[yragat]

When using an oil-filled coil Does it have to be mounted vertically,or is it OK to mount it horizontal? Also when running a no-hood car is it helpful to mount the coil inside the car?

[Rustydawg]

Should be able to run it horizontally, I can't see it affecting operation at all. The coil should be sealed well enough that oil doesn't seep out just 'cause it is on it's side or upside down.

I could see an advantage to mounting the coil inside the cab to avoid engine bay heat or moisture - and it can look cleaner too.

[Runnin'OnEmpty]

You can mount an oil-filled coil in any position EXCEPT straight up. If the coil's mounted exactly vertical, the air bubble (that's always present in an oil-fillled coil) will be at the tower terminal and the heat build-up in that area will cause the coil to fail.

That's the reason all oil-filled stock coils are mounted at an angle.

[yragat]

Thank you,I had no idea of that!

[Rustydawg]

Ditto.

Taking coil trivia to the next level! Interesting little fact, that.

[NEW INTERIORS]

I have use them mounted horizontal, or vertical,with no trouble....

[carsavvycook]

60's Chevrolet V8's had the coil mounted straight up from the factory. They still sell that style mounting bracket, for the original purists. I have only seen a couple of these go bad ever.

I work on a stock 1950 Buick straight 8, that has it mounted horizontal. When it stalls going up hill, and runs fine down hill, or on a flat section of road, it is time to replace the coil again. (4 so far in over 20 years) They all have leaked some oil out.

60's Fords had them mounted both ways, with few problems.

All of the universal after-market coil brackets I have ever installed, have been horizontal, or vertical, not angled.

Go figure.