Tired and frustrated with the glycol in oil leak..

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Originally Posted by Jerry Clayton

What temp do you run your oil at????I have seen several cases of the milkshake that was just combustion by product blowby that condensed in the ribbed valve covers---change the valve covers and run the oil hotter with more ventilation--- you might find it advantagious to run a tube to a whisle in the exhaust header that will provide suction that the pcv won't do at wot.

Doesn't matter, condensation in the oil does NOT taste like glycol. The taste is so strong I don't even have to send a sample out to the lab to confirm. 190 to 210 on the oil temps. Actually... the hotter the engine/oil runs (higher coolant system pressures/temperatures too) the more "milk shake" I get.

My ventilation is so good that my rear seal doesn't even leak. I've 2 breathers AND a PCV.

Originally Posted by ERA Chas

I would clean up the mating faces of intake and heads, then place the intake back on with just a few fasteners hand tight and no gaskets . Then measure the intake to head mating gaps both front and rear with feelers as well as the China rails. Possibly KC did not machine the intake to match the head angle. Doves are NOT perfect-but you know that already...

Pushrod alignment should be checked too. I went through this with my Dove TW long ago. If you find slant in the surfaces, give Barry the numbers and he will true the intake for you.

I checked all gaps with a feeler every time I assemble. The last time I put it together everything was perfect. The gasket witness marking and crush depth was perfect. I paid particular attention to it when I pulled it apart today. This is the second go-round with this. Both times the intake gaskets had a perfect seal.

Barry has already cut the intake and clearanced the pushrod holes. Once torqued down the intake/head port alignment is perfecto. That's the major reason I don't scrap the intake and get a new one, just too much $$ and time in the intake.



Thinking I needed to pre-heat the manifold to duplicate engine temps and thus cause it to expand and start leaking I preheated it to 250 deg. Necessity is the mother of invention, don't you know. I used one of my infrared laser heat guns to verify manifold temps.



I jumped to pressure up to 150 psi @ 250 deg and STILL NO LEAK. I am bummed..

I guess it's time to talk to some builders to help figure this out. It really could turn into a witch hunt, which I really don't have the time for right now.