COT o-rings

[slickster]

So I got a used cot from spectragod installed it and 6 months later I got air in the system (amen nothing happened) so I was burping the system and found that there's no o-ring on the cot cap!. made 3 trips to the flaps and the rings won't seal right. Called the dealer they don't even know what I'm talking about !. So what's the point to my story watch your rings a cooling system is nothing to play with. And does anyone know where I can find this ring

[RacerX]

I found that you have to file the sharp edge inside the receiving end of the plug or it literally cuts the O rings in half. I bought a big container of many different sizes of Viton O-rings at harbor freight for cheap money.

[cougar9150]

I found that you have to file the sharp edge inside the receiving end of the plug or it literally cuts the O rings in half. I bought a big container of many different sizes of Viton O-rings at harbor freight for cheap money.

Did the same when I pulled mine apart. Leak free for about 10k now and no issues with air getting into the system..

Was like $5-10 for the kit vs the $20-30 from my local stealership.

Sent from my SPH-D710 using Tapatalk

[babbage]

I bought 2 o rings for my COT (COT to HEADS) at Ford dealer for like $6

[burt ragio]

I have had to cot cap of a few times I have never noticed a rubber o ring. Are you talking about the cap with the allen head ?

[RacerX]

I have had to cot cap of a few times I have never noticed a rubber o ring. Are you talking about the cap with the allen head ?
Yes, the COT fill plug. There's a small O-ring on that, an O-ring on each leg that goes into the heads and two O-rings when you pull the COT apart into two seperate pieces. Most people don't know that the COT is actually two pieces. ;)

[slickster]

I have had to cot cap of a few times I have never noticed a rubber o ring. Are you talking about the cap with the allen head ?

Yes the cot coolant cap. There's a o-ring for every end that the cot connects to

[slickster]

I found that you have to file the sharp edge inside the receiving end of the plug or it literally cuts the O rings in half. I bought a big container of many different sizes of Viton O-rings at harbor freight for cheap money.

I guess this pack you got replaced all cot rings?

[RacerX]

I only needed to replace the fill plug o ring, but, figured I may as well get a random assortment for the price. http://www.harborfreight.com/205-piece-hnbr-o-ring-kit-67644.html

I have a new Ford 03/04 termi upper rebuild kit that has all the gaskets and rings for heads, Eaton parts, coolant, etc.

[Baconbit]

I have the ford part numbers for the COT o rings at home. When I get off work I will post it.

[Baconbit]

#391533-s100 i believe that is the correct part number for the crossover tube o-rings.

[clintons4]

these are the other ones the COT uses

391533-S100

[slickster]

Thanks erbody.

[blazen71]

http://www.mercurymarauder.net/forums/showthread.php?t=62175

[massacre]

I decided to end my COT fill cap woes and went with one of these:

http://forums.corral.net/forums/svt-dohc/1279513-got-bored-solved-problem.html

It moves the O-ring deeper, eliminating the edges cutting the O-ring or other fitment issues.

[RacerX]

AH HA! Thanks Rob! Been looking for him again. Thought I had it bookmarked. Just put in an order. :beer:


http://i4.photobucket.com/albums/y125/Toybreaker/Fabricated%20items%20for%20sal e/crossoverplug.jpg

[guspech750]

I decided to end my COT fill cap woes and went with one of these:

http://forums.corral.net/forums/svt-dohc/1279513-got-bored-solved-problem.html

It moves the O-ring deeper, eliminating the edges cutting the O-ring or other fitment issues.

For something so simple. It is bad ass. That is going to be on my car too. Thanks for posting that link!!


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[massacre]

Awesome always glad to help out!