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Join Date: Feb 2020
Location: west virgnia
Posts: 8
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My 79 930 turbo oil leak
I have a 1979 930 that was in storage for years i did all the common leaks that this site and my local dealer sugested. but i still have a major leak when its running it don't leak but after it shuts off and starts to cool it leaks bad it looks like it is coming from thr driver side front corner of head it runs right down the fins but i cant see the origin has anyone encountered a leak of this nature thanks
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02-10-2020, 07:46 AM
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picture of the oil leak would help
Ivan
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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02-10-2020, 08:00 AM
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Join Date: Mar 2001
Location: Marysville Wa.
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. . . . . .
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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02-10-2020, 08:01 AM
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Location: west virgnia
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ok ill get a pic up asap
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02-10-2020, 08:22 AM
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02-10-2020, 10:25 AM
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that could be your camshaft drive to the oil pump- cover seal-but looking at it most likely(oil towards the front) from rocker shaft ....either loose or in wrong place.You have to take the valve cover off and inspect it..
take a picture from the whole bottom of the engine..another thing could be your oil return tubes...o rings...if you put your hand on them and are able to turn it that would be your problem Ivan
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. Last edited by proporsche; 02-10-2020 at 10:37 AM.. |
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02-10-2020, 10:32 AM
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Join Date: Feb 2020
Location: west virgnia
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ive replaced the oil tubes
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02-11-2020, 11:36 AM
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Registered User
Join Date: Feb 2020
Location: west virgnia
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 back side view of leak origin |
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02-11-2020, 11:57 AM
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02-11-2020, 12:02 PM
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ok good to know some history..from the picks it does not look like the oil pump drive seal is leaking.More likely your rocker arm shafts ..not to bad to fix.Just have to drain the oil from the case. Remove the left valve cover ,set the engine to each cylinder so the valve are closed and the rocker are loose.Like you would be adjusting the valves procedure.But before you do anything remove the valve cover and look inside it.if you see any oil here -it is your rocker arms shaft loose.
here 
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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02-11-2020, 01:27 PM
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Amazon and others sell a oil dye that is used in conjunction with a black light and special glasses. Add dye to the tank, let it run for awhile or test drive it, then look for the tracer dye. Any leaks will stick out like a sore thumb with the black light. It works THAT good.
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02-11-2020, 02:08 PM
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Join Date: Feb 2020
Location: west virgnia
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So loose rocker arm studs will leak external?? Also new valve cover gaskets have been put on
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02-12-2020, 03:53 AM
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Yes, they will cause an external leak, via the cam housing. RSR seals help avoid that, but it's a pain to replace them all in the car. Use the dye method to pinpoint the leak.
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02-12-2020, 07:52 AM
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wvmatt. it is actually shaft not a stud.It has to be tightened using 2 allen socket or wrenches.
I am an oldtimer mechanic so i do not know anything by using a dye...If the rocker arm shaft is loose or even misplaced it will leak into the valve cover at the place i point out then will slide down between the camshaft housing and the head.... The shaft has to be like this.............on pic  In your case it could be just loose....i would start with making sure they are tight.As mentioned it is a PITA plus you have to get the o rings original otherwise major nightmare to install... Ivan the shaft has to be aligned towards the small bang... 
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. Last edited by proporsche; 02-12-2020 at 08:34 AM.. |
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02-12-2020, 08:26 AM
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Location: west virgnia
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Ty for all the help when i removed the valve cover i found that the gasket had a wrinkle in it wich will allow oil to enter one of those chambers you pointed out i ordered a new gasket will let you know what happens thanks also this car only has 8k orignal miles it sat for 20 years
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02-13-2020, 04:38 AM
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sounds good, great 930....now it is time to put some serious miles and enjoy it....
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1985 911 with original 501 587 miles...807 226 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. Last edited by proporsche; 02-13-2020 at 02:09 PM.. |
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02-13-2020, 07:09 AM
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Still here
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Quote:
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02-13-2020, 11:43 AM
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Black Label
