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CASE HALF LEAKING OIL

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clinker42 Officially Full-On Dubber

381 posts · joined Aug 2008 ·

#762616
Met guy with a beetle today and he wants to know if an oil leak can be fixed easily. I had a look and its coming form between the case halfs 2 inches from the round oil sump plate. Is pulling the engine and splitting it the only option?

greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 ·

#762675
cooler seals of with the fn housing and replace all
👍👍😂🙅🥷😬🤓

jsheppard64 Officially Full-On Dubber

323 posts · joined Mar 2008 ·

#762680
when i first got my car
i cleaned the case half area and silicone over it
and it stop leaking for a few months lol

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#762683
clinker42 wrote:Met guy with a beetle today and he wants to know if an oil leak can be fixed easily. I had a look and its coming form between the case halfs 2 inches from the round oil sump plate. Is pulling the engine and splitting it the only option?
drain the oil...

leave the sump off...

clean the area.. the join with petrol etc... alcohol..etc

really clean... blow air on it....

use SILASTIC SILICON ON IT...

DO THE WHOLE JOIN...

SHOULD FIX THE PROBLEM....

LEE

PS; You could also clean the join from inside the sump
with a bit of petrol etc... would help too.... lee

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- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

johny rotten Officially Full-On Dubber

366 posts · joined Apr 2004 ·

#762704
Don't use Silastic on magnesium alloy , It contains ACID 🙅🙅🙅🙅
( I only used the capitols so LEE could read it):😂


Its unlikely to be leaking from between the cases , more like the oil is running down from behind the flywheel or cooler seals .

clinker42 Officially Full-On Dubber

381 posts · joined Aug 2008 ·

#762706
No its from the case, exactly where this arrow is pointing.

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matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#762708
Someone probably levered the case apart on the lug and damaged the sealing surface.

I was going to suggest MAGIC.

As much as I hate to say it as I hate the 'quick fix' but maybe do Lee's cleaning thing then instead of acidic silicone use a neutral cure (nonacidic) silicone or even polyurathane sealant like Sikaflex or Bostic constructinn adhesive, but it will need to be uber clean and dry.

If you split the case a full rebuild will be on the cards.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#762716
Hi

i ALWAYS HAVE NON ACIDIC NEUTRAL CURE silicone on hand so maybe I've used that before...

but I do use black silastic on all exhaust gaskets on My VW
with no leaks... and the silastic doesn't burn either...

I don't think the acid in silicone is active once it dries.???

the most important part is CLEAN... clean clean..

I did have an oil leak about the same place but silicon has stopped that...

something silicon etc cannot stop is synthetic oil leaking from My gearbox...

My gearbox has Hypoid oil in it plus I also have ATF in the torque converter etc...

and the Castrol synthetic oil is leaking thru the stud threads ..

so I don't recommend synthetic oil.. lol

its not pouring out... but is always oily to touch...

not good when i want to paint everything... lol

sorry about the upper case... I like to see the light on,... lol

LEE



matberry wrote:Someone probably levered the case apart on the lug and damaged the sealing surface.

I was going to suggest MAGIC.

As much as I hate to say it as I hate the 'quick fix' but maybe do Lee's cleaning thing then instead of acidic silicone use a neutral cure (nonacidic) silicone or even polyurathane sealant like Sikaflex or Bostic constructinn adhesive, but it will need to be uber clean and dry.

If you split the case a full rebuild will be on the cards.
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

clinker42 Officially Full-On Dubber

381 posts · joined Aug 2008 ·

#762717
Matt

I reckon your right, screw driver to sperate the case. Im going to talk to the guys at work tomorrow, but I reckon we have some super fine drills in the machine shop, drill few holes in the case say 5 mil deep and then I can make up some plugs a fe thou bigger, bag them in the holes for him and bingo, should expand the case thickness by a thou or two lol.

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#762720
clinker42 wrote:Matt

I reckon your right, screw driver to sperate the case. Im going to talk to the guys at work tomorrow, but I reckon we have some super fine drills in the machine shop, drill few holes in the case say 5 mil deep and then I can make up some plugs a fe thou bigger, bag them in the holes for him and bingo, should expand the case thickness by a thou or two lol.
Yikes..


I wouldn't do that...

You would need to undo all the bolts holding the case together to get any gap at all....

and oil is going to leak from all the lower joints....

LEE

I'd try silicon first... if it doesn't work....??
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#762730
before u do anything give the whole engine a good wash with degreaser

make sure there is no track of oil on the case

then run it till its warmed up and return to flat ground and have a squiz at the engine to determine if it is the case joint or coming from higher up lkike the oil cooler or push rod seals or oil pump it may save an engine pull and strip
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#762748
I'd try the sealer before doing any plug drilling. You don't want to upset the join as it could only produce more oil leaks by putting pressure on the case join and actually opening it up elsewhere. At least some sealer wont hurt anything, whereas the plug beside the split may fix it or may not and the magnesium alloy is very soft lightweight material that is easily damaged.
As Dave says, make doubly sure that is where the oil is coming from.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE