I want to see pictures of the piston before.I can make a good guess.
ALL MOTOR BOLT-ON & TUNED Motor failure
- Thread starter JayVee
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OK, this is good to all take into consideration. Thanks J...This all helps or will help soon.
CPRsm
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What do the plugs look like? If there is only one cylinder that shows hot or detonation an injector failure is likely. Post some good pics of the plugs
Which is why I mentioned injector "failure", maybe slightly clogged or "leaky". Same effect but it would be isolated to a certain cylinder.
Jayvee yes some people have experienced fuel pump failure on e85. Seems hit or miss, some have a bunch of mile no issues and some just run into issues. This most likely has nothing to do with your car though.
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He mentioned to me the plug on cylinder 1, the gap had closed. As far as plug inspection, I have reminded him to take pictures and label each plug.
Will do... and yes the #1 cylinder plug wasn't collapsed but had a closer gappage then the remaining which all looked the same but not collapsed. Just slightly compressed but definitely closer the the other 7.
No he wasn't. This car was actually still on the base tune, as he was transferring from pump to e85. My computer took a dump about 2 months ago, so I haven't been able to help him datalog. But the car has been out and about for 2 months or so on base tune.
Which I feel bad about....
Yes, this car was tuned by AED on pump gas. No logs were taken on e85. However it is my understanding Shaun sets base tunes up on the safe side., and in a safe manner. However there is no substitute for datalogs. ...
CPRsm
Active Member
Yeah piston definitely came apart w that, the oil in throttle and the "go go gadget smoke screen."
He said mentioned to me it looked more like a burned through/melted hole. Not like the piston slapped it or a piece of piston.
My theory is bad injector probably clogged in some way shape or form yet allowing enough fuel in to help induce a seriously lean condition, high cylinder temp/serious detonation. The hole was probably melted through and plug over heated, although I'm sure there are fragments of the ringland from the piston slap also. The hole probably let in some serious oil from the oil squirters in these blocks and just oil in general being sloshed around which probably aided in smoke screen. Possibly lifted head( not sure how hard that is on these motors)and blown gasket from detonation/pressure, which might explain the antifreeze and more smoke screen lol.
Will probably look like this: this picture is for demonstration purposes only. This is not Jayvee's car.
Just my opinion.
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Hope everything works out OP
While I agree with this. Plenty of companies gives tunes out without datalogs nor do they require them. Sure that is the best idea and I personally wouldn't run my car hard without logging. But I mean, Shaun is a well respected tuner, and I doubt he would create an unsafe tune.
With that said sure a datalog might have picked something up. But let's say it didn't, and this ends up being and injector issue. Not much you could have done about an injector if it just failed on the spot.
I've been NA, TVS and TVS on E85 with Shaun (AED)... there is no way in hell I'd take the car down the track on a base tune... Of course base logs do consist of a 3k to 7K WOT pull. But rowing threw the gears at WOT on a base log... hell to the NO even if Shaun said it was ok lol.
There might of been a issue he could of seen in a base WOT log, speculation of course. Good luck OP this is never nice to see...
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We're on the same page. It was a choice he made, that I personally wouldn't have. What's done is done, time to move forward. He is just really curious as to what May have happened, and really want s to find the real issue so that his new motor does not do the same.
Hell even the big boys formula 1/nascar/top fuel... blow up motors, sometimes that's just the game. But there is always a cause!
Nice car btw!!
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