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Username Post: Rear Main Seal        (Topic#347025)
46Stylemaster 
Forum Newbie
Posts: 11

Reg: 01-04-17
09-07-17 07:03 AM - Post#2706909    

Just put a 58 235 in my 46 Stylemaster
..and dripping oil from rear, 1 every 7 seconds
Is it possible/do-able to replace seal in-place?
and...any step-by-steps?

...has to be on here, but by search didnt work...



Edited by 46Stylemaster on 09-07-17 07:03 AM. Reason for edit: No reason given.

 
raycow 
Honored Member
Posts: 26530
raycow
Loc: San Francisco, CA
Reg: 11-26-02
09-07-17 10:21 AM - Post#2706927    
    In response to 46Stylemaster

Yes, you can do the job with the engine in place. A 58 engine should be already machined to accept a neoprene (instead of rope) seal, which is much easier to install. The hardest part of the job is getting the top half of the old seal out if it is the rope type. I believe the procedure is covered in the factory shop manual, which you should get a copy of if you are going to be doing any work on the engine. The 58 engine has quite a lot of differences when compared with your original 216.

To be sure if the crankshaft seal is leaking, look for a lot of oil on the front face of the flywheel. If you don't see much oil there, look for a leak anywhere else around the rear of the engine before you take off the pan. For example, the valve cover or side cover can leak back there and the oil will run down the bellhousing. There is also a plug at the rear of the camshaft bore which can leak. This usually happens only if some ham-fisted PO screwed up while removing or installing the camshaft gear with the cam still in the engine and knocked the plug loose. It looks like a shallow freeze plug and you need to remove the flywheel and bellhousing just to be able to see it. If you are lucky, this won't be the cause of your problem.

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
46Stylemaster 
Forum Newbie
Posts: 11

Reg: 01-04-17
09-08-17 05:51 AM - Post#2706994    
    In response to raycow

thanks

Well...motor/bell/trans already in...

so you think i should pull clutch out 1st to check fly wheel ?



 
raycow 
Honored Member
Posts: 26530
raycow
Loc: San Francisco, CA
Reg: 11-26-02
09-08-17 01:32 PM - Post#2707055    
    In response to 46Stylemaster

Pulling the clutch isn't necessary. All you need to see is the FRONT side of the flywheel, so just remove the bellhousing bottom cover.

Ray


There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
Ray P W 
Contributor
Posts: 323

Reg: 09-30-15
09-08-17 08:12 PM - Post#2707112    
    In response to raycow

46,

Here's a discussion on the subject that may help:

https://www.stovebolt.com/ubbthreads/ubbthreads .ph...

I have a '71 Dodge van that I bought new with a small block Mopar V-8 that originally had a rope seal. I have replaced that rope seal with the engine still in the van a couple of times. It's easily doable and, personally, I have found rope seals to work better than neoprene. The crux is perfect trimming of the mating surfaces of the rope seal ends.

Some old school items like rope main seals and cork valve cover and intake manifold end gaskets outperform the "modern" stuff for us old guys.

Ray W



 
46Stylemaster 
Forum Newbie
Posts: 11

Reg: 01-04-17
09-09-17 07:45 AM - Post#2707145    
    In response to Ray P W

Thats right,
the one facing ...FRONT OF CAR



 
46Stylemaster 
Forum Newbie
Posts: 11

Reg: 01-04-17
09-12-17 07:28 AM - Post#2707472    
    In response to 46Stylemaster

well got my !@$ under car ...
and looks like it must be sump...both front & rear

...cant add pics to a msg ??



 
Keith_Knox 
Moderator and "15th Year" Gold Supporting Member
Posts: 5588
Keith_Knox
Age: 76
Loc: Napa, Ca USA
Reg: 04-02-00
09-12-17 08:02 AM - Post#2707477    
    In response to 46Stylemaster

http://www.chevytalk.org/fusionbb/showtopic.php?ti... Tony
Also if you become a supporting member you can post direct from your computer.
http://www.chevytalk.org/fusionbb/showtopic.php?ti... tony both ways to post pictures


1948 Chevy Fleetmaster Coupe Purchased 6/2010. Stock with rebuilt 52 216 installed May 1966
1962 Ranchero Purchased 4/2017 221 V8 Automatic
1996 Chevy Monte Carlo Donated 6/16
2013 F150 Crew Cab


 
Gene_Schneider 
Ultra Senior Member
Posts: 12020

Loc: Wisconsin..USA
Reg: 09-27-02
09-12-17 07:21 PM - Post#2707522    
    In response to Keith_Knox

If it is the sump (oil pan) you can drop the pan and replace the gaskets CORRECTLY.

ChevGene 1934 Master sedan 1939 Master DeLuxe Town Sedan 1950 Styline DeLuxe Power Glide 1957 Nomad 283 PG 1963 Corvair Convertible


 
Ray P W 
Contributor
Posts: 323

Reg: 09-30-15
09-13-17 08:14 PM - Post#2707615    
    In response to 46Stylemaster

46,

Right here on Chevy Talk is an excellent illustrated discussion on the subject:

http://garage.grumpysperformance.com/index.php?thr...

The poster, Grumpyvette, really sets the standard of expertise in these matters. His posts are very detailed, illustrations are abundant and sources of the information are given credit.

Also, he avoids unsubstantiated opinions.

Ray W



 
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