I was wondering if anyone has built an f22/f23 and reved it to 9k with power. I know our R/S ratio sucks for this but I'm just curious if any turbo or NA guys out there has done this.

 

no...turbo you wouldn't really want to. NA I guess after a very long build w/lots of money involved. If you are just wanting a high redline get a f20 or h22 and put in some high compression pistons and build it

 

<FONT COLOR="royalblue"> Never Happen..</FONT>

 

There are plenty of turbo guys on H-T reving to 9k but not on an F series motor. But I guess the F motors get no love. I personally would love to rev my turbo F23 to 9k but it's time to move on to a different project car.

 

You have to look at the design of those engines...b series are WAY different than f series

 

Yes, they are totally different actually. But it's the R/S ratio that is holding us back. I just wanted to know if anyone has tried it and was successful.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stinker504 &raquo;</TD></TR><TR><TD CLASS="quote">There are plenty of turbo guys on H-T reving to 9k but not on an F series motor. But I guess the F motors get no love. I personally would love to rev my turbo F23 to 9k but it's time to move on to a different project car.</TD></TR></TABLE>

<FONT COLOR="royalblue">If you have to rev to 9k to make power than I would not consider that a very efficient turbo. Plus w/ a stroke that big you don't need to rev that high to make power. Honda does shyt like this for a reason, they not as crazy as we think. Also, not many B series owners make power @ 9k. </FONT>

 

try lighter pistons and shorter stroke if you want high rev.

 

If longevity isn't a factor, go ahead and do it...but it won't last...

It's not that there's "no love" for the engine, it's just it isn't feasible.

Why do you want to rev that high anyways? Is that the cool thing to do now?

 

Dude, forget about revving to 9k. Not worth it.

If you're looking for more power, search for Turbowa's archived thread with pics of his car. His name is Clint, and he is friends with Paul from Honduh.

His car is sick. Boosted auto 6th Gen running 15psi, and N2O, race ready. Of course, the engine blew when he pushed it past 15psi, but surprisingly, the tranny outlasted the motor.

 

of course you can rev it to 9000rpm with an F series

i think it's called S2000

 

the funny thing is that piston speed in an f22(a or b) at 7200 rpm's exceeded piston speed in an f20c at 8700 i think it was...i remember doing all that math a long time ago...just an interesting fact to know...if i remember correctly, the f20c and the f22(a's and b's) had matching piston speeds at around 9650 and 7200 rpm's respectively...that should give you an idea of why not to rev your f22 to 7200 rpm's....

but to answer the question, in order to realistically do this, you would have to obviously destroke the motor quite a bit...at least down to 2.0 liters, if not less...also, the sohc design isn't made for revvability...the intake and exhaust side are all put on one stick, so tuning them seperately would be a major issue (which you would need to do at 9000 rpm's)...

 

with a different camshaft, valve springs, stronger rods and pistons....why wouldn't it be possible? IMO......9,000rpms is sick, i was thinking maybe push it to 7,500rpms with a good custom camshaft and a built engine. it is the rods that hold us back, but more so the head. stronger rods can handle the extra stress. there are a few SOHC's running some high rpms, but they also did major work, and these are the NA drag SOHCs with record breaking times. rods, pistons, valve springs, and camshaft should get u most of the way, but 9,000rpms is sick in the head

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b_ron007 &raquo;</TD></TR><TR><TD CLASS="quote">with a different camshaft, valve springs, stronger rods and pistons....why wouldn't it be possible? IMO......9,000rpms is sick, i was thinking maybe push it to 7,500rpms with a good custom camshaft and a built engine. it is the rods that hold us back, but more so the head. stronger rods can handle the extra stress. there are a few SOHC's running some high rpms, but they also did major work, and these are the NA drag SOHCs with record breaking times. rods, pistons, valve springs, and camshaft should get u most of the way, but 9,000rpms is sick in the head </TD></TR></TABLE>

the bad r/s ratio will catch up with you.


Yeah, it's so sick...it's so sick getting passed up because you want to rev to 9k. It's so sick having to rebuild an engine because you went against the laws of physics. It's one thing to rev to 9k, it's another thing to think it's "super cool yO!" Sounds like rice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CA6VTEC &raquo;</TD></TR><TR><TD CLASS="quote">

<FONT COLOR="royalblue">If you have to rev to 9k to make power than I would not consider that a very efficient turbo. Plus w/ a stroke that big you don't need to rev that high to make power. Honda does shyt like this for a reason, they not as crazy as we think. Also, not many B series owners make power @ 9k. </FONT></TD></TR></TABLE>


Thats not true at all. The vast majority of high HP b series street cars (10 seconds, even a couple in high 9s) rev out to 9k or in plenty of cases 10k to spool the huge turbos. Go check out the setups in FI and drag racing.

 

Justin Izumi ( http://www.altech.com.pl/wbt/_specy/f22a1trb1.htm ) said he revs his to 8. My max would probably be around 7- 7.5 though - and that would all depend on where power was being made.