[DiMora]

Regardless of whether you are a Kenne Bell fan or not, they test the daylights out of everything.

Kenne Bell's testing experience on their twin-screw was a "safe" RWHP of 525 and their engine failed at 600 RWHP.

Is it possible to see a stock engine make 600 RWHP on a dyno run without "ventilating" itself? Yep.

Is it going to hold together run like that all the time? Nope.

[DiMora]

Originally Posted by Mickey You have to look at the torque though, way more important when discussing the longevity of a motor. The torque on the above car is only 465 (quite low when compared to how much horsepower it's running). Not to mention when you consider how the centri's "hit" the motor..they build boost, not slam it down its throat instantly like a twin screw IMO, a ~520rwhp ~500rwtq twinscrewed, tvs'd, or roots, like Nastystangs, is much more impressive on stock motor than 550rwhp 465rwtq from a centri blown car Imagine the torque dynojoe's saleen blown car was making with ~550rwhp..not mention that car lasted for over 200 passes (so it proved its longevity)...lets hope he chimes in

+1

[forensicsteve]

Yep...good tune is critical but there are way more factors involved than just a dyno number. You're going to have discrepancies with numbers from one type of dyno to another, from one operator to another, from one transmission to another (since the figures come off the rear wheels).

So why do motors let go at less than 500 rw. Who runs race fuel...most folk don't. Fuel from a drum is much more reliable and consistent than pump. Then conditions on the dyno are not the same as those at the dragstrip. You're not launching, banging gears, doing burnouts on the dyno.

You dyno today....then go to the track maybe a week or month(s) from now. Tune is the same. Weather is different, things have changed on the car. You rock and roll at the track, things shake loose, car parameters change. How many folk datalog at the track, make fine adjustments on the tune or just shut it down if warranted, based upon the log?

[NastyFX4]

Originally Posted by DiMora Regardless of whether you are a Kenne Bell fan or not, they test the daylights out of everything.

Yup! Just like how they claim you don't gain any power from longtubes, right?