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Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- rear main seal
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rear main seal
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
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baja66
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Post Post subject: rear main seal
Posted: Fri Nov 11, 2011 01:03 AM
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okay i have a bad oil leak from the rear seal area i have a 1600cc dual port and when i pulled my freinds engine out last night he didnt have a little hole right next to the crank like mine is that post to be there???

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baja66
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Post Post subject: rear main seal
Posted: Fri Nov 11, 2011 01:06 AM
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Post Post subject: Re: rear main seal
Posted: Fri Nov 11, 2011 07:18 AM
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Thats a oil gallery to your rear main but it seems to be on the wrong half of the case.....interesting.
Hows the end play on the crankshaft before the flywheel and seals were pulled????


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baja66
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Post Post subject: Re: rear main seal
Posted: Fri Nov 11, 2011 08:18 AM
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at least 1/8 to 1/4 play, it seams to be a big hole and im loose atlleast a 1/2 a quart day

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Post Post subject: rear main seal
Posted: Fri Nov 11, 2011 09:28 PM
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That is an oil feed hole. It looks like the dowel pin holes are very elongated. Your end play should be from .0027 to .0006 in. Also if I remember there should be an o-ring between the crank and flywheel.

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Post Post subject: Re: rear main seal
Posted: Fri Nov 11, 2011 10:27 PM
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Thats the oil drain off the rear main....behind 1 & 2
Rear main seal it, shim the flywheel to specs on end play and throw it back in.


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Post Post subject: rear main seal
Posted: Fri Nov 11, 2011 10:56 PM
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Heres some shots of the case halves on my next build







Hope it shows ya alittle when it is split


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Post Post subject: Re: rear main seal
Posted: Sat Nov 12, 2011 05:22 AM
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baja66 wrote:

From the looks of this pisc that flywheel has been left loose at one time. The dowell holes are wollowed out.


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baja66
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Post Post subject: rear main seal
Posted: Sat Nov 12, 2011 07:04 AM
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wat should i do about the dowel pins???

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Post Post subject: Re: rear main seal
Posted: Sat Nov 12, 2011 07:52 AM
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Id start thinking on a brand new 8 dowel counterweight build.
Start with a dual releif case and build ya something that will run smoother and last longer then the stock four dowel....youll see feel and hear the difference and be happier in the long run.


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baja66
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Post Post subject: rear main seal
Posted: Sat Nov 12, 2011 05:46 PM
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how much money are we talking here?? can i still run this same setup for a while?? becuase i wanna do a engine swap someday

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Post Post subject: Re: rear main seal
Posted: Sat Nov 12, 2011 06:21 PM
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Start shoppin around.....kits are pretty reasonable.
Or you can end up like me. Piecing parts together every two weeks.
My current build is using a 69 counterweight 8 dowel
flywheel
rods
cima forged pistons......were taken to the machine shop and balanced.
$200 for the balance @ my shop.
The cima forged pistons run about double your cast.
Total seal rings im needing since my build will be pressurized.
Engle TC 10 cam and lifters
Long block complete with Stock Mexican heads.
Damn.....need to get me my Gene Berg sump..

Anyways how long had the motor been sitting before you tuned it????
The rubber around the oil cooler....push rod tubes and rear main just get hard and need to be replace....

And like Zyla said dont loose your flywheel
Ge


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baja66
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Post Post subject: rear main seal
Posted: Sat Nov 12, 2011 07:33 PM
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so ive had the bug for 3 weeks all i knw its got a big bore kit on and single barel solex. i dnt really have the money to drop in it for complete rebuild

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Post Post subject: rear main seal
Posted: Sat Nov 12, 2011 10:53 PM
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Keep your chin up brother
Put a new seal in shim to specs and and make sure that flywheel is torqued.
And have fun


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baja66
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Post Post subject: rear main seal
Posted: Sun Nov 13, 2011 03:07 AM
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thanks for all your help i really like this little bug and cant wait to do some upgrades how much ftlbs for the flywheel

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Post Post subject: rear main seal
Posted: Sun Nov 13, 2011 03:28 AM
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Make sure you have a flyywheel lock and torque to 235.
Remember to replace the o-ring in the flywheel on the crakshaft side.....its kinda tucked up in there.
Any specs you may need you can find @ chirco.....along with alot more info and fun stuff to buy.
Good Luck & have fun


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BugZyla.com
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Post Post subject: Re: rear main seal
Posted: Sun Nov 13, 2011 03:50 AM
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I wouldnt run the motor like that. My suggestion if you want to try to use the motor without tearing it apart is to get an 8 dowell fixture and drill 4 more holes in the crank. make sure you flatten the little burrs where the dowells wallowed the holes out, do both the crank and the flywheel.


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Post Post subject: Re: rear main seal
Posted: Sun Nov 13, 2011 04:13 AM
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That would be the IDEAL fix for the existing problem.....but ive seen some pretty bad end results from people drilling OFFhand.
My last purchase had a crankshaft that came with it like that....that crank and flywheel were definitely mated and tossed in the recycling bin together.
But anyways it would be the ideal fix if done correctly...square to the chuck in a press.


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baja66
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Post Post subject: rear main seal
Posted: Sun Nov 13, 2011 06:08 AM
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can u tern the old flywheel into a 8 hole?

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Post Post subject: Re: rear main seal
Posted: Sun Nov 13, 2011 06:54 AM
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Like Daryll said
Try Kustom1Warehouse.net part number 5004


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Post Post subject: Re: rear main seal
Posted: Sun Nov 13, 2011 07:21 AM
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baja66 wrote:
can u tern the old flywheel into a 8 hole?

Yes.


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Post Post subject: rear main seal
Posted: Mon Nov 14, 2011 07:22 AM
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217ft/lbs


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Post Post subject: rear main seal
Posted: Mon Nov 14, 2011 09:33 PM
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okay im starting to rip my hair out so i stuck the flywheel back on and torq it dwn but i have about 1/4 inch off play?? does this mean crank bearing are toasted??

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Post Post subject: rear main seal
Posted: Tue Nov 15, 2011 05:02 AM
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It might be the thrust on the rear main bearing...thats what gives you the endplay on the crank.


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Post Post subject: rear main seal
Posted: Tue Nov 15, 2011 05:08 AM
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pull the whole engine apart ??? im not a aircooled expert i do american v8s mostly

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Post Post subject: rear main seal
Posted: Tue Nov 15, 2011 05:36 AM
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Check some other resources on how to set endplay on the crankshaft....it might help you out alittle better.


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Post Post subject: rear main seal
Posted: Wed Nov 16, 2011 02:27 AM
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so did the end play and got it to about 1. 16 of a inch and then drov it down the block flywheel came off and bottom end bearing are toasted. any one got a parts engine or a complete case with cam and crank

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Post Post subject: Re: rear main seal
Posted: Wed Nov 16, 2011 08:25 AM
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Sorry to here that bro........werent you working on a possible irs conversion outta the junkyard for your 66........was there a block with that rearend ?????


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Post Post subject: rear main seal
Posted: Wed Nov 16, 2011 05:04 PM
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yea i went to get it and the tranny had a crack:( but a got a 1500cc single port for a trade for my engine with 15000 miles, i will find some dual port heads

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Post Post subject: Re: rear main seal
Posted: Fri Nov 18, 2011 04:58 AM
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Chin up and have fun..........at times it might seem alittle overwhelming !!!


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Post Post subject: Re: rear main seal
Posted: Fri Nov 18, 2011 05:28 AM
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chould be worse, ill start a build page

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Post Post subject: Re: rear main seal
Posted: Fri Nov 18, 2011 06:39 AM
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SWEET


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