Disco 1 Getting the idle revs right

Maat · Dec 17, 2023

I have a laser tachometer, how should I go about measuring the revs at idle on a 300tdi? Assuming it does not have the correct alternator pulley. I can think of painting a white stripe on the belt or one of the bigger pulleys.

Any ideas?

D1Nut · Dec 17, 2023

i am guessing but I suspect the fan pulley is the same size as the crank pulley and a white stripe on a fan blade might work well

Maat · Dec 17, 2023

D1Nut said:
i am guessing but I suspect the fan pulley is the same size as the crank pulley and a white stripe on a fan blade might work well

I'm thinking the most no-nonsense approach is directly on the crank pulley, but it's difficult to crawl under and get a reading. I guess that's what I'll do, no point in messing about with ratios and whatnot.

Disco 1 Getting the idle revs right

Maat

Active Member

D1Nut

Well-Known Member

Maat

Active Member

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