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Mechanical tach on a 1725, how hard can it be?

Thistle Grey

Thistle Grey

Donation Time
I have dropped the 1725 from the parts car into my SI as a short term solution, but of course the tach cable is left hanging in the engine compartment with nothing to connect to. I have a spare distributor and stand with take-off from the 1498, but before I start tearing into it, can someone tell me if this is even possible. I would rather not switch to a later tach if possible.
 
J

johnd

Donation Time
My SII car came with a 1725 engine and the original SII mechanical tach. In order it get it to work the PO had to lengthen (slightly - about 1/4") the oil pump drive shaft. This setup will not work with an unmodified 1725 oil pump (which are the only pumps currently available on the market).
 
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