VDO Tach pulse per revolution

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VDO Tach pulse per revolution

Postby klofdahl » Tue Feb 06, 2018 1:31 pm

Just put in a new VDO electronic Tach truck and need to figure out how to calibrate it. I called VDO direct and was told to divide the crankshaft pulley diameter (6 7/8"). by the alternator pulley diameter (measure when I get home) times 1/2 the pulse per revolution from the alternator? Was hoping to find those specs online for pulse from the alternator but nothing so far. Anybody?
74 International Travelette, 89 Cummins intercooled, bored .020 over. Hamilton 182, 60# springs, SXE 62, M&H#4 fuel pin and spacer, THD Bosh 5x13 injectors, ARP head studs, 366 spring, THD LP, Twerked VE, BHAF, 4" turbo back, nv4500, SB 500/1000 clutch, 29 spline np205, 37's, 4:10's.
fuel pin?
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