Black R

itr in question has 80k miles on it. ringlands broke on cyl #2 and #3 after 2000 miles with the vortech blower.

cylinder walls look excellent. head is perfect.

I'm trying to decide what to do for the rebuild.

option #1: buy new set of stock pistons, new rod bearings, remove blower, and roll out.

option #2: buy forged pistons and rods, new rod bearings, keep blower, and tune.

option #3: ???

Now what pistons should I look into since we're leaving the bottom end in the car and will do a simple re-hone? Is there a forged piston that won't scar the cylinder walls when cold due to different expansion properties than stock? Perhaps a forged piston with high silicone content?

And finally, what c/r should I shoot for? I don't anticipate anything much over 12psi, and was thinking a flat top 11:1 c/r piston would be very nice.

Of course this is fully tuned with hondata s200b, and we have the option of uberdata as well.....

Thoughts?

done

10.5 CR

buy some pistons and rods. and roll out

scooter

I would not go that high on compression if its your daily driver. Yes, it will make more power and be a little more responsive but keeping detonation away will be very difficult. I would go with 9.8:1 or 10:1 pistons. When I was supercharged I got the Endyn 10:1 pistons and it was great. If you do go with 11:1 then I would invest in a J&S safegard just to keep things in check when your not paying attention.

scott

Black R

.....Scott, I don't see a 10:1 piston on the endyne site (81mm bore):

http://www.theoldone.com/components/pistons/

I see them in 8.90-9.28:1.....

What is the recommended piston in cylinder clearance for these?

They're pricey too: $485.00 per set plus rings ($78.00).