Final Stretch - HELP!
Thread Starter
Heel & Toe
Joined: Apr 2006
Posts: 24
Likes: 0
Final Stretch - HELP!
I am in the final stretch of getting my '93 back together. New MSD is in, new plugs, wires, it starts... Yeah!!! 
I have the radiator out for cleaning and when completed the new water pump goes in and everything goes back together.
The problem is the new WP only comes with one drive shaft o-ring and I can't find a cross reference for size anywhere. I found the GM P/N but that's useless unless I want to spend $20 to get a $.37 part over nighted.
AdvanceAuto doesn't show it as a seperate part number and they said I could by one seperately if I knew the size.
Does anyone out there know what the dimensional size characteristics is of this o-ring? Why a new WP doesn't come with two of them is a real mistery.
TIA...
I have the radiator out for cleaning and when completed the new water pump goes in and everything goes back together.
The problem is the new WP only comes with one drive shaft o-ring and I can't find a cross reference for size anywhere. I found the GM P/N but that's useless unless I want to spend $20 to get a $.37 part over nighted.
AdvanceAuto doesn't show it as a seperate part number and they said I could by one seperately if I knew the size.
Does anyone out there know what the dimensional size characteristics is of this o-ring? Why a new WP doesn't come with two of them is a real mistery.
TIA...
Drifting
Joined: Jun 2004
Posts: 1,477
Likes: 87
I recently went through this on my '95, and I only remember there being one o-ring on the coupling drive shaft, but there is also that coupling seal in the timing chain cover that it goes through, that has two sides to it thats a pain to put on. (I thought the seal was the reason it only needed one o-ring)
I remember the opti having two though.
Edit: I probably have at least one laying around, I'll look tonight.
Oh and congrats, I thought I'd never get mine done!
I remember the opti having two though.
Edit: I probably have at least one laying around, I'll look tonight.
Oh and congrats, I thought I'd never get mine done!
Last edited by F1Fan; May 29, 2008 at 12:59 PM.
Thread Starter
Heel & Toe
Joined: Apr 2006
Posts: 24
Likes: 0
There are two on the '93. One goes on the drive shaft exiting the timing chain cover where the coupler slides on and the second goes onto the WP drive shaft. The ones that were on there (in both locations) were crystalized and disintigrated when I tried to remove them.
I don't think these have anything to do with "sealing" but more to do with vibration dampening and alignment of the coupler.
I could eye-ball them for size considering they are only there to take up the slop in the coupler.
I don't think these have anything to do with "sealing" but more to do with vibration dampening and alignment of the coupler.
I could eye-ball them for size considering they are only there to take up the slop in the coupler.
Drifting
Joined: Jun 2004
Posts: 1,477
Likes: 87
I guess I was just thinking of the coupler, but mine is the same as yours.
I made a good effort searching around but could only find o-rings that are on the small side, 13mm outside width. They look more like they fit the opti, but your welcome to them.
I made a good effort searching around but could only find o-rings that are on the small side, 13mm outside width. They look more like they fit the opti, but your welcome to them.
