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Tachometer rehab 120-130

posted by  longhorizon on  Sat Mar 12 17:45 CST 2016
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last visit: Sat Oct 18 15:42 CST 2014
[RELATED]

I have one of those pod-mounted (Smiths, I believe) accessory tachometers that Volvo sold back in the day... I'm running electronic ignition (sourced from a 240 engine) and dual SU's. I've read that the old style tachometers won't give an accurate reading with electronic ignition and that age itself can render them inaccurate.

I verified that the tachometer works; ie. I hooked it up temporarily in the engine bay and it gives readings and responds to revs. Since the engine seems to 'rev' only to about 2000 RPMs or so, I do believe that it's off by more than a little bit!

I'd like to get it 'converted/rebuilt' to working with my setup. Absolute accuracy not required but ballpark accuracy would be nice...

Any suggestions?

Thank you.

KaiS
'67 Duett






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