Im looking to go as high as i can go with pump gas. The bottom end is a b18b1 out of a 97 integra and the head is a jdm b16 head with a skunk 2 im and 70 mm throttle body. My question is what compression do you guys think i should go ?What brand pistons and rods are good. I have a gt35r turbo. And i topmount manifold with a 3 inch downpipe. Should i sleeve the motor?

 

If you want as much power as possible on pump gas, do NOT go crazy with the compression. Keep it pretty low.
On pump, say you want around 500whp...for that sleeves are not necessary. But it's up to you for extra insurance, and the possibility of making more power in the future.

 

sleeving the motor (for me) is a 2500.00 question....

My current and next motor are stock sleeve/wiseco/eagle/arp....

 

Think long term. If you sleeve it you have no limits for the future. If your goal is reachable on stock sleeves, then your good to go. 9.5:1 is good.

 

Should i leave it stock bore size or should i bore it out +.20" or .40" over keep in mind it will probably be sleeving it since my buddy does it and will be giving me a really good price. If not should i stick to the stock bore? As for the head should i leave it stock since its a jdm b16 head the guy im buying it off of says itll spin till 9500 rpms. Is 9.0:1 good i couldnt find 9.5:1

 

anyone?

 

im guessing no more advice

 

im running an lsv 9.5:1 cp pistons(coated tops & skirts), crower rods, stock sleeves w/golden eagle block guard. Made 550 on the old setup with gt35r. New setup had some issues and is currently at 470@18psi

 

the bore can be what you want. I bought a set of 84mm aries pistons cheap so thats what I bored it to. Just remember there is no replacement for displacement.

 

I think what you meant was .020", not .2".

.020" = .5mm

So overboring
+.020" = 81.5mm
+.040" = 82.0mm

9.0:1 compression is fine, you won't want to go much lower than that though.

JDM B16 heads will not rev to 9500 unless he's done valvetrain upgrades. Just becuase it's "JDM" doesn't mean it'll do special magic tricks.

I'm running CP 81.5mm 9.0:1 pistons in my b16 block with gsr head. small top mounted turbo spools in at 2500 and peaks out at 300+ at ~1BAR. .053" cometic hg lowers the compression slightly.