Topic: Successful Engine Rebuilding
I have questions for those who have successfully rebuilt engines for Lemons use. I realize the best strategy for reliable Lemons engines is to find relatively low mileage junkyard engines. These questions are mostly curiosity based.
The recurring theme in Lemons seems to be that freshly rebuilt engines tend to blow up in short order. For those who have successfully rebuilt engines that have survived Lemons races what do you consider to be the reason they last?
1)Are the rebuilt engines that fail, simply not broken in well enough? Breaking in an engine in a non-street legal car is certainly a challenge.
2)Are tolerances an issue on freshly rebuilt engines? I imagine most of us rebuilding engines will shoot for the tighter end of the tolerance spec. Should endurance engines be built with tolerances on the looser side of things?
3)Is engine rebuilding inherently challenging and therefore many teams lack the time, resources, or attention to detail that is required.
4)Is lack of machine work the issue? Do engines fail because parts are being reused when they are out of spec?
Let me know if your team has found any patterns with success or failure when dealing with engine rebuilds.