Timing advance in 300 TDT Engine?

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heav - 15 Jul 2007 06:13 GMT

As many of you know, I just installed a remanufactured engine from
Metric Motors in my 1982 300 TDT.

I think there is a problem with the timing advance. On Monday I will
talk to Mike at Metric about it, but for now, does anyone know how the
timing advance works on these engines? I think there is a centrifugal
based timing advance connected to the camshaft. Is that right?

Is there anything related to the vacuum system that advances or
retards the timing?

Thanks.

Paul

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-->> T.G. Lambach <<-- - 15 Jul 2007 07:52 GMT

There's no timing adjustment of the camshaft.

There IS a an injection timing device for the injection pump. The timing
chain turns an intermediate sprocket which drives both the vacuum pump
and the injection pump. The engine's vacuum pump is mounted on the front
side of that device - you'd see the timing advance if the vacuum pump
were removed - and the injection pump to the rear. The vacuum pump is
indifferent to being advanced or not - it doesn't matter at all because
the vacuum pump is simply a supply pump for the car's power brake and
other vacuum needs. A diesel doesn't need or use vacuum (other than to
actuate its emission controls).

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