[Gmecm] Off topic - rear main seal packing

[David Allen]

  THANK YOU That is just what I needed.  Will call around and see what I can 
find.  This engine has leaked slightly from the rear seal since it was new. 
When the car was new, GM said they would install a reman engine to fix this 
leak.  My dad said he would live with the leak instead of having his car 
dismantled to this degree when it was new.
  Good move; this engine lasted 370,000 miles before it needed any major 
service.  The intake gaskets leaked water into #5 so I pulled it down for a 
rebuild.
  Thanks,
David

----- Original Message ----- 
From: "Dave Mumert" <dmumert at telusplanet.net>
To: <gmecm at diy-efi.org>
Sent: Saturday, March 17, 2007 5:18 PM
Subject: Re: [Gmecm] Off topic - rear main seal packing


> Hi David
>
> I can't help you with the torque issue but here is a site that list 
> alternative seals for the 231
> http://rebuiltautoengines.com/pontiac-articles.html
>
> Check about half way down the page
>
> Here is a copy of the pertinent line
> Engine to       Detroit   Enginetech     FM            ROL Victor 
> Actual
> Be repaired Application
>
> Buick 231     17200      S-1389       BS-40613     RS-29470    JV-742-V 
> Jeep 225
>
> Good Luck
>
> Dave
>
>
> ----- Original Message ----- 
> From: "David Allen" <davida1 at hiwaay.net>
> To: "GM-ECM" <gmecm at diy-efi.org>
> Sent: Saturday, March 17, 2007 3:57 PM
> Subject: [Gmecm] Off topic - rear main seal packing
>
>
>>
>>
>>  Hey here's an off-topic post for ya!  I am assembling a Buick 231 V6 
>> which has the "rope type" rear main seal.  All the other engines I've 
>> assembled have been equipped with a lip-style oil seal.  This rope type 
>> seal puts a serious bind on the crankshaft.  It takes about 30 lb-ft of 
>> torque to rotate the crankshaft with only the main bearings and rear main 
>> seal installed.
>>  With the seal packing not installed, and the mains torqued the crank 
>> will rotate freely.  It's the packing causing the drag.  Is this normal, 
>> or is there a problem with the amount of packing I have installed? The 
>> instructions say to push the packing in the groove with a socket and 
>> shave it flush with the cap and block.  I did it this way and everything 
>> looks good and went toghether smoothly.
>>  Most older engines had the rope-type seal you guys may be able to tell 
>> me if this is supposed to cause this much drag?
>>  Thanks in advance!
>> David
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