[Gmecm] Off topic - rear main seal packing

[Dave Mumert]

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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