Quote:
Originally Posted by Samuel M. Ross
It is my observation that these vintage '75-85 MBZ diesels can be out of time due to chain wear or otherwise a considerable amount before you will finally know it. When you have an engine that runs best at 24 Deg. BTDC, well that's a great deal more advance than any gas engine I ever heard of so that's a definite difference and as I see it this large amount of advance " in-and-of-itself " means that there is is greater latitude for things to get " out of wack/spec " before you are going to notice.
If we were to start comparing the %age of timing deviation from "spec" for both gas and diesel [deviation before you begin to notice what we might consider to be a problem] well I think we would see greater similarities between the two.
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I agree.
We looked at six vehicles at one of the GTG's with the pulse timing unit and they varied by nearly 8 degrees from the earliest to the latest. Nobody reported any starting problems or running issues.
I believe the engine will start and run perfectly fine even when its 10 degrees retarded.
Naturally, the fuel economy and the power won't be to spec and the engine will definitely benefit from the correct timing.
One of our members set IP timing on the opposite stroke (360 degrees late). The engine started immediately but developed no power. It smoked the entire neighborhood with massive clouds of white smoke. Starting them is not a problem.