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Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
Looking for your feedback
Here are 2 links to a customers engine that I would like to hear others feedback. Please read both threads and give your thoughts.
460 heads - 7879blueovalbronco.com
460 problems - 7879blueovalbronco.com
Thanks!!
Tim Meyer
460 heads - 7879blueovalbronco.com
460 problems - 7879blueovalbronco.com
Thanks!!
Tim Meyer
Posting Guru
Joined: Jan 2005
Posts: 1,299
Likes: 2
From: The Vieux Ford, Kansas
I can see how this could be very frustrating from both ends. I was good friends with my machinest in high school and an engine he built for my best friend shot crap, turned out to be a bad cam from comp. Being in the middle was no fun being on the end would be worse. It really sounds like a lean condition or timing to me but that has already been said. What is his fuel system like(carb tuned or just bolted on, fuel pump weak)? He confesses to not know anything about engines, does he know what spark knock and pinging sound like? It seems unlikely that the engine would be assembled wrong the same way twice. I am also wandering what he is buying for distributors, stock smog ear EGR stuff with a ton of total advance, or mabey some kind of performance unit that has a really fast curve for use in a light weight race car. I have heard good things about you frequently on this site and the whole thing just sounds kinda fishy. I for sure wouldn't give away any more free motors with out knowing if his fuel and ignition systems are right. Some people don't realize that replacing a motor under warranty comes out of some ones pocket or mabey they just don't care.
-Johnboy
-Johnboy
Elder User
Joined: Jan 2004
Posts: 887
Likes: 0
From: Colorado
You and the customer have seen the engine. I think that the only thing you can get from having people on this forum read over the posts would be SPECULATION, and useless..
You know your **** about engines, get the engine and troubleshoot it.
If you determine it was your fault (somehow) cover it.
If you determine it was a part he installed or something he had changed at another shop, dont warranty it.
Sometimes part of being a professional is having to tell a customer that they are wrong.
You know your **** about engines, get the engine and troubleshoot it.
If you determine it was your fault (somehow) cover it.
If you determine it was a part he installed or something he had changed at another shop, dont warranty it.
Sometimes part of being a professional is having to tell a customer that they are wrong.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
engine, with all different components, and taking that problematic one + all components
he added/changed/deleted and doing a triage on it to figure out what happened. When
you're finished, I guess you could fix it and sell it. This would hopefully make the guy
happy and also protect your reputation while giving you time to figure out what happened.
Senior User
Joined: Feb 2009
Posts: 308
Likes: 0
From: Southern NM
Ok Tim,here is my 2 cents.I am new to this site,but not engines and failures.This guy makes a lot of noise about valve failures.The head(s)must have been off.What did you find in the failed parts?Did the inertia welds break where the face is mated to the stem?Was all the debris removed fom the cylinders?Was all the debris removed from the intake manifold?I see failures in Caterpillar heavy engines every day from intake valves seperating,blowing out of the intake port,and into the intake stream where it can pay a visit to the other cylinders.It then becomes a progressive failure.Do any of the other valve faces look torched or guttered?Was there a valve seat failure?Does the engine exhibit any signs of overspeed ie;bent pushrods,other bent valves?In the case of the extreme exhaust heat,is the engine overfueled,does it have an adequate amount of intake air,is there an exhaust restriction?Where is the valve timing?Where is the ignition timing?A lot of unknowns,and all you get is a report from him.Look at the failed parts.With all the parts swapping,and other shops involved,I don't think it would be a warranty issue.Sorry about the long post guys.
