Quote:
Originally Posted by vonsmog
OK thanks guys, guess I have to find a diesel tach to stick into my gauge cluster. At least I now know. Will check to see if there are any new cars in the Pick-n-pull or buy one on ebay.
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Make sure you get the one that matches your engine's pickup - the flywheel pickup is completely different than the vibration damper/tach amp pickup....and get the tach face too.
If you need something in the interim to just get you by you could get something like this -
https://www.banggood.com/4-Digital-LED-Tachometer-RPM-Speed-Meter-Proximity-Switch-Sensor-NPN-p-1045439.html. I have one on my lathe and it works great.
There are also guys that have tapped into the alternator for a signal and done a calibration based on pulley sizes.
Post 235 and the next several posts on the following page will give some additional information on the tach issue -
http://www.peachparts.com/shopforum/diesel-discussion/308791-380sl-diesel-conversion-project-16.html