bore increase

[bowflex]

I was wondering what people thought my hp increase would be if I increased my bore from 86mm to 87.5? Then how much more if I increased to a 2.2L with a new crank and new pistons?

[GSXRJJordan]

You'll need to sleeve the block - most SR's don't overbore nearly that much because the cylinders are already so close together. The 2.2L stroker kit from Tomei uses stock bore, Brian Crower 2.35L bores to 87mm I believe. They're all very expensive, and not neccessary - if you need more than 400whp or so, it's actually cheaper to buy a more expensive/bigger engine (RB25, 2JZ or LSx) and star there.

[Bahdra]

if you want to up size your pistons find some used 300zx tt pistons get some hks 87 mm iron sleeves and upsized SR20det piston rings from tomei or any "good maker" will work in the 300zx pistonsand same pins as the sr as well probally 700~800 i guess depends on where you find the pistons buddy engine pushes 550 and she is nasty

[bardabe]

hit up John Griff or Steve Shadows, john had an SR20 with an 89mm bore. stock stroke. insane set up.