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Heads oil leak
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brese73
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PostPosted: Tue Jul 01, 2014 7:14 am    Post subject: Heads oil leak Reply with quote

I have oil leaking from where there the heads mate to the jugs. I read somewhere that there is no gasket for this mating. Is permatex a solution here, or do I need to have the heads and jugs machined?
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Eric&Barb
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PostPosted: Tue Jul 01, 2014 7:32 am    Post subject: Reply with quote

If you have oil leaking out of there you have bigger problems. That is a combustion chamber and should not be leaking oil out of it. Heads are machined to seal to the cylinders and do not use any sealant.

More likely the oil leak is from one of the push rod tubes instead.
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j.pickens
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PostPosted: Tue Jul 01, 2014 7:52 am    Post subject: Reply with quote

Yes, the only oil connection from the crankcase to the heads is through the pushrod tubes.
Unless you have totally shot piston rings.
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brese73
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PostPosted: Tue Jul 01, 2014 8:12 am    Post subject: Reply with quote

I can clearly see oil is leaking from where the heads mate to the cylinder jugs. So the solution is to have the heads and jugs machined?
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Eric&Barb
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PostPosted: Tue Jul 01, 2014 8:56 am    Post subject: Reply with quote

brese73 wrote:
I can clearly see oil is leaking from where the heads mate to the cylinder jugs. So the solution is to have the heads and jugs machined?


If that much oil is coming out of there, it is time for an engine rebuild. Would be like you noticing fecal matter was coming out of your nose.
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brese73
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PostPosted: Tue Jul 01, 2014 9:40 am    Post subject: Reply with quote

It's a recent rebuild with less than 3000 miles from a reputable VW mechanic
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Eric&Barb
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PostPosted: Tue Jul 01, 2014 9:51 am    Post subject: Reply with quote

Then you are going to need to take it apart and find the problem.
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brese73
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PostPosted: Tue Jul 01, 2014 10:28 am    Post subject: Reply with quote

Oh so it could something other than the heads and jugs not flush against each other. Think I've been had. This engine has been leaking like a sive since the day I bought it. Thought it was just a leaky tube, but oh well. Time to chuck this POS.
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Clara Premium Member
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PostPosted: Tue Jul 01, 2014 10:34 am    Post subject: Reply with quote

brese73 wrote:
It's a recent rebuild with less than 3000 miles from a reputable VW mechanic


Quote:
This engine has been leaking like a sive since the day I bought it.


Take it back to the mechanic.
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brese73
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PostPosted: Tue Jul 01, 2014 10:38 am    Post subject: Reply with quote

Sometimes it's better to cut your losses than try and deal with the mechanic that screwed you over in the first place. Chucking this engine in the Atlantic Ocean.
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PostPosted: Tue Jul 01, 2014 10:54 am    Post subject: Reply with quote

j.pickens wrote:
Yes, the only oil connection from the crankcase to the heads is through the pushrod tubes.
Unless you have totally shot piston rings.


I have seen oil seep from the rocker studs if the o ring is shot or missing.
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Harleyelf
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PostPosted: Tue Jul 01, 2014 10:55 am    Post subject: Reply with quote

Might be as simple as a slipped valve guide, might be a cracked head. Try swapping the heads and see if the problem moves.

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ritchiet002
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PostPosted: Tue Jul 01, 2014 11:12 am    Post subject: Reply with quote

Clara wrote:
brese73 wrote:
It's a recent rebuild with less than 3000 miles from a reputable VW mechanic


Quote:
This engine has been leaking like a sive since the day I bought it.


Take it back to the mechanic.


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RPGreg2600
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PostPosted: Tue Jul 01, 2014 12:14 pm    Post subject: Reply with quote

You're going to throw out an engine because it leaks oil? That's crazy. It's worth a couple hundred as a core to someone. While you're throwing away money, throw some my way!


Possible leaking oil cooler and fan blowing oil over the top of the head?
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Z
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PostPosted: Tue Jul 01, 2014 1:15 pm    Post subject: Reply with quote

Where the leak APPEARS to be coming from is very often not where it really is. Pull it, start disassembling and see what it looks like then.
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williamM
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PostPosted: Tue Jul 01, 2014 1:41 pm    Post subject: Reply with quote

Eric&Barb wrote:
brese73 wrote:
I can clearly see oil is leaking from where the heads mate to the cylinder jugs. So the solution is to have the heads and jugs machined?


If that much oil is coming out of there, it is time for an engine rebuild. Would be like you noticing fecal matter was coming out of your nose.



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brese73
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PostPosted: Tue Jul 01, 2014 1:47 pm    Post subject: Reply with quote

The oil cooler isn't leaking. I can clearly see oil dripping between the heads and jugs on both heads. The mechanic slapped together some old warped heads and charged me full price. I'm willing to bet the rest of the internals are old worn parts as well. Just won't do business with this reputable Vw mechanic anymore. Def not wasting my time or money on this POS engine. Too many headaches. Gonna enjoy tossing it at the dump. Time to buy new turnkey with a warranty.
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Z
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PostPosted: Tue Jul 01, 2014 2:06 pm    Post subject: Reply with quote

German engine tin is getting hard to find....perhaps don't just toss the entire thing?
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BarryL Premium Member
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PostPosted: Tue Jul 01, 2014 2:56 pm    Post subject: Reply with quote

Take off your rockers and tighten the bottom row of stud nuts. If the head is slightly loose compression will force out oil and carbon and the fan will blow it down so it looks like a huge oil leak. Tightening that accessable row of nuts will help. Readjust the tappets when you get done.
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brese73
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PostPosted: Tue Jul 01, 2014 3:05 pm    Post subject: Reply with quote

its not the head studs. I just replaced the pushrod tube bushings and tightened the studs by the book. pretty sure these heads and jugs are toast.
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