Dave!

I Know it's not good practice to do this regularly but my MY00 WRX RA pulls into the red quite easily (too easily in the lower gears with the gearbox that comes with the RA!). My question is, at what rpm does the rev limiter cut in (if at all)?
The red line on mine is at 7500rpm and I've occasionally seen over 8000rpm even in Top gear!

Richard Gledhill

Hmm. Bye-bye engine soon then!

I think the rev limiter on an STi is about 8200rpm, and about 7400rpm on a normal turbo. Also, I thought the STi's red line was at 8000rpm?

Richard

[This message has been edited by Richard Gledhill (edited 19 April 2001).]

MorayMackenzie

The _average_ piston speed in a standard STI EJ20 running at 8000rpm is 3779.53 feet per minute.

The upper _reliable_ limit on this metric seems to be accepted as 4000FPM. An STI EJ20 running at 8466.65RPM would be hitting this limit. Remember that this is an average piston speed, the actual piston speed at 4000FPM will fluctuate between 0FPM at top and bottom of stroke and ~10000FPM (~120Mph) mid stroke.

A stroked EJ20 will generally require a lower rev limit than the standard one.

I suspect that it may be possible to build past the 4000FPM limit using the right materials to reduce friction and deal with heat.

[This message has been edited by MorayMackenzie (edited 19 April 2001).]

Adam B

Dave

... sounds exactly like mine

Have you made any changes ???

Might be interesting to compare notes ??? ... drop me a line if you're interested.

Dave!

Thanks Guys, My passenger at the time said we hit the rev limiter at 8200 rpm in 5th gear,from your replies that sounds about right although i was too busy watching the road!

Dave!

Sorry Richard i forgot to explain..while mine is a WRX RA V6 LTD its not an STi. Perhaps this is the reason for the redline at 7500rpm and not 8000rpm.
Thanks again.