h22/h23 turbocharging question...

[K_millar]

Just put a Mazda 13B in your Accord..

[1320B4U]

If you call or email companys that build pistons/rods, im sure they have them off the shelf for an H23 with different overbores.

" also, why exactly is the h22a 40 HP more than the h23a. is it because of the higher redline and vtec? also, how much would a computer like hondata raise redline? i can probably live without vtec since i'll have a turbo, but a 6500 redline is too similar to the accord i already have! lol. "

Its basically the higher comp. ratio and VTEC. Think of an old muscle car with real lumpy cams, horrid idle and my guess gas mileage. When the H22 switches over to VTEC at around 5k, thats what happens of course. So thats where the extra 30-40 HP come from.

"so either way, according to you, it would just as expensive for either one... but at least with the H22, you start off with 200hp instead of 160hp. 40 more hp towards a goal of 300 sounds like a deal to me."

Expensive for both yes. So why not start with a $400 H23 rather than pay $1,000+ for an H22 and disable VTEC(there goes that extra 40HP) when your boosting 20+psi? That extra $600 is a set of nice forged pistons or rods. Or a wastegate and turbo mani. Or some injectors and intake mani. Most people work on a budget.

"w/forged rods, pistons, 450CC injectors, fuel pump, ignition, and proper management, around how much boost is possible? is there anything that i didn't add that would be creating a bottleneck for more boost?"

Well, with 2.3L and 18-20psi on the street, you might need 550's, shit maybe even 660's depending on what turbo you choose. If your aiming to be a street terror you'll want fast spool and decent top end. I have a Big16g on my 2.0L, full spool(18psi street) at 3200rpm revving out to 7200. But I can still hit 12's at the track. With 2.3L you'll spool a turbo larger than mine quicker, but then again your FWD so thats not always a good thing on street tires. But if you went with a beastly large turbo(50-60 trim, 700+CubicFeetMinute) you would kill just about anything from about 40mph-up to top end 150mph+(where traction isn't much of an issue). Bottlenecks, lots of fuel, huge intercooler(Spearco 216), nothing but 93+ octane, maybe a ported head, bigger throttle body, intake mani or extrude hone the stocker, High Rev Kit(springs, retainers, SS valves, turbo cams) if you want to rev to 7500rpm or so with all that top end boost.