Unlikely maybe, but has anyone got any RR figures or similar that show how much power and torque smallish capacity n/a engines have at low rpm? Ie 1000-3000rpm?

Any old engines, production zetecs etc, nothing flash.

Ta

 

ballpark figure is probably about 100lbft of engines of that type at a couple of K rpm

 

Im told the ST170 engine is designed to make 80% of its peak torque (145 lbft) at just 2200 rpm. So working on these figures it should produce around 116 lbft at just 2200 rpm.

Is that any help steve?

 

Yeah, thats great, more info the better.

I presumed theyd make around 100lb/ft at 2000-3000ish, no idea about lower.

Just wondered as even though i drive a car with a wanky motor like that, tis hard to know what kind of poke its actually doing at low revs

Keep it coming if anyone else has more examples

 

I can also tell you that my stage 1 RST 1.6 cvh (standard cam, head, turbo and internals) makes around 115 lbft at 2000 rpm.

Not really what you asked but good to compair none the less

 

thats interesting, is it on boost at all then? as thats impressive for a 1.6

 

Not sure if its on boost. My autometer boost gauge shows it just making 0 - 1 psi (ish), depends how accurate the gauge is and how accurate the rollers are

The RST is making about 140 lbft @ 2500rpm and its at that point that the torque really starts to rise.

I can tell you that my ST170 feels exactly like my RST does at full throttle and low rpm (from 1800 rpm up to 3000 rpm) its only around 2500 rpm that the RST starts to exceed the ST170 peak torque and the ST170 starts to feel flat again

 

Thats really interesting the off boost performance.

Considering people always bang on about larger capacity and higher compression making a massive difference low down than smaller capacity and low comp.

Seems the difference down there is tiny, and as the car comes on boost above there, it dont matter

 

http://img9.imageshack.us/my.php?image=graph14dz.jpg

Standard CTR last weekend ( borrowed from SPACEMONKEY on ZSOC.com )

 

Brillant example matt, nice one

 

Civic Tyre R

1500rpm 26.8bhp 92lbs/ft
2000rpm 42bhp 109lbs/ft
2500rpm 54bhp 113lbs/ft
3000rpm 69bhp 120lbs/ft
3500rpm 82bhp 123ibs/ft
4000rpm 122bhp122ibs/ft