dieselfitter1

Anyone know of a good place i can get a mechanical tach drive for my cummins. Im running a 1st. gen cummins in a pulling tractor and ive had a mechanical tach laying around for years, just need the drive unit for it.

CaptainChrysler

I think some of the older bluebird buses had one. It gets driven from the pump gear, so the stock oil filler neck will have to go.

Got any pics of the project?

dieselfitter1

Thanks, I'll Try To Get Some Pics Posted When I Get A Chance.

CaptainChrysler

I got bored and looked into it a little bit:

http://www.4btswaps.com/forum/showthread.php?t=360

^ There is talk of it there, and some PN's. I need to get a tach on the '89. One of those would be neat, but I will have to wait for a used one. I am gonna try to hook one up to the alt. tonight maybe.

Here is a pic of one at least, from the above link.

Riflemanusmc

They can also be had off of a marine application...

Jim Lane

I had Cummins Cal Pacific research the numbers for me back in January 2009 and they are available from Cummins for about $230.00.

Stationary Fire Pumps also use them.

Jim

CruisingRam

My boys and I had an interesting idea we are thinking of making happen- a hood tach, muscle car style, with a fuel pressure gauge as well. I built a set of motorcycle gauges once with the concept, along with a Duster I did decades ago.

Starting to look at external gauges for the project. I think it will be actually easier than jumping into the dash, and allow me to run a mechanical fuel pressure gauges.

Then I will run the three gauge pods on the pillar for boost, oil pressure and EGT, and think I will have the issue done.