Mark builds some bad ass engines, he does everything himself, all in his shop. He built me one (455 HP) years ago and I continually run the piss outa it. Burns no oil and has never given me a problem. I run it hard....
Is he going to make this right if cause is lean tune??No way I'd get a different tuner. For every billed hour hes put in three he doesnt charge for. He makes evertthing right, always has. 25 years doing business with him without a complaint.
And the best ones are all far from me.lot of shit to miss in that tuning stuff.
a lot.
Ok ... I was thinking he supplied the engine ...If there's an issue with the A/F ratio it will be in the tuning software. We went through it brfore we took the truck off the jackstands.
I watched him scroll throgh the program, it eas tuned 14/1 neutral throttle decreasing to 10/1 during acceleration.
The GM tech said quiet clearly thst engine doesn't like boost.
Tim didnt sell me the engine, i bought it from a third party knowing it was used and no warranty.
Tim is a well respected mechanic in a small rural area where its impossible to hide if you treat people badly.
He's a straight up guy.
Ok, I'll go with that.If there's an issue with the A/F ratio it will be in the tuning software. We went through it brfore we took the truck off the jackstands.
I watched him scroll throgh the program, it eas tuned 14/1 neutral throttle decreasing to 10/1 during acceleration.
The GM tech said quiet clearly thst engine doesn't like boost.
Tim didnt sell me the engine, i bought it from a third party knowing it was used and no warranty.
Tim is a well respected mechanic in a small rural area where its impossible to hide if you treat people badly.
He's a straight up guy.
Ok, I'll go with that.
That leaves spitting the valve retainer.
Just one?Your mechanic is a detail guy for sure.
Sucks when something that looks so nice is so incredibly broken on the inside. Kinda like that one girlfriend I had.
Based upon this additional info, I revise my possible cause.Cool, mine (did) that, on town and country tires, all the way out to 80 when i upshifted into over drive. In OD it hooked and until it blew up, somwhere short of redline, it had me pinned to the seat.
Fucking gnarly.
Those Dyno Junk rollers don't put a load on the engine like a real dyno. We had an olde water break dyne that could stall a GS1100 engine at full chat, unless the tyre gave way. And if you set the RPM at 8000 on a Factory Dyne, no matter how much gas you pour into it, it won't let the engine go higher.Based upon this additional info, I revise my possible cause.
In OD, near redline, and hooked up is the most stress your engine has likely ever had on it. Even more than on a dyno because dynos are run with the vehicle's transmission in whatever gear is nearest 1:1 ratio.
Some component broke. Likely candidates are wrist pin, piston, connecting rod, and crankshaft. I don't know which is the weakest link in your engine. I'll hazard a guess at the wrist pin.
My earlier guess of spitting a valve retainer isn't likely, as that usually occurs at high rpm, e.g. redline. Since you blew up at less than redline, and had likely been at redline earlier while going through the gears without a problem, that is probably not the cause.
B-15 shipping tomorow. 2 yr. 50K mile warranty.
thats when you add twin turbos and see if you can explode the engine from 2 types of boost!!!Seriously, watch the vid wp posted and consider the internal stress of having it seize at full power. I expect every component in my engine is compromised, bent or broken.
I would never be able to trust it.