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Re: [GMCnet] Dorman 917-036 was Re: oil cooler adapter gasket [message #260733 is a reply to message #260716] Tue, 02 September 2014 17:02 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
Matt,

As promised I called Parker Hannifin today and spoke to an Applications Engineer. I gave him he ID / OD / Depth of the groove in the oil cooler adapter and he came up with part number 2-231.

EDITED 11/07/2014 - THE CORRECT PART NUMBER IS 2-230, THE OD OF 2-231 WAS TOO LARGE!!

He noted that it would fill 70% of the groove and have 18% compression. He
suggested when I call one of the PH distributors to tell them I wanted a general purpose O-ring compatible with engine oil at 260° F. He noted that Viton would be better than silicone.

I then called a PH distributor here in Houston and their min order was $10.00 so I ordered 10 of them for $12.12. The distributor is on the other side of Houston so I told him to ship them.

When they arrive I will check them in the oil cooler adapter I have here and photograph the result.

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

-----Original Message-----
From: Matt Colie

To those who care.

I got a box today. They are not O-rings to an O-ring guy. They are a round gasket. So???
The difference is in how an O-ring works. The near circular cross section of material trapped in a grove that it fills no more than
80% of and is compressed somewhere close to 25% in the clamp direction that get pushed by the internal pressure to achieve the
required seal is what makes and O-ring and O-ring.

This is different than that. These are a rectangular cross section (5*3.5mm- 0.200*0.135")with a 59mm (2.312") ID.
It appears to be a relatively hard silicone rubber. I won't know for months if I like it, because Chaumière's next lube service
will be after Chippawa Falls.

Matt

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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

[Updated on: Fri, 07 November 2014 18:33]

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