Crank pulley leaking oil

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John Alves
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Crank pulley leaking oil

Post by John Alves » Thu Feb 27, 2020 4:15 pm

Ive noticed on my 1500 SP that there is an oil leak out of the crank pulley, at first I noticed oil on my vacuum advance canister which confused me for a while, all my searches state that this should never happen as the pulley actually sucks air into the crank case and therefore oil cannot escape.
Is this true? if so, how can my one be leaking?

thanks


No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

Haans
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Re: Crank pulley leaking oil

Post by Haans » Thu Feb 27, 2020 5:36 pm

Jaa,...but. I put a vent system in see attached and all clear,.......it's got to breath! Boet


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retrovan
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Re: Crank pulley leaking oil

Post by retrovan » Thu Feb 27, 2020 10:16 pm

It has a through back spiral on it and will only leak when standing with too much oil

OR

You have an undersized pulley.

Herman
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Tony Z
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Re: Crank pulley leaking oil

Post by Tony Z » Fri Feb 28, 2020 2:53 am

it does push air into the case
if it is leaking, you have pressure problems, usually from worn rings

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Donovan D
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Re: Crank pulley leaking oil

Post by Donovan D » Fri Feb 28, 2020 6:47 am

Thanks for the post, I actually noticed oil on my dizzy and also an oil stripe on the roof of my engine bay on the George trip.
The pulley is def throwing some oil around but its not dripping out.
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Re: Crank pulley leaking oil

Post by John Alves » Fri Feb 28, 2020 12:21 pm

Tony Z wrote:
Fri Feb 28, 2020 2:53 am
it does push air into the case
if it is leaking, you have pressure problems, usually from worn rings
I tested compression on all cylinders and are all fine
No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

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John Alves
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Re: Crank pulley leaking oil

Post by John Alves » Fri Feb 28, 2020 12:23 pm

retrovan wrote:
Thu Feb 27, 2020 10:16 pm


You have an undersized pulley.

Herman
looks stock to me, what should the size be?
oil level is personally checked by me and never too full
Last edited by John Alves on Fri Feb 28, 2020 12:26 pm, edited 1 time in total.
No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

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John Alves
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Re: Crank pulley leaking oil

Post by John Alves » Fri Feb 28, 2020 12:24 pm

Haans wrote:
Thu Feb 27, 2020 5:36 pm
Jaa,...but. I put a vent system in see attached and all clear,.......it's got to breath! Boet


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Haans
your vent system is not clear from pics, elaborate please
No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

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John Alves
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Re: Crank pulley leaking oil

Post by John Alves » Fri Feb 28, 2020 12:27 pm

Donovan D wrote:
Fri Feb 28, 2020 6:47 am
Thanks for the post, I actually noticed oil on my dizzy and also an oil stripe on the roof of my engine bay on the George trip.
The pulley is def throwing some oil around but its not dripping out.
exactly my problem
No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

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Re: Crank pulley leaking oil

Post by Haans » Fri Feb 28, 2020 12:55 pm

Vents fitted to tappet cover,...see pic then pipe is relayed up to the EMPI collector box above the engine shroud also vent from altenator pedastal to box.
I think you need to check the little "baffle" in between the pedestal and the crank case,.....could be blocked.

I firmly believe in my contraption,....not expensive !

Talk to me if you need more clarity

Haans

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Re: Crank pulley leaking oil

Post by Haans » Fri Feb 28, 2020 1:17 pm

See this
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Haans

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Re: Crank pulley leaking oil

Post by Donovan D » Fri Feb 28, 2020 1:34 pm

Haans wrote:
Fri Feb 28, 2020 1:17 pm
See this
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Haans
What size motor are you running, I just have a 1600 dual carbs...but oversized pulley.
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retrovan
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Re: Crank pulley leaking oil

Post by retrovan » Fri Feb 28, 2020 10:25 pm

John Alves wrote:
Fri Feb 28, 2020 12:23 pm
retrovan wrote:
Thu Feb 27, 2020 10:16 pm


You have an undersized pulley.

Herman
looks stock to me, what should the size be?
oil level is personally checked by me and never too full
You would have to take the pulley off and measure both, the manual gives a tolerance allowed.

Due to wear your pulley could be worn or an undersized after market pulley has been fitted.

Herman
1952 Split Beetle 1835cc (Azure Blue)
1968 Fastback 2Lt.type4( Red)
1972 Low Light Bay Panel Van 2Lt type 4(White)
1975 Fleetline Panel Van 1914cc (Aqua Blue/White)
2019 MeFusco Beetle Truck

Haans
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Re: Crank pulley leaking oil

Post by Haans » Sat Feb 29, 2020 2:23 pm

Std sp 1600 engine,.....but I believe the case pressure buildup is too much to go via the std vent in the pedestal,..hence the breathing space via the tappet covers as well!
Traveled back from George in a "spirited" fashion with an anglia estate on my arse !......and the engine is bone dry!
Got it from FFR in CT

Check pulley sizing as per Herman,....if your issue started not long ago ,.......check the vent under pedestal as mentioned
Haans


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John Alves
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Re: Crank pulley leaking oil

Post by John Alves » Sun Mar 01, 2020 12:27 pm

could over heating also cause this?
No sense being pessimistic. It wouldn't work anyway.

1958 1600 TP Karmann Ghia
1968 1600 TP Beamish buggy
1968 1500 SP Beetle

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