Best Bore for Boost?

[AlphaWolf1993]

I'm currently building a high hp ls/vtec. I'm planning to send the block out to get sleeved with Benson Sleeves and they will bore the cylinders for me as well. My question is, should I keep the 1.8l displacement or would it be worth it to bore it to a 2.0L for the extra torque? Will it weaken the sleeves at all if I bore it larger? I plan to boost starting at about 400hp and later push it up to, and beyond, 600hp...

 

[DaddyBuiltRacing]

I have Benson sleeves and if I could do it again I would've stayed 81mm, here is why: It allows you to rebuild the motor should and once it blows up. At 84mm you are really limited on the ammount of rebuilds you have left, 84.5 is probablly the most I would go on a boosted motor, so you figure at 84mm and blowing it up you have 1 rebuild left. At 81mm you have a whole lot more left.

 

[Spawne32]

there is no "best bore" for boost

 

[AlphaWolf1993]

So torque increase vs. rebuild life, 81mm is the smarter route.