time to get out your check book and rebuild
KingJay said:Why would they do a sixth gear pull ? !
baloo said:I feel for you and I don't want sound overly negative, but if an engine can't handle 20 sec at wide open throttle, I wouldn't necessarily blame the dyno operator. In terms of load and duration the difference between a 4th gear and a 6th gear pull is fairly small, and if those extra seconds cause engine damage, chances are it was running on borrowed time to begin with.
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TCSoff said:There was no tuning invloved it was just a dyno pull.
NinoAvila said:Thanks...
I called the shop to talk to the owner to let him know what happened to me and while he was nice, it was clear I was going to get no assistance from him other than if I wanted him to order my parts for me (at his cost) which for him, means nothing out of his pocket.
He also went on to state that while the operator did do a pull in 6th, "he didn't do a full pull, he lifted before the run finished". What I don't think he realized is that as soon as the rollers stopped, he proceeded with a 4th gear pull.
Either way, I figured since I was the one who orchestrated the dyno day, brought him business and was very straight forward about everything that he'd at least toss me a bone. Nada.
I went in for a simple dyno-pull. No tuning involved. I *assumed* these guys knew what they were doing. That was *MY* mistake.
I'm trying to work a deal for some help through a local place. I hope it comes through.
Even then, it's still 2400 that I didn't have to spend if someone knew what they were doing on the dyno. It's an expensive mistake I WILL NOT be repeating.
-N
HISSMAN said:That is completely wrong. There is a huge difference in engine load between 4th and 6th gear. Go out in a cobra and pull from 3K rpms in 4th gear, then pul from 3K rpms in 6th gear and tell me what you think.
-Jeff
baloo said:Sure there's a difference, after all 6th is 59% longer than 4th, but it's still less load than using 6th on the street because there's no aerodynamic drag. In other words, using 6th on that particular dyno produces the same load as using 4th on a dyno with 59% more inertia. Sure, putting it in 6th is not how you would expect a car to by dyno'd, but imho building an engine that blows up after a few seconds at less than 100% load is a bigger mistake.