I reinstall the valve guides and start cleaning the parts

by Jim Phoenix on December 31, 2011

Removing the remainder of the exhaust valves to correct the seal installation

Picture 1 of 9

{ 2 comments… read them below or add one }

Bob Pellow January 6, 2012 at 9:12 am

Jim,

Is there any information anywhere that says you would have to use pliobond or some other high temperature glue to ensure the seals don’t part from the guides? And why, do you think, it was only the exhaust seals? Hmmm, temperature , of course. Are there other seals available that would perform better. I bet you are worried that this glue will let go somewhere down the line and the car will start blowing oil again. Perplexing, especially since you have done such a complete job on the engine.

Bob Pellow
Parksville, BC

Jim Phoenix January 18, 2012 at 4:06 pm

Bob, No nothing says Plibond is needed, but I was afraid that if the seals had been installed properly (which they weren’t) then maybe the Pliobond would help keep them in place. In the end, it was obvious that the seals were never pushed down onto the new guides. Now all the Pliobond does is give me peace of mind that they’ll never come off. I’ve used a lot of Pliobond in my aircraft mechanic past and it’s rated to high temps and once set up, needs a jackhammer to release (or soaking in MEK). I’ve never had nor seen a Pliobond failure and I’ve used it in a lot of oily and high heat applications, not to mention the primary (and only) glue holding aircraft fabric in place, so I’m not worried about it at all. This was certainly a case of the head rebuilder forgetting to push the seals down. Car is running great now with no issues save for a leaking heater core which I have out on the bench at the moment.

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