Just wondered whether 85 hp at the wheels was a reasonable figure. Don't know any engine specs other than its running twin dellorto's & 2250cc

possible

Old motor with leaky stock heads, a mild cam and restrictive exhaust could/would produce less

A lot more info would be required

Lots of variables there, but it is'nt a lot for that size engine, my 2.0 litre type 1 with 043 VW heads makes 122 at the wheels on a bad day

I am thinking good combo at that size 160hp or more @ the flywheel, what ever that is at the wheels.

My 2007cc showed 100bhp at the wheels on Leons dyno.
Its not just the size, its the combination of parts.
Anyone can build a motor, its knowing what works!

I would like to know how to get 160hp from my 2276 with idf's, street cam and heads. I'm all ears ...

My 2332 with VW non welded heads and 44x38 valves made 140+ at the wheels, so you're not being unrealistic Vlad

And since we're on the street Chris, that was under 10:1 comp and totally streetable, 48 IDFs or Dells will do it.

I'm looking forward to the Dyno day at Leon's. There will be several 2.2+ litre street engines running , I'll post results for the OP to compare .

And particularly if you live in the US. All quoted dub engine hp outputs there are 50% greater. Must be better air in the northern hemisphere

http://forums.aussieveedubbers.com/viewtopic.php?tid=25222 

Quote:

Originally posted by bajachris88 And particularly if you live in the US. All quoted dub engine hp outputs there are 50% greater. Must be better air in the northern hemisphere

I haven't got dyno sheet, but from memory it was about 4700rpm. I know there are a lot of variables that come into it, just didn't think 85 hp was that good for a 2250cc engine. Having said that, I'm new to this big bore/stroker stuff!

If it's making its power at that low rpm, it's probably a very mild combination. A friends 2l kombi motor on webers, mild cam etc was just under 80hp at the wheels and is a strong motor for a comparison point.

85 ponies at 4,700 ain't to be sneezed at.

Could be a nice torquey streeter that is non stressed

Makes sense. Back to fundamentals the power is equal to torque x rotational speed.

So you could have a HUGE torque (like a typical diesel) come about at a nice and low RPM, but because of the low revs it will equate to a small HP.

yes, thats cos its boarder at the bottom end and fall off quicker at the top end compared to dp gearing is also part of the equation.

I have not see direct comparison between the 2, but I bet the sp has more torque thus more hp available at the low revs than dp does.


if you have 1000 torques and 0rpm, there is 0 hp and it does not move.

good way to look at it if everything else is equal and disregarding the little factors like gear ratios and crap like that

double the hp = double the acceleration

double the rpm but same hp(halving the torque to equal)= same as before

double the torque same hp(halving the rpm to equal)= same as before

but we have torque curve and thus power curves, so in reality acceleration and top speed depend on the curve and gear ratios and other factors like weight etc..

85whp @ 4700rpm os ok, what are the Torque figures? Do you like how it drives, does it put a smile on your face, if you answerred yes, what difference does the amount of HP make?

This whole thread is based on speculative information, no engine combination info and no dyno sheet.
What exactly is a 2250cc, did you buy the engine with the seller telling you the information without substantiated evidence?

Two different engine builders will build two different engines even if the combination of parts are the same and theoretical engine conbinations and Hp calculations are only a guideline of the outcome eg. mumbo jumbo.

More information please, even just for curiosity.

It makes sense to me now why T4 motors have good torque ... it is because they flow just the same as a single port T1

Yeah, thats exactly why they make good torque..............

85 good, you don't really get to rev past 5000rpm on the streets to often, just get out on the road and enjoy it .

Quote:

Originally posted by vassy66T1 It makes sense to me now why T4 motors have good torque ... it is because they flow just the same as a single port T1