heinrich

Larry that is very disappointing. I paid you top dollar. You represented the motor as in excellent shape. If I had sold you an engine with this severe a defect, even if I truly did not know about it, you can be sure that I would be either refunding you a significant amount of money, or taking it back in refund. Larry, I do hope my money brings you no happiness.

Z

That's exactly as expected. That should be a big clue as to the cause of the damage, and also that it wasn't due to anything related to the oil or it's temperature.

I would consider what's pictured damage, not wear. Those two things are different, with different causes. GTs having tended to live a "harder life" is part of it. There are a couple of aspects that make the GTs different, which work together to make that harder life as it relates to this issue more likely to occur than with non-GT models.

If you're GT cams had the pitting like those pictured, your memory isn't off at all as far as that being one part of the cause.

That would be true if all of the oil going to the engine went through the filter material. it doesn't. If it were me, I'd check the bearings before installing the engine in a car.

It is.

I don't know exactly what the final intentions for the car and engine are. The GTS engine has potentially weaker rods, and pistons, a less favorable geometry, more potential crankcase windage issues, and a higher compression ratio. Every one of those things is the opposite of what I'd want if it were me and putting together an engine that's going to be boosted.

Yes, there are several things that could be done to help prevent it. The easiest and cheapest would be to shift before getting all the way to the top of the RPM range. GTs have a higher rev limiter setting than other models. Not a particularly good idea for a stock GT engine in my opinion, unless you like hammering chunks off of cam lobes.

Leon Speed

This might be legally right, but morally it is wrong.

Dave928S

Z ... a few questions..

If the damage was not due to breakdown of oil film thickness and consequent metal to metal contact/scuffing/overheating, I'd be interested to hear your theory as to how the surfaces lost metal.

I'd also be interested to hear how you define and differentiate between damage and wear in this situation.

Fabio421

Here you go Larry. You've earned it.

hacker-pschorr

I had every intention of closing this thread down since I see no good coming from the dog pile that could ensue. With Z’s post being as informative as it is (as his posts usually are) I see a possible good coming from this discussion.

Please don’t make me regret this decision. Larry has said his piece, so have the rest of you. Take it offline if you have something to say about how you feel this transaction unfolded.

I disagree 100%

I do not know Larry from any random stranger on the street and I consider Heinrich a good friend, so it pains me to take this stance.

It all started here:
https://rennlist.com/forums/928-foru...-for-sale.html

Larry purchased a GT for a low enough sum to justify gutting the drivetrain (most people start with a battered shell for this purpose) and tossing it aside.

It wasn't even Larry who brought the engine to the forum and offered it, the previous owner did. Unless it was agreed that Larry would tear down the engine for a full inspection, or Ernest made some kind of effort to insure the engine was good, this is the text book example of an "as-is" scenario.

What would I do if I were Heinrich? Pop in S4 cams, inspect the cylinder bores and replace the rod bearings and call it a day.

heinrich

In my state, there is a law that says unless I explicitly agreed to take the engine as-is, I have legal recourse. I did not agree to any such thing. So ... opinions abound, but that is the law of the land, and that is where I am, and will be, coming from.