jmh4bb6

How well do you experienced guys think an h23a will handle a low boost setup? Ive been all motor for about a year now and interested in trying something different. Motor has just over 50000 miles and is bone stock, everything feels strong and doesn't smoke. Any advice is appreciated!

Freemananana

iTrader: (3)

I've heard 260 to 280 is the safe limit. That's just rumor. I've seen a couple 250 whp H23 swaps.

motoxxxman

250whp will hold for quite a while, 260+ gets a little iffy.
if your engine really does have only 50k miles on it, it should be more than good for a 6-8psi setup

justYncredible

iTrader: (1)

this statement right here is invalid. you can not, i repeat, can not judge power by psi

Freemananana

iTrader: (3)

Agreed. I guess the 260-280 was a little generous. 250 is a good stopping point.

motoxxxman

partially true. if you know the engine is bone stock, then you know what compression is, and power per psi is a little easier to guess. I've boosted stock h23's with log mani's, tubular mani's, large t3's, small t3/t4's, and larger t3/t4's and have seen the power outputs of them all, which is how I felt comfortable saying 6-8psi is fine on a stock h23. yes power was different with each, but peak torque was very similar with all of them when running equal boost pressures