I do not understand these seals. Help!

[Blk00ss]

In the middle os this valley pan, intake manifold gasket project. Thought I'd also change the coolant bypass seals (see pic) while I was in here. When I broke the coolant pipe loose, I was expecting to this shim with built in seal (like the pic shows). But I don't. The pipe connection is one piece. That one piece bolts directly to the head wihtout this shim and seal in between it. It doesn't, from the factory have these shims with built in O rings between it and the head. Am I basically adding these between the coolant pipe and head making the coolant pipe sit just a bit hight than OEM? Am I mising something??

 

[Doubeleive]

In the middle os this valley pan, intake manifold gasket project. Thought I'd also change the coolant bypass seals (see pic) while I was in here. When I broke the coolant pipe loose, I was expecting to this shim with built in seal (like the pic shows). But I don't. The pipe connection is one piece. That one piece bolts directly to the head wihtout this shim and seal in between it. It doesn't, from the factory have these shims with built in O rings between it and the head. Am I basically adding these between the coolant pipe and head making the coolant pipe sit just a bit hight than OEM? Am I mising something??


View attachment 394498

not sure if those will work or not, gm no longer makes these
what you probably need is

Dorman 626-543​

 

[Blk00ss]

not sure if those will work or not, gm no longer makes these
what you probably need is

Dorman 626-543​

well that sucks. I have Dorman part 56390 and was told by a few these are the coolant by pass seals. I even started a thread asking a while back on here. so you're telling me these types of seals (PN 56390 or Fel Pro ES73027) don't actually work between the pipe (see pic) and the head?

What about the rear side? Would what I have work?

Coolant/ Steam Pipe Seals

My parts are starting to trickle in to do valley pan gasket, knock sensor seals, knock sensors and of course intake manifold gaskets on our '05 Tahoe. After much reading and research, I guess its common to disconnect the coolant crossover pipe and re seal them? I'm seeing these (link below). I...

www.tahoeyukonforum.com

 

[nonickatall]

the principle is like that of an air conditioning line. This seal is pushed with the sealing part, i.e. the black round point, over the extension on the pipe and the screw goes through the other hole.

 

[Blk00ss]

the principle is like that of an air conditioning line. This seal is pushed with the sealing part, i.e. the black round point, over the extension on the pipe and the screw goes through the other hole.

So the seals I bought do indeed go between the pipe and the head? I ask because from the factory, the seal is built into the pipe. Its not two pieces. If I use these seals, I'm basically making it two pieces. I'm wedging an aluminium shim with built in seal between the pipe and head...its not currently that way. That's my question.

 

[nonickatall]

i know this type of pipe from air conditioners. and since there are two different types of gaskets. One a normal O-Ring which is slipped over the tube and this type of seals that come as sheet metal with a molded rubber seal. From the picture they fit to this pipe
As I said, you slide the rubberized part over the pipe and the screw goes through the other hole.

 

[Doubeleive]

So the seals I bought do indeed go between the pipe and the head? I ask because from the factory, the seal is built into the pipe. Its not two pieces. If I use these seals, I'm basically making it two pieces. I'm wedging an aluminium shim with built in seal between the pipe and head...its not currently that way. That's my question.

it appears that it should work, but I just bought the whole new dorman kit myself because my original was leaking at that seal
those appear to have seals on both sides so it "should" be fine

 

[89Suburban]

well that sucks. I have Dorman part 56390 and was told by a few these are the coolant by pass seals. I even started a thread asking a while back on here. so you're telling me these types of seals (PN 56390 or Fel Pro ES73027) don't actually work between the pipe (see pic) and the head?

What about the rear side? Would what I have work?

Coolant/ Steam Pipe Seals

My parts are starting to trickle in to do valley pan gasket, knock sensor seals, knock sensors and of course intake manifold gaskets on our '05 Tahoe. After much reading and research, I guess its common to disconnect the coolant crossover pipe and re seal them? I'm seeing these (link below). I...

www.tahoeyukonforum.com

View attachment 394499

Is this your actual pipe? DO you have a pic of the bottom side so we can see it?

 

[Blk00ss]

I replaced all 4 with the seals I bought. I'm not comfortbale with it, but I did find a YT video of a guy also doing a 5.3 valley pan project. he thought it was odd as well, but he used them. He never came back and said whether or not they worked LOL. Fingers crossed!!!

 

[rockola1971]

I replaced all 4 with the seals I bought. I'm not comfortbale with it, but I did find a YT video of a guy also doing a 5.3 valley pan project. he thought it was odd as well, but he used them. He never came back and said whether or not they worked LOL. Fingers crossed!!!

They will work fine.