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-   -   Factory tach and MSD 6-series boxes? (http://www.peachparts.com/shopforum/showthread.php?t=218076)

Hit Man X 03-31-2008 06:29 PM
Factory tach and MSD 6-series boxes?
 
My 280S is sans tach, I picked up a factory 280SE tach cluster a while back. Anyone happen to know if I can drive the factory tach off the 6-series tach output on the box?

If not, how possible would it be to use a factory style setup with the crank trigger and tach amp (like found in the Diesel cars)?

cth350 03-31-2008 07:43 PM
The tach needs to divide by the number of cylinders per rev if it's electrical. You could, in theory, multiply the pulse train for a straight 6 to drive a v8 tach (that's a 280se 3.5 tach?) by 8/6 with a little circuitry. That or find one of the tachs that was installed in the 250E or 250CE in europe. A rare thing. -CTH

Hit Man X 04-01-2008 02:08 PM
The tach I have is for the M110/I6 car, at least I believe so due to the 6500rpm redline.

alabbasi 04-01-2008 03:51 PM
Quote:
Originally Posted by cth350 (Post 1810169)
The tach needs to divide by the number of cylinders per rev if it's electrical. You could, in theory, multiply the pulse train for a straight 6 to drive a v8 tach (that's a 280se 3.5 tach?) by 8/6 with a little circuitry. That or find one of the tachs that was installed in the 250E or 250CE in europe. A rare thing. -CTH
I think the 280S in question is a W116 model car and not a W108.


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