My dyno #'s :)

[acelesson]

how the hell am I a troll? Im stating the painfully obvious fact. You people have stated that the reason why your cars have blown up is because of too much boost.

Some of you need to stop whining everytime someone makes a TRUE negative fact about your cars.

 

[Mike R]

how the hell am I a troll? Im stating the painfully obvious fact. You people have stated that the reason why your cars have blown up is because of too much boost.

Some of you need to stop whining everytime someone makes a TRUE negative fact about your cars.

hmm guess you haven't read much have you...most of the ones I've read about were from people turning too high rpm and letting off causing rod stretch and failure.

 

[DiscreetSpeed]

yeah i dont go past 6 grand when shifting.

 

[ThrillRide]

what about the 2 that poped that were stock? hmm...

 

[kwiktsi]

hmm guess you haven't read much have you...most of the ones I've read about were from people turning too high rpm and letting off causing rod stretch and failure.

Is that what is happening? I know that is common in high-hp LT1 (or was it LS1- can't remember) with the crack forged rods. The rods are near bullet proof when it comes to "compression" but tend to explode if they forcefully get stretched- like lifting suddenly at a high RPM at the end of a run and letting the momentum of the car spin the motor. It is the sudden transion from pressure to stretch that makes them fail from what I have heard. I wonder if HEAVY engine breaking will have the same affect ?
Joe

 

[Mike R]

From what I've read, yes. That's what's killed most of 'em on the dyno's. Lifting near the rev limit, over 6500-7K. Dunno about engine braking though. I'd think there is a load...but the trnasition from on throttle to off might pop a rod. (dunno)

There was a post about an engine blowing on the dyno at 7300 when the dyno guy lifted.

 

[kwiktsi]

From what I've read, yes. That's what's killed most of 'em on the dyno's. Lifting near the rev limit, over 6500-7K. Dunno about engine braking though. I'd think there is a load...but the trnasition from on throttle to off might pop a rod. (dunno)

There was a post about an engine blowing on the dyno at 7300 when the dyno guy lifted.

Well, that would definetely explain why I never had an ounce of trouble vs. all the popped engines ... I guess that is where the experience comes in. Funny thing though is I never even think of it, it is just habit to not do that . Especially on a dyno as heavy as the rollers are!! At the end of my pulls, the clutch simultaneously went to the floor as I gradually lifted.
Joe