scorke

iTrader: (18)

7800 is the stock recommendation, however they also reccomend a lot of other things that most owner's ignore

How do cams allow an engine to rev higher?

Scorke

iTune

iTrader: (3)

You must understand....again. The stock valvetrain is not the only thing limiting high revs. The stock rod ratio and stock rods are also a very limiting factor in high revs(due to the very high g forces involved with piston acceleration at revs over 8K). Once built properly, the bottom end can handle more revs(when built with the proper rod ratio for high revs, along with good billit rods, ARP rod bolts...ect) and the valvetrain must be built as well to keep valve float in check at these revs.

We choose to stay with a 2.0l, built with the proper rod ratio to facilitate high revs. A stroker will not have the correct rod ratio to promote high revs.

CJ

Ludikraut

iTrader: (17)

correction: _some_owners_



l8r)

evilevo2006

iTrader: (1)

Well what can a 2.3 rev to safly???? 8k?? No more then that??

scorke

iTrader: (18)

^ depends on who you speak to, what you consider safe, and what you want out of your motor.

The whole idea of a 2.3 is to increase tq, tq drops with RPMs so most 2.3 guys aren't too concerned with screaming there motors and the ones that are concerned with revving to the moon run 2.1s.

Doug from TopSpeed said I was safe to run up to 8300 rpms with stock valve springs on my built 2.3.

Scorke

evilevo2006

iTrader: (1)

Well I would like a 8krpm capable daily driven safe setup. If a 2.3 can do that then that's what I want. Reason for picking a 2.3 is
A. The extra trq
B. Able to rev too 8k
C. Faster spool up on biger turbo's

There my main reason.

Ludikraut

iTrader: (17)

It will depend on which kit you go with. In other words, it will depend on which valvetrain you're running, which pistons, which rods, and which crank. For example, AMS sells different 2.3l kits. Between them, their 2.3RR can be revved higher, since it uses different internals than their "standard" 2.3 stroker.

Furthermore, if you put together a balanced setup, then there may not be a need at all to rev out to 8K. 7500 RPM on a 2.3L GT35R setup seems to work fairly well with the stock gearing, judging from the few dyno charts I've seen of that type of setup here on the forums. If you're going with a smaller turbo (i.e. GT30, 50 trim, or FP Green), then it would definitely be pointless to rev beyond 7500 RPM other than trying to avoid shifting into 5th on a 1/4 mile run.

l8r)

EvoRecordSetter

2.3 Bottom end has nothing to do with B.

scorke

iTrader: (18)

Yes and no..... the 2.3 CAN do that, but so can a stock build.

Scorke