Competition Any Memory or Replay Tach on a diesel...found out how!

[RyanB]

Just got back from a nice little trip to Ohio this weekend and stopped at Summit Racing to pick up a bunch of stuff instead of shipping it up to Canada. While I was there I was talking to one of the Tech guys working on the counter that really knew his stuff about diesels. We got on the subject of Tach's and the lack of availablity of a good racing tach for a Diesel engine and he said check this thing out! And one nice thing... there price is only $37. 60 so it is pretty cheap to experiment.



Tach Signal GMR Pickup, PN 8918



It is basically a tach adapter that picks up any 12volt signal of an injector wire and transforms it into a tach signal that will then work with any standard Gasser style tach.



Pretty cool stuff but then figured that for most of us guys (12valve/24valver's) that its not going to work because we have fully mechanical injectors. But it will be great for the Common Rail guys.



Now, here is a question for you all... anyone have any idea's how to make this work on a 12valve or 24valve. Maybe hook it up to the crank trigger somehow?



Here are the instal instructions http://static.summitracing.com/global/images/instructions/msd-8918_89181_frm27320.pdf



Just thought I would share that info with you all.



RyanB

 

[mattymac]

Thats pretty cool!

 

[COMP461]

This will work on any set up,

 

[RyanB]

Can you go into further detail as to what all is there? I was under the impression that the reason a normal tach wouldn't work is because the normal gasser tacks pick up off the coil or distributer and then send the signal to the tach which is actually two turns of the crank shaft. Where if you do it directly off the crank you the tach will be technically showing twice the amount of RPM because it picks it up on every revelution... . now if you could take it off the cam gear... that might work?



The above maybe totally out to lunch but thats what I have understood from other people.



RyanB

 

[Highfinance97]

Greg did you drill holes so the signal would read off of the nipples ??



I did this on mine, -fluid-damper-tach-install





Michael

 

[RyanB]

Anyone else have any info or ideas on how to run a standard gasser tach?

 

[Highfinance97]

Anyone else have any info or ideas on how to run a standard gasser tach?

stewart warner has tachs that run off of the alternator like this one



sw-performance





Michael

 

[KAlder]

That Summit adapter probly won't work either, common rail injectors run @ 90 volts.

 

[RyanB]

That Summit adapter probly won't work either, common rail injectors run @ 90 volts.

Wow, 90 volts... thats crazy and I didn't know that. I am still trying to figure this out and hopefully will have something put together soon.