leaking crank pulley

My engine leaks behind the crank pulley. I don't think it's excessive back pressure, but rather the cheap aluminum pulley I have. There is no oil coming out of the dipstick and all the breathing stuff is setup right. Does it sound feasible that a junk pulley could cause a pretty decent leak (but only at high speeds)? I've had the problem for a couple months now and it is slowly getting worse. I find that if I only drive like 55 it doesn't create much of a mess. It's only when I am travelling at around 70 that it starts to become a nuisance. Also, what is a good kind of pulley to replace it with? Thanks.

Reply to
Ben Boyle
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yep

stock...

------------------- Chris Perdue "I'm ever so thankful for the Internet; it has allowed me to keep a finger in the pie and to make some small contribution to those younger who will carry the air-cooled legend forward" Jim Mais Feb. 2004

Reply to
Chris Perdue

Reply to
Ben Boyle

not sure ben...really....email john and ask...he is a straight shooter...if it isn't as good as the stock german he will tell you...he won't sell you something just to make a sale...i have an old "empi" pulley that i have moved from engine to engine over the years...it has never created a problem....i do however, normally open up the oil return path wheni have an engine case opened up...since i have always bought bugs that *needed* the engine opened up this may be why i have never had a weep problem back there...

------------------- Chris Perdue "I'm ever so thankful for the Internet; it has allowed me to keep a finger in the pie and to make some small contribution to those younger who will carry the air-cooled legend forward" Jim Mais Feb. 2004

Reply to
Chris Perdue

Reply to
Braukuche

pressure, but rather the cheap aluminum

breathing stuff is setup right. Does it sound

speeds)? I've had the problem for a

like 55 it doesn't create much of a mess.

nuisance. Also, what is a good kind of pulley to

Do you have a full flow oil filter? Pump cover with an outlet? Hose fitting on pump cover? The brass fittings are threaded into the cover, and should be done so with teflon tape wrapped around teh threads to provide good sealing. Otherwise oil might/will seep through the threads. Air turbulence under the engine will then make the oil spread out everywhere, including up the pulley tin.

Jan

Reply to
Jan

pressure, but rather the cheap aluminum

breathing stuff is setup right. Does it sound

high speeds)? I've had the problem for a

drive like 55 it doesn't create much of a mess.

nuisance. Also, what is a good kind of pulley to

Reply to
Ben Boyle

Dan, not sure what the air quality is where you live, but i dont' see how you could "wear" a crank pulley and cause a leak...there is no contact on the snout(which has a spiral that "pumps" air into the engine case), unless you are driving in some pretty gritty air conditions...

------------------- Chris Perdue "I'm ever so thankful for the Internet; it has allowed me to keep a finger in the pie and to make some small contribution to those younger who will carry the air-cooled legend forward" Jim Mais Feb. 2004

Reply to
Chris Perdue

Welcome to my world. San Diego is as dusty a town as you can hope not to find. As for worn pulleys I had a situation recently where I had a copious leak from the front of the engine, form behind the pulley, which was caused by the pulley. I deduced that by replacing the old pulley with a another the leak stopped. The grooves in the pulley were clean, so I assumed that there must be some where perhaps where the pulley mounts onto the crank? In any case some sort of tolerance had to be off as oil was escaping from the pulley and ceased after replacement. Any ideas??

--Dan E

Reply to
Braukuche

no ideas...was it a stock pulley....i've never had one leak...(even with aftermarket pulley as i said in an earlier post)...

------------------- Chris Perdue "I'm ever so thankful for the Internet; it has allowed me to keep a finger in the pie and to make some small contribution to those younger who will carry the air-cooled legend forward" Jim Mais Feb. 2004

Reply to
Chris Perdue

Yeah, it was a stock pulley. I think someone over a the Karmann Ghia email list told me it could be a "worn pulley" and suggested replacing it. It did come off rather easy indicating to me that there must have been some wear were it mated to the crank.

--Dan E

Reply to
Braukuche

Have to ask. Would not the seal also be suspect if there is an oilleak behind the pulley??

-- the Grokdoc Tom Malmevik all that groks is god

67 Baja "marti"
Reply to
Thomas Malmevik

there is no seal on the pulley end of the crank on an aircooled type 1 engine...unless a "sand seal" has been added(they also use a special machined pulley)

------------------- Chris Perdue "I'm ever so thankful for the Internet; it has allowed me to keep a finger in the pie and to make some small contribution to those younger who will carry the air-cooled legend forward" Jim Mais Feb. 2004

Reply to
Chris Perdue

Bah! Who needs a sand-seal pulley!?!?

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Reply to
Shaggie

nice pic Travis , I have a customer tring to buy a house so he is selling his

70 baja for $1500 nice shape runs good just needs a camo paint job.

Mario

Reply to
Kafertoys

.................He better not leave it at your shop or he'll be renting for a long time.

Reply to
Tim Rogers

LOL timmy its you that needs to be the comedian

if f not try growing up.

Mario

Reply to
Kafertoys

.............If you'll stop lying and stealing, I'll get to work on becoming more mature. At 54, I'm at about the right age for it.

Reply to
Tim Rogers

No no no, way too early. I plan on skipping that part entirely.

Grow OLD, yes. Grow UP, no way! Where's the fun in that?

Jan

Reply to
Jan

I with you Jan, I like playing with cars for a lining.

Mario

Reply to
Kafertoys

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