boosted99_420
10+ Year Contributor
- 308
- 1
- Apr 26, 2010
-
Fort Carson,
Colorado
What rods are you using is another question. The 420a rods are pretty weak and with high compression its gonna make power very easily but also starin the rods more.
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What rods are you using is another question. The 420a rods are pretty weak and with high compression its gonna make power very easily but also starin the rods more.
If the OP has 10.5:1 pistons then he has aftermarket rods. You dont want to hang Wiseco or JE full floating pistons on a press fit rod.
OP like I posted before and a few others have touched on look into a water/meth system it will benefit you now being N/A with the correct nozzle and a quick nozzle change when you go turbo. This will give you some more 'wiggle room' in your tune.
When I got turbo I plan to run one nozzle pre turbo the one nozzle pre throttle body/ post Intercooler.
Take a look at Devils own methanol they have a lot of info on their site.
now i think about it im not sure there is methanol in my town only e85?
IMO, go with a middle ground of 9.x:1. Still higher CR then typical setups, but you still have a little bit wider of a window. I have to agree the 20G is an excellent turbo. But alot is in the tune as well, if you lean out the low boost, you can get spool to higher boost quicker, theres always tricks (regardless of CR). I dont disagree that High CR + boost is more effiecent, the motor works more. I would say a mid CR engien will get a little of the Pros from both sides. Hell 300 on a 8.5:1 motor isnt really that hard either..yes it takes more, but in the large scheme, not that much more. If your dead set on runing the 10.5, then go with a 16 or 20g as you wont be using the high boost areas of that turbo anyway. Hope you can tune
If your town has E85 then run that. Amazing stuff!
It will give you a much better margin to tune with.
E85 and 20g or HX35 gets my vote!
Something with a larger turbine wheel or higher a/r number on the turbine housing to deal with the additional amount of exhaust energy. A small turbine or small a/r housing will funnel the exhaust energy into too small of a space, raising backpressure and EGT's which are NOT what you'll want to be dealing with on a high-compression application.I have a built motor 10.5 compression, crower 2 camshafts and im wondering what would be the best turbo to run on that? Im right around 190 hp now and I only want around 300hp. Any suggestions would be great or personal experience with this topic. Thanks