Highest BHP/Litre NA production car?

yeh yeh yeh

 

Not bad! You'll get more with Optimax and a shot of octane booster, don't forget to pump up the tyres next time. What were the transmission losses and the respective crank/wheel figures?

 

couple of fat squirrels perched on the bonnet, to help stop wheelspin.

 

A mate of mine who has raced mini miglias and can drive a bit had a S2000. we had a race when I had my G40 and I easily pulled away until 100 mph when he came past me.

We then swapped cars and tried again. Same result.
I did'nt like the powerband. It felt gutless until 8000 then you had to change at 9500.
They may have 237 bhp @9500 but thats only 131 lb/ft
131x9500/5250=237


exellent handling though, and I really like the interior and digtal dash
Lee

 

My Dads recently bought an Accord Type-R and I've been driving it for the last 2 weeks. Excellent engine and lovely noise!

Before I'd driven it I'd heard people complaining about the lack of Torque, which is fairly low, 159 ft lbs @ 6700 rpm compared to the power, 212 bhp @ 7200 rpm.
But it definitely doesn't feel down on torque when driven properly. The characteristics are very similar to my valver, they need to be ragged to get the most out of them.

I find the Vtec kicks in around 5-5.5k rpm but the limiter doesn't cut in till around 8.5k rpm! Plus they have a close ratio gear box which means you can just about keep it in Vtec, although it drinks fuel on track! Excellent cars overall.

I wouldn't bother considering bike engines personally as they produce bugger all torque and as has already been said, I can't imagine the clutches lasting on a car weighing anywhere near 1000kg's which most are comparing them to.

Sean

 

8300rpm actually.

 

BMW M3 CSL spec sheet=111bhp/litre

Honda S2000 spec sheet=118bhp/litre
Edited by: royalblue8vgti

 

but thats just 1 example, and it was a tuned import, so your asking for trouble really.

I got 2yrs warranty on my standard late model UK ITR, so i can sleep easy
Edited by: GolfMk3

 

Honda have never recieved a warranty claim on their v-tec system since they have been produced.

I know BMW's M3 v-tec system (vento??) used to fail quite often and if you were unfortunate to be out of warranty you'd be asked to pay 2000+
Edited by: royalblue8vgti

 

The generally accepted rough figure for the maximum torque that a N/A engine can produce is 100Nm/L.

This equates to 73.76 ftlbs/L.

 

That'll be about right. Didn't chris mc's old car (2litre 8v) have between 150 and 155lb/ft torque??

 

bmw's vtec? Do you mean vanos!

 

Hondas claim to never have had a warranty claim on VTEC is quite right - however VTEC's have been known to go wrong outside of the warranty period

 

My 16v produces just 0ver 150 ft lb from just under 2000cc. So i'm not doing too bad.

 

Yup...my trusty old 8v made 152.8lbs/ft @ Stealth, & I have a Stealth dynoplot for the new car giving 198BHP & 158lbs/ft on 95 Unleaded!!

 

just been out in an NSX, and i can safely say, you cannot beat a NA VTEC car. It pulls so hard, sounds so dirty. One of the fastest things ive been a passenger in for a while.

 

425 / 3.586L = 118.5 bhp/L Ferrari 360CS

237 / 1.997L = 118.7 bhp/L Honda S2000

But wait ....

439 / 3.586L = 122.4 bhp/L - a clear winner for the 360 GTC
Edited by: edc1

 

100lbf-ft per litre.

 

Clear winner hmmmm...

Caterham R500 has-

Caterham developed Rover 1.8 litre K-Series. (Minster Racing Engines)
Capacity: 1,796cc 80mm (bore) x 89.3mm (stroke).
Compression Ratio: 11.5:1.
Cylinder Head: 16 valve DOHC
Max power: 230 bhp @ 8,600rpm.
Max torque: 155 lbsft @ 7,200rpm. Maximum revs 9,200rpm

230 / 1.796 = 128.06 bhp per litre

Link to stats

 

yes but it's not really a production engine is it. the s2000 engine is in thousands of cars and is quite an acheivement