Truely Stumped...Stumped!

So, I bouhgt a '63 willy's it has the F-Head engine, I was able to drive it after we got the brakes on. One day I noticed my oil pressure guage rising and falling. I called my Dad who is a mechanic(30yrs. pro Exp.) come to find out the oil dipstick tube had weird milky looking oil/coolant in it. Diagnosis Blown head gasket. Well, after two or three oil changes magnafluxing the cylinder head and even having it machined flat, the milky oil is still there. Now I know what you're thinking(Cracked Engine Block) we were too but the kicker is that I'm not losing coolant and the engine block looks dry as a bone??? Any Ideas?

 

new head job bad, cracked block.
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Are you driving it enough to get the engine fully warmed up, and evaporate any moisture in the oil? Thermostat good? PCV system okay?

Pete

 

If your not loosing coolant like you say, then it is condensate. Can't be anything else. Gas in oil won't usually turn milky on dip stick. If the dipstick does not have a good seal around the tube it will draw in cold air and will condense on the dip stick. Could be the pblm.

 

Yep. what he said. Check cooling sytem. F heads can have a problem with cracks around the #2, #3 exhaust valve seat. Mine had two and also had a milky residue at the top of the oil fill tube, ended up rebuilding mine and having the cracks metal stitched. Hope that's not what you find.

 

How about checking the crank case ventilation system.

 

Well I know it's not condensate cause the iol has a grey tint to it after i've driven it for a few days. Thanks for the thought though. I think we're going to press the cooling system as our last hoorah before going switching engines. I don't feel comfy with a metal stitched block( heard to many stories). Should I go Vortec V-6 if I have too switch?

 

True what Jeep50 says about cracks by the valve seats. But I've had them repaired sucessfully with threaded plugs inserted along the crack.

I will add that I've always thought some gray-ish 'milkshake' in the oil filler tube was pretty much ordinary in F-heads. If you aren't losing any coolant, maybe you are within normal condensate limits?

Good luck.

 

well I was wrong!! We pressed the cooling system and it held 7lbs for longer than two min. So we think it's just the combo of bad residule oil and condensate on the dip stick. thanks for the advice guys it really helped. Glad I didn't have to cop-out to a newer engine :0)

 

see, worried about nothing.

change your oil, filter etc. then go have fun.

 

Read the label on the Berryman B-12 can and apply to the oil. It might get rid of the junk in the pan.

I've also seen the guys on this forum talk about using seafoam(?). That should get the engine cleaned out some and it's a lot less costly than an engine.

 

seafoam and berryman b-12 FTW...