Valve adjustment question
 

I'm going to check the valve clearances on the '61 this spring. Shop manual says to get the engine up to temp, pull valve cover and adjust valves. How easy is this to do with the engine idling? Or am I better off getting up to temp and shutting down to adjust?

Re: Valve adjustment question
 

You can do it either way. I've always done it with the engine running. You'll get the job done a lot faster that way.

Re: Valve adjustment question
 

I'd say shut it down.
It might be quicker if you work fast to avoid oil splatter and getting whacked by the fan, but I can't see an advantage to let it run.

Re: Valve adjustment question
 

hello 5tractorguy, this is Lewis Matkin. The factory manual says that the valves were to be set hot at idle. Specifications are 0.012"H for the intake, and 0.018" for the exhaust. I have also set the valves cold(for obvious reasons--OUCH!) by adding 0.002" to each measurement. This method has worked well for me in the past. I hope this is of some assistance.

Cordially,
Lewis Ellis Matkin, Jr.
Ridge Manor, Fla.
1965 1002 305E-V6

Re: Valve adjustment question
 

I agree....faster and easier. Oil pressure drops down enough to keep the oil splatter to a minimum as well. :upyes:

Re: Valve adjustment question
 

Thanks guys! I'll give it a whirl at an idle and if all else fails, I can always shut down and adjust quick.

I know the fist time I did this wasn't quite accurate so I'd like to get them back to where they should be.

Re: Valve adjustment question
 

Just don't try using a box end wrench on the adjusting nut while it's going up and down. A breaker bar with a socket works much better.

Re: Valve adjustment question
 

I am afraid I have never understood the purpose and process of adjusting valve lash (clearance) while an engine is running.
First, I think damage to the gauge is possible through hammering.
Second, with the gap opening and closing around 300 times a minute at idle, how do you "feel" the exact resistance you are looking for?
Third, it is often hard to tighten the locknut without changing the gap when the rocker is still and not bouncing up and down those 300 times.

To overcome these difficulties, some real advantage must be gained by the running vs, not difference.

I should say that I have adjusted the valves of probably over 100 engines of over twenty makes over a period of 60 years.