92civicb18b1
The Trisexual
Originally posted by hondarin+May 9 2005, 11:41 PM-->pissedoffsol@Apr 12 2005, 02:16 PM
you can boost 300-ish on stock sleeves, about 250 on stock pistsons/rods safely on most b-series motors in good shape and TUNED PROPERLY with an electronic fuel management unit like hondata/uberdata/etc
however, you're never going to com close to 300 on 7 psi. lol
i hit 290-ish on 11 psi on a sleeved 2.0 gsr motor with a t67 turbo.
[post=486220]Quoted post[/post]
if you hit only 290 on a sleeved 2.0gsr with a t67 pushin 11 psi, then, i would imagine that you were running lower compression pistons; but why sleeve it if you're gonna run lower compression pistons? were the pistons a lower cr? or, possibly whoever built your engine didn't do a very good job (and no offense if it was you). also, what elevation are you at?
i refer you to hondata's dyno page: http://www.hondata.com/dynocharts.html
i dunno, maybe these cars are special cases.
also, you're always saying that head work "isn't necessary," but when you get right down to it, a good PnP is always gonna help you breathe better.
and lastly, everybody always suggests full 3" exhaust, and at 250 or even 300hp, you don't need 3" exhaust. i'm sure a 2.75" or maybe even 2.5" exhaust at those power levels would have far greater exhaust velocity (in a mandrel bent system, of course. if you're using crush bending, then i suppose 3" would be needed.) if you're exhaust is too big, you will lose power, both in the bottom end and top end.
finally, i don't mean to offend you by any of my comments, just my opinions based on my education thus far in my mechanical engineering degree, and from what i've read.
[post=497233]Quoted post[/post]
his shit was fucked...and he was lookign for more than 300 hp i think
sleeving is added protection, anything over 300 I would defenitly sleeve my motor.
Lower CR makes it easier to tune....Sleeves make it stronger
PnP will always help...but you can skip it with a vtec head since they flow nicely and will still make some nice power...of course there's more to be had with a PnP though...it just isn't neccasary. On an LS I would always suggest a PnP due to the crappy head.
On a turbo motor, the exhaust NEEDS to breathe as much as possible. the bigger the better...3" is ideal for most setups. 2.5" is restrictive. I was running open DP, then finally put my 2.5" exhuast on and well there was defenitly a huge loss in power.
2.5" DP and exhaust to 3" will make a very noticeable gain as well as quicker spool times.