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Re: [GMCnet] oil cooler adapter gasket [message #261929 is a reply to message #261874] Mon, 15 September 2014 00:07 Go to previous messageGo to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
Senior Member
Richard,

I checked Parts Book 78Z / Section 8 Engine / Page 8-12 and found the bolts used to bolt that adapter to the block:

P/N 9427321 BOLT-oil filter to-block (3/8 - 16 x 1) (300M)
P/N: 433114 Bolt - oil filter to block

I've been playing with that adapter for the past several days and I'd say the part the bolts go through is 3/8" thick, that means
the 1" long bolts will extend 5/8" above the adapter. Unfortunately the second bolt length is unlisted but I would bet dollars to
donuts it would be near as dammit.

I think the bolts that hold this adapter to the block are in the zip lock bag and I'll check all this tomorrow.

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428


-----Original Message-----
From: RJW

Well I still have a leak, but it isn't the adapter gasket.

While I thought I had fixed the leak, it actually got worse during a 600 mile trip last week. I ended up putting a gallon of oil in
to keep the level up. it was smoking as oil dripped on the mufflers and on the ground when stopped.

Turns out the leak is the from the "filter stand to block gasket". I am sure I put the right one in when I replaced the engine
35,000 miles ago. I was told off line by one of our most respected engine gurus that I should consider the gasket next to he block.
Turns out on visual inspection while running the engine that is where the leak is. I tried to tighten the 3 mounting bolts and that
didn't help.

I am now faced with having to replace that gasket. The problem is the exhaust manifold is right in front and one of the bolts looks
like it would hit the manifold on the way out.

Has any one replaced the "filter stand to block gasket" without removing the manifold on a 455? It looks like it would be easy with
the manifold off, but I don't want to open up another can of worms by remvoing a well sealed exhaust manifold (broken bolts etc.).
--
Richard

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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