Converting diesel tach to Gas tach...

[daves66nova]

how can i hook up a tach that was used for a diesel to run on a gasoline engine?

 

[expat]

Would the tach read high enough?
What engines?
Why not change the tach to one suitable for a gas engine?

 

[daves66nova]

If i remember correctly,it reads to 4,000.I want to use it on a 4 cyl.I have this one already,don't want to buy another one if i can just rewire it

 

[97prizm]

I briefly skimmed the following article and it looks like you might be able to perform the tach swap, but with some work involved. VW diesel Tach

 

[Kuato]

You'll be taching it up to redline all the time!

 

[JHZR2]

My diesel tachs use a magnetic kick-up and an amplifier ha creates the pulses that drive the tach. How would your application pick up the signal?

 

[expat]

If you are talking about your 22R, you may be able to pick up the signal from a terminal on the side of the coil/ignitor (used for the Gas tach)I'm not sure if the reading will be accurate (or, for that matter if it will work at all)