Just to clear this up - Car: 01 Integra GS-R

How much boost can i effectively run on 10:1 compression with Weisco pistons, Eagle H Beam rods, and no block guard or sleeves? I plan on having it tuned with Chrome, or Hondata s300. whichever the tuner is better with. Im buying my parts and im not sure which CR to get. Im deffinately getting weisco pistons, but im unsure of going 9:1 or 10:1. My end goals are between 300 - 400 whp on a daily driver. Ive read that people are producing up to 400 on 10:1 CR with proper tuning and cam gears, but its safer to run 9:1. If I can run 10:1 with less boost, i'd rather go this route. Thanks in advance...

 

You can get 400 whp out of it with good tuning.

I would look into a lower compression piston though. 9-9.5:1 seems to be the popular choice...10:1 is too high for a big boosted motor running pump gas on stock sleeves.

 

Only problem is that all im finding from Wiseco are 8.6:1 or 9.7:1 with an un-cut head. I can reach 8.9:1 by milling. I guess my question, is there any other way to make this compromise without milling the head, using one of theese two CR pistons? Mabye a thinner head gasket?

 

Use endyne pistons they are made by wiseco if you are dead set on that route.

Personally I would use CP pistons but that is me.

My car with Endyne pistons and eagle rods made 401whp 260wtq on pump gas at 14psi. I at about 8.8:1 compression since my pistons were for a GSR and I have my stock ITR head.

 

Weisco isn't the only company out there that makes forged pistons for Honda motors. If they don't offer the compression ratio that you are interested in, see if another maker has it.

 

Why do you like CP pistons better? I'm just going by my hours and hours of research. Im not dead set on any route, i'm just trying to do it right the first time. I know i want a strong bottom end. The only thing i don't want to do right now is have the block sleeved, or modify the water jackets in any way. So anything that will not jeapordize my block, im considering. After everythings back together and working, i'll work on the head. Reliability is key though... Thanks

 

CP's just seem the nicest with the lateral gas ports and ability to hold loads of power.

if you are goin so far as to have the head worked you should sleeve the bottom end. in fact just have the bottom end sleeved with the cash you would use on the head. if you get bad gas, hot day, etc and it detonateds the stock sleeves will crack