Originally Posted by
bubbrubb
Losiglow LOL. Yeah i actually think imma ask her to marry me this friday (has nothing to do with the turbo, purely coinsidental)
t3t4delsol. My engine is a f23, i plan on running 20-30psi of boost and im going with a full 3" exhaust and 3" downpipe. Im not sure what kind of rpm range im going to have after my car is built (new valve train/ titanium retainers) and im pretty sure its going to be over 7200 rpms, but if its in the 8000 range ill probably go with the 3076 with the 1.06 housing.
Edit: Ive talked to a few people and all of them say that Garrett under-rates their turbos. People have seen over 440whp on the GT3071R's, but i still dont know if i want to go with that just yet.
8000rpm range is going to be tough. The F-series lacks the oil lubrication system found in the sump of the H-series block.
Plus the main caps are just not as beefy as the H-series. The piston head speed is going to be an issue. I think I recall sometime back a guy out in AZ was building long stroke H-series motors for Accords.
I think his post sig was 2point6. He even scaled back for a time to 2.4l strokes on his H-blocks.
The Accord F23 isn't really 2.3l, it's a lot closer to 2250cc but Honda took the liberty of rounding up for the marketing. If you want higher RPM's a smaller crank stroke would likely be advisable. As is, the larger displacement should allow for a better spool anyhow so you shouldn't need the rpm's for power.
Sizing the turbo is the more important criteria. I've never been a fan of the T3/04 hybrid turbo for the Honda applications-it's far too peaky. The Saab's of similiar displacement like the performance Viggen used a turbo more inline with a straight T3, which allows for better power in the low end and mid range. This is more ideal for the conditions street cars see. Volvo's even used a T25 like turbo, which isn't very flashy but you'd be in the turbo spool range 3/4 of the time. Peak power won't be that high, but you'll be in the meat of the power band all the time.