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08-24-2012, 08:10 PM | #1 |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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O-ring size help please
How to find the exact size o-ring for my transmission dipstick tube (72 K20)?
The one I removed seems quite new (I paid a shop to replace it a few years ago), but is leaking -- so it may be the wrong one. Comparing by size, it seems to be a #112, which is 11/16" OD x 1/2" ID x 3/32" thick. It seemed to fit the tube properly, but it was leaking. I have read that some brands are a bit thicker than others even though they are listed as the same size. Unfortunately my local NAPA has no o-rings, and the ones at Ace hardware (my only other choice) look exactly the same size as my old one. Any help would be appreciated! Thanks...
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
08-24-2012, 08:16 PM | #2 |
Registered User
Join Date: Jul 2012
Location: AZ
Posts: 125
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Re: O-ring size help please
I don't know the size but I believe this was the one I just bought for mine.
http://www.oreillyauto.com/site/c/de...smission+seals Did you get the bolt off finally? did you get it from the inside?? |
08-24-2012, 08:31 PM | #3 |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
|
Re: O-ring size help please
Yup.... I'll post details in the other thread.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
08-24-2012, 09:10 PM | #4 | |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
|
Re: O-ring size help please
Quote:
Just as importantly... it doesn't leak, does it?
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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08-24-2012, 09:26 PM | #5 |
Registered User
Join Date: Mar 2011
Location: Brandon,Iowa
Posts: 391
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Re: O-ring size help please
I'm thinking that some of the automatics had a shouldered sleeve instead of an o ring.
I don't recall the applications but do remember changing a few of them. Might be something to check into. |
08-24-2012, 09:59 PM | #6 | |
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
|
Re: O-ring size help please
Quote:
As to o-ring size, I found this thread http://www.stevesnovasite.com/forums...d.php?t=200111 which indicates the correct size is a #113, with 3/4" OD, 9/16" ID, and 3/32" thickness. The one I removed appears to be #112, with 11/16" OD, 1/2" ID, and 3/32" thickness. I have been unable to locate the thicker Danco brand o-rings mentioned in the above link.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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