Date: Wed, 3 Oct 2007 10:30:34 -0500
Reply-To: John Rodgers <inua@CHARTER.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: John Rodgers <inua@CHARTER.NET>
Subject: Re: Oil Leak - 2.1L WBX - Manual Tranny
In-Reply-To: <019301c805d5$b7dcc150$6601a8c0@valuedba5d11bc>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Bob,
This engine had a complete rebuild 75,000 miles back. All new everything
engine wise - cylinders, rings, pistons, bearings, seals, water pump,
oil pump, distributor, camshaft. Heads rebuilt with new parts. Used the
existing case, crank and rods. The engine has performed well. BUT, I had
to replace the front seal (tranny end) at about 500 miles. It' has been
fine since, until recently.
Leaking oil means seals somewhere. Just why remains to be seen, I guess.
If the case is being pressurized, then that needs to be checked out
thoroughly. But I can see that all this is going to require pulling the
engine to get at. If I have to do that, I'm going to plan some serious
maintenance while the engine is out. Seals, fly wheel and clutch disc,
rebuild the shifter linkage front to back. Maybe replace the slave
clutch cylinder while it's easily accessible. It has never been replaced
I don't believe.
Thanks for the info.
John Rodgers
88 GL Driver
Bob Donalds wrote:
> John
> Oil leaks can have many causes too much crank case pressure tops the
> list on
> newer engine with rings that have yet to seat or that have been pushed to
> hard to soon. The other problems are thing like collapsed crank vent
> tubes
> the 2.1 engines have a restrictor in the vent line to reduce the air
> intake
> from the crank vent. If it is leaking from both front and rear crank
> seals
> then increased internal case pressure sounds likley
>
> By products of combustion and newer oil blends I'm thinking synthetics
> here
> can harden seals much faster than older products and leak where other
> wont.
> Wash the beast down and get under it or place a cardboard to see the
> offending spot. Fuel mixture can add to the crank case pressure and
> none of
> the seals are meant to hold back gas. Gas in the oil is more common in
> engines what have had short trips and repeated starting just to move it
> around the yard.
>
> Did you rering the engine or put in new cylinders and pistons
>
> I have been also encouraging my customers to have the fuel injectors
> tested
> and rebuilt when installing a B Bob engine. The flow charts before and
> after
> make it clear to me the value of matched flow rates and spray patterns.
>
>
>
> Bob
>
> ----- Original Message -----
> From: "John Rodgers" <inua@CHARTER.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Wednesday, October 03, 2007 2:15 AM
> Subject: Oil Leak - 2.1L WBX - Manual Tranny
>
>
>> My machine is leaking oil. It has for a while, it hasn't been to bad,
>> but it's gotten worse over time. Yesterday I put it on the rack to see
>> if I could get an idea as to what is going on.
>>
>> The whole bottom of the engine was wet. It was heavily wetted at both
>> front and rear of the engine.
>>
>> Question: Where might all this oil be coming from? Front and rear seals?
>> or is there something up on the sides somewhere that might produce oil
>> leaks. Can't really see in there. If it is seals - front and rear
>> (engine now has about 75,000 mi since it was overhauled completely}-
>> what does this indicate - being leaking seals on both ends? It it likely
>> that just replacing seals will take care of the problem for the next
>> 75,000 miles, or is something more sinister at work here.
>>
>> Any input would be appreciated.
>>
>> Thanks,
>>
>> Regards,
>>
>> John Rodgers
>> 88 GL driver
>
>
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