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re: TR3 Rear Oil Seal Conversion

To: triumphs@autox.team.net
Subject: re: TR3 Rear Oil Seal Conversion
From: CarlSereda@aol.com
Date: Thu, 26 Sep 2002 16:41:01 EDT
Rob,

Interesting point about aftermarket TR rear seal.

I hope your new TRF instructions meant to drill two extra drain holes near 
the existing ones already there in the rear cap for added drain capacity and 
not to drill into main bearing shells! 
Adding two more drains to supplement existing ones would have no effect on 
oil pressure circuit or oil pressure at your bearing but would allow oil 
seepage from rear main bearing to fall into pan faster - perhaps that's what 
instructions meant about reducing oil pressure at rear seal. There are two 
drain holes there already - the first one is big diameter with a tube insert 
aimed toward pan to drain majority of oil from bearing seep, the second drain 
hole, quite narrow -  collects oil that gets past first lip of aluminum seal 
and routes it to oil pan as well. I would think drilling the two extra holes 
near the existing narrower drain hole would be most logical.
Please keep us up to date on this topic.

Carl
'63 TR4 since '74
---------
Has anybody fit the Land Rover conversion rear oil seal?  I just bought one
from TRF and the "Revised Instructions" call for drilling two extra 3/8 inch
holes in the bottom of the rear main cap. This is supposed to relieve
unnecessary oil pressure from the back of the seal.  I'm not so sure this is a
good idea as it might starve the rear main of oil.  Any comments? b Rob

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