FEF is getting tach'd

[ggdad1951]

Nope tach built for flat 6 6volt system

[Don Coatney]

Nope tach built for flat 6 6volt system

 

Interesting. Six volt I understand but why would flathead or overhead make a difference?

[Jeff Balazs]

The NOS one I have will work with 6 or 12 volt.....pos or neg ground .........and 4, 6 or 8 cylinder. It is supposed to even work on a CDI system but it has problems with the trigger once the revs are up.

 

Jeff

[ggdad1951]

Interesting. Six volt I understand but why would flathead or overhead make a difference?

Doesn't don't know why I put that there...long days no sleep at the show is my guess

[Todd B]

Maybe it's just pinging and not a rpm issue, my timing is pretty far forward, if I'm hard on it I can make it ping on regular gas, premium and it all goes away.

[Todd B]

Maybe it's just pinging and not a rpm issue, my timing is pretty far forward, if I'm hard on it I can make it ping on regular gas, premium and it all goes away.

I have saying this for years but all the others say I am wrong. Shell Premium is all I run. I really notice the pinging pulling my trailer using low octane gas.

[NiftyFifty]

I try to use shell here too, it's the only gas for sure that doesn't use ethanol in their premium. When we did the Devils Lake show a few weeks ago we got the Sinclair premium...really nice stuff, my car ran like a champ with that stuff..and helped fix the bad tank of premium I got in Dunseith ND. I think sometimes the word "ping" confuses people as the noise is more like a low pitched knocking, but they expect something else.

[55 Fargo]

My Fargo, runs just fine on Manitoba Regular gas supposedly 10% ethanol, but usually buy Premium, for the no ethanol content.

My engine does not ping, so my timing must not be too far advanced, so far no issues with fuel quality in this area.

If your engine is detonating a lot, should you not retard the timing a bit?