Mechanical Tach

[NJ Metro Fan]

I bought a Triple Diamond marked IH mechanical tachometer off ebay. Anybody know how these are connected to the drive train? Considering removing the mechanicals and replace them with modern electronics.

Thanks

[dgregg]

Does it look like this one http://www.oldihc.org/photopost/showphoto.php?photo=754&cat=500&page=1 ?
This one is on my KB-7 truck. They are cable drivin off of the distributor. Built right into the base of the dissy.
guess I don't spend enough time wathcing E-Bay.:whistling:

[Doc Stewart]

Depends on your intended use. If the truck has a V8, there are many distributors out there with the mechanical drive connection that drop in.
Any truck salvage yard with Loadstars will have one. The 6 cylinder overhead valve motors also had distributors with mechanical drives but hey are a little harder to find.

I have a couple of 60's electric tachs I'd be happy to swap for that mechanical unit!

[NJ Metro Fan]

Does it look like this one http://www.oldihc.org/photopost/showphoto.php?photo=754&cat=500&page=1 ?
This one is on my KB-7 truck. They are cable drivin off of the distributor. Built right into the base of the dissy.
guess I don't spend enough time wathcing E-Bay.:whistling:


Yes that's the one. I have a KB-3 Metro with a GRD 214 with a Delco Remy 1110095 distributor. What engine is in your KB-7? I just looked at my distrib. I didn't see and rotating "port" for a cable. Where exactly does it plug into the distrib.? The base of the disassembly...? It may not be meant for the GRD.

Thanks

[dgregg]

Yes that's the one. I have a KB-3 Metro with a GRD 214 with a Delco Remy 1110095 distributor. What engine is in your KB-7? I just looked at my distrib. I didn't see and rotating "port" for a cable. Where exactly does it plug into the distrib.? The base of the disassembly...? It may not be meant for the GRD.

Thanks
Takes a special distributor. My KB 7 has a blue diamond 269 in it.
The dissy for these are completly different than the stock one and is special to the tack drive application. I've never seen one on a Green Diamond. Don't know how hard it would be to convert one from another application.

[Doc Stewart]

I don't know about mechanical tachs on Green Diamond engines either. Try Paul Barry at 'Willys America' in Cazadero, CA The Willys flathead was nearly identical to the IH Green Diamond - they were both derived from the same motor in the thirties.