Thread: 236WHP & 165Torque Stock Bottom End

^I thought they were under a redesign? #shrug.

Yea where are the trumpets from? I've been looking for awhile for some decent velocity stacks.

Ross Machine Racing - Velocity Stacks

ninja edit.

I have to give SR20GTi-R credit for being upfront about the possible calibration problem with this particular dyno.

Early on, I had my doubt about the #s coming from the big bore builds and this 2.0 engine. I have no problem with the hp power figures, but it was the peak torque figures that raised a red flag for me. Like others have mention, to make high hp all you have to do is to maintain the torque at a higher rpm, but peak torque is a measure equivalent to volumetric efficiency. To put it into to perspective lets look at some high performance engines.

The highest torque per liter for a production car is from the new Ferrari 458 Italia at 89 ft-lbs/liter or 400 ft-lbs/4.499 cc.

Racing engines:

2006 F1 2.4 liter, 214 ft-lbs peak torque= 89 ft-lbs/liter
2006 Nascar 5.87 liter, 520 ft-lbs peak torque= 88.5 ft-lb/liter
Prostock 95 ft-lb/liter

As you can see, the Prostock engine is the king of NA engines excluding Diesel and Rotary.

Remember, these figures are at the crank.

Now lets look at the big bore VE making 234ft-lbs at the wheel, 234 ft-lbs/ 2.4 liter = 97.5 ft-lbs/ liter, that figure would shame all the all out racing engines. This is where I have my doubts.

In order for a NA 2.0 VE to make the same 97.5 ft-lbs/liter, it would have to make a peak torque of 195 ft-lbs at wheel, not possible.

Other than the dyno dynamic being off, I think you guys are doing a great job.

5speed just broke it down.

stratton.

I like the professionalism going on around here. Keep up the good work fellows.

Who cares what a dyno reads anyways? If it's slow down a track high hp numbers don't mean shit.

I'd rather have a 400 hp 11 sec car than 1200 hp 12 sec car.

In other news, what size trumpets did you use in that im?

If k20s and b20vtecs can do it y not a properly tuned vvl ?? Only way put this thing at the track Mph don't lie

k20's theres stock f3 k20s doing 250 whp with bolt ons, stock motors !

a b20vtec is not a stock motor in anyway. its a built motor either way you look at it.

stratton.