Author Topic: head gasket level oil leak  (Read 5347 times)

July 14, 2010, 05:30:38 am

haybayian

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head gasket level oil leak
« on: July 14, 2010, 05:30:38 am »
Hello vw friends,
I have a VW AAZ recently remaned which works well except for a small but annoying oil leak at the interface between the block and the head. I have retorqued the thing twice and it does not seem to make a difference. Would a different type of gasket potentially be the answer? If not what else do I need to do?

Thanks.

Haybayian
Keep it simple if you can.

Reply #1July 14, 2010, 08:35:41 am

Luckypabst

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Re: head gasket level oil leak
« Reply #1 on: July 14, 2010, 08:35:41 am »
Where is it leaking? Between cyl. 3 and 4 on the front?
'82 TD Westy
'81 NA Caddy

Reply #2July 16, 2010, 06:39:59 am

haybayian

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Re: head gasket level oil leak
« Reply #2 on: July 16, 2010, 06:39:59 am »
Where is it leaking? Between cyl. 3 and 4 on the front?

Thanks for your attention. The leak seems to be at the gasket between cyl 3 and 4 indeed. I believe that my current gasket is metal (FE) and I can see three small holes on the front side of it.
Keep it simple if you can.

Reply #3July 16, 2010, 08:03:59 am

Vincent Waldon

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Re: head gasket level oil leak
« Reply #3 on: July 16, 2010, 08:03:59 am »
When the engine was remanufactured do you know if the head and deck surfaces were re-faced?

Small warpages in these two surfaces often lead to localized leaks, particularly with the metal head gasket used on AAZs. If this is the case there's no real cure except to have the surfaces re-worked. 

Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #4July 17, 2010, 10:22:17 am

haybayian

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Re: head gasket level oil leak
« Reply #4 on: July 17, 2010, 10:22:17 am »
When the engine was remanufactured do you know if the head and deck surfaces were re-faced?

Small warpages in these two surfaces often lead to localized leaks, particularly with the metal head gasket used on AAZs. If this is the case there's no real cure except to have the surfaces re-worked. 



Hi Vince,
No I don't know that they have done that. Would a thick fiber gasket potentially help?
Thanks,
Haybayian
Keep it simple if you can.

Reply #5July 17, 2010, 10:27:15 am

Rabbit on Roids

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Re: head gasket level oil leak
« Reply #5 on: July 17, 2010, 10:27:15 am »
fiber gaskets almost always seal better, because they can conform and squish quite a bit better.

Reply #6July 17, 2010, 11:08:35 am

burn_your_money

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Re: head gasket level oil leak
« Reply #6 on: July 17, 2010, 11:08:35 am »
I don't know of a fiber gasket for the AAZ. I wanted to use one when I did my headgasket since my head was slightly warped. I decided to just get the head machined.
Tyler

Reply #7July 17, 2010, 11:39:11 am

Rabbit on Roids

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Re: head gasket level oil leak
« Reply #7 on: July 17, 2010, 11:39:11 am »
even the super early AAZ's had metal gaskets? cause i know an aaz is just a diesel ABA, and the very first ABAs were equipped with a fiber gasket.

Reply #8July 17, 2010, 02:48:31 pm

Vincent Waldon

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Re: head gasket level oil leak
« Reply #8 on: July 17, 2010, 02:48:31 pm »
I don't know of a fiber gasket for the AAZ.

Me neither... pretty sure they've been MLS since day 1.
Vince

Edmonton, Alberta, Canada
2001 silver TDI Jetta Malone Stage 1.5 , 2001 blue TDI Jetta SBIII 216s Malone Stage 3, 1970 Bay Window bus

Gone but not forgotten: 1969/1971 Beetles, 1969/1974 Westies, 1979 Rabbit, 1986 TD Jetta, 1992 gas Jetta, 1994 TD Jetta

Reply #9July 17, 2010, 09:25:28 pm

wolf_walker

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Re: head gasket level oil leak
« Reply #9 on: July 17, 2010, 09:25:28 pm »
I put my first MLS gasket on this 1.6 with that spray copper crap all my euro shop customers rave about, first one I've had that does NOT leak oil SOMEWHERE between the head and block.
Time will tell though.
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Reply #10July 18, 2010, 10:16:46 am

Rabbit on Roids

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Re: head gasket level oil leak
« Reply #10 on: July 18, 2010, 10:16:46 am »
copper and aluminum together do bad things. like corrode each other VERY fast. ive always used the silver colored stuff instead of the copper stuff. copper would be good on a cast iron headed engine. but for aluminum heads, ive used silver floral paint. it works great. worked on my acura, and a few of my grandpas diesels.

Reply #11July 18, 2010, 10:41:47 am

burn_your_money

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Re: head gasket level oil leak
« Reply #11 on: July 18, 2010, 10:41:47 am »
Yes I have heard that the early AAZs used a fiber gasket but AFAIK they are all NLA
Tyler

Reply #12July 18, 2010, 02:42:51 pm

OM617

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Re: head gasket level oil leak
« Reply #12 on: July 18, 2010, 02:42:51 pm »
copper and aluminum together do bad things.

ONLY if there is an electrolyte present.