With situations like this, there is never a winner...Seen it way too many times first hand.
A hot restart would lead me more to coolant. 16 psi trying to push coolant into a cyl after key off.
Most all the cars I've worked on over the last 15 years have been classics. Not driven much the coolant consumption is hard to see. Idk, I just don't think because it was in there possession last makes them responsible without proof.
Customer is happy. That's all that matters. Dallas Fort Worth 5.0 Mustang Club - View Single Post - Here is why my engine locked up
That's pretty much what happen. Car drove fine to the shop. It was parked for a couple of days. They started it up fine drove it out of the shop drove it onto the dyno turned it off. They strapped it to the dyno and was switching out the injectors for the e85 tune. Once they finished that they try to start it up I believe it turned over twice then clunk. Would never start again.
Customer is happy. That's all that matters. Dallas Fort Worth 5.0 Mustang Club - View Single Post - Here is why my engine locked up
You need to re-read the thread. That is not what happened. Try coming up with some adult venacular of your own rather than the usual internet jargon of that a teenager on Facebook. Swing on that.
They said the pistons were dry when they did there investigations. Well, it is possible that when they tried to restart and the engine turned twice, that excess fuel on the piston was burnt, creating excess combustion, which could result in a bent rod. Set spark to fuel and it will burn till it is gone. I would expect the piston to be dry after combustion.
None taken. But I try to think of everything it could be or you could over look something. If coolant never crossed my mind and I drain the pan I could miss seeing the coolant come out before the oil. I should start a thread with some of the stuff I have seen come thru here. You'll pull your hair out because it doesn't make sense. Sometimes you gotta stretch to get it figured. "It was JUST RUNNNING. WTF?!" LOL Then trying to explain to the customer he got another problem on top of what they dropped it off for, and it's expensive Fun fun :nonono:No offense because you do have a shop and do great work from what ive seen and heard about you. But I really think you are reaching on the coolant issue.
-Thomas
Hydrolocked like that, it wouldnt burn, too high of a gas to air ratio.
Gas does evaporate and it would also leak down past the rings. How long were the plugs out before the engine was torn down?
It takes a surpsingly small amount of liquid to hydrolock a motor.
They said the pistons were dry when they did there investigations. Well, it is possible that when they tried to restart and the engine turned twice, that excess fuel on the piston was burnt, creating excess combustion, which could result in a bent rod. Set spark to fuel and it will burn till it is gone. I would expect the piston to be dry after combustion. Anyway, if the OP is satisfied with the deal he worked out with the shop, then all this speculation, including mine, is meaningless. If the OP is happy with the end results, thats all that matters. At this point, I'm very interested in hearing about how this bad a** engine turns out after the rebuild.
Hmm, I did not think that the starter would be strong enough to bend a rod.:shrug:
If there was no combustion event in any of the cylinders (i.e. didnt try to start) then I do not see how the starter alone could have done this. Hell I had to go buy the highest torque 16v starter on the market and run a 16v battery to starter to turn over a sbc methanol motor with 15:1 compression with a 871 blower and i know it would take far more force to bend that rod than that. I know anything can happen but i dont see the starter being able to do this. Now if there was in fact some combustion (in the other cylinders) then yes the force of the other cylinders would most def have the ability to bend the rod. If anyone has seen first hand the starter alone do this then please let us know. anyway good luck on the new build, bottom line is your gonna have a BA setup now so even if the shop flat out messed up they did you a favor...forced mod is a good mod, lol.