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914World.com _ 914World Garage _ SOT: Rotary Tach

Posted by: marks914 Dec 10 2007, 07:12 PM

Anyone know if a regular aftermarket tach will work on a 83-84 RX-7 motor?
I was thinking it might work in 6 cyl mode ( 2 rotors, firing 3 times)?

Thx

Mark

Posted by: Dr. Roger Dec 10 2007, 07:50 PM

that's what I was kinda' thinking.. as long as there is only ONE ground wire to measure spark impulses from.


Posted by: woobn8r Dec 10 2007, 09:57 PM

I had an autometer tach on my RX-7...
Buddy installed it, so I don't know if it was configured for a 4 or 6....but I'm sure the autometer tech site would some useful info....

S.

Posted by: Rotary'14 Dec 11 2007, 03:56 PM

A rotary tach will work just fine. Any tach for a 4 cylinder will work for a rotary,, so I am sure a rotary tach should work fine with a regular 4 banger.

-Rob

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