pete95zhn

Slightly OT, but this evening I've heard a claim of a S2 engine ( = 3,0l 16v for those who do not know... ) producing whopping 450 hp, without mechanical or chemical charging.
That's 150 hp / l. Would someone wiser than me in engines tell if that's doable, and how much that would cost...
I didn't buy that claim. No exact specs or dyno sheets available so far.

ritzblitz

Id say it's doable but it's a serious long shot. The cost would be astronomical and the motor wouldnt last very long.

Id imagine 10k+ rpm to make that kind of power.

lee101315

Agreed, its usually very expensive race engines that make 150hp/liter. Not impossible though

savvas944

could be in theory but it may have to rev to 9,000 rpm , power band of 2,000 rpm only
dry sump ,titanium rods ,forged pistons, wild solid cams, different head with very large valves and throats,continously variable timing,
and induction with the biggest throttle bodies ever made. not to mention a plane forged crank with a max weight 50% of its present.

you will be looking F1 technology and costs.

Mazeratis MC12 ,Ferrari Enzo FXX, AND fERRARI 430 scuderia can barely manage 125 bhp/litre
with this technolgy

i woould question the claim of 150bhp/litre with evidence,unless we are talking little ponies here.

theedge

With very high compression, E85 or similar fuel all the time, and all sorts of other goodies.... Id still kind of doubt 450.

smlporsche

N F W...

badcoupe

I'd say thats high unless it's a serious effort motor. Our USAC 164 midget engine made 369hp and it was itb kinsler mech fuel injection 8 injectors, carillo rods etc. Very serious motor cost 42K to build new.

DDP

If he was claiming crank power then I believe that's possible. But why? The engine wouldn't last long and it'd cost a fortune. I know of a 2.5 or 2.6 (can't remember) 8v NA engine producing a bit over 300whp. Engine is dry sump'd, 9k rpm motor. Only lasts about 25-30 hours. No, I don't have a dyno graph. I guess this is just another claim then.

JustinL

Absolutely.

Joel8005

Agreed NFW!!!!!!!!

ritzblitz

I know of a 300bhp 2.5 NA motor as well... Had a ton of money in it.

Mike Buck

I don't know what power it made and haven't seen it raced it many many years, but this S2 (924 chassis with S2 mill, iirc) is still ones of the fastest production based cars i've ever seen at Summit Point. Only picture i have is post wreck at this DE. It had carbs instead of FI, (i think). ITB's for sure. I'd believe it if someone told me 400hp, easy. Driver/builder was a guy named Mike Mount, iirc

JET951

I had a mate who was talking to a girl at a bar in Tehran who's step brothers uncle's dog was told by the neighbours burmese cat that it had heard of a 400+ hp N/A 944. the cat was told by the vet and the vet was told by his wife who heard it from santa. i verified the story to be true when i asked santa at christmas when he visited. So it must be true

rdhayward

I heard the same story. Must doubly true.

Brian Morris

This car is probably one of the most highly developed 944s in the world:

http://www.raetech.com/944_Racing/944.php

According to this post from the builder it's a 2.5 16V making 300+ @ 8000 RPM

http://forums.pelicanparts.com/showp...18&postcount=7

Being generous and just extrapolating 20% out to 3.0 you get 360+. In reality you'd probably get the 10% increase going out to the 2.7 bore, but you may get 0 HP going the longer stroke. Any displacement gain from longer stroke could well be offset by reduced rpm's because of the stroke length. Going to a longer stroke and 8000+ seems unlikely - I'm too lazy to figure out the piston speeds but they'd be pretty high.