, 2011 3:57 pm #264262 The more cfm.(cubic feet per min) you can flow and less psi (pounds per square inch) you need to run to flow that cfm the better off you are


Example. 3500cfm at 10psi. Or. 2500 cfm at 10psi.

You will get more power from the first one and be less stress on components
because your flowing more volume on less pressure

But you really want higher compression with a good flowing turbo but still sized right to your application

By F20bhatch
- Fri Jul 22, 2011 3:52 pm #264490 So Wat would be a nice size for a stock f20b at 11.1 compression. I want around 300whp reliable. And ill be happy for now
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