Where do you apply RTV to LIM lower gaskets? (pic) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-07-2006, 02:11 AM   #1
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Default Where do you apply RTV to LIM lower gaskets? (pic)

Could someone show me exactly where to apply the RTV on these GM LIM gaskets and seals?

The orientation is: You are looking from above, and the TB is to the left. (I think I've got it correct)

Many thanks!!

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Old 10-07-2006, 03:34 AM   #2
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The critical spots are right where each of those orange strips meets the corners of the aluminum pieces. You can also lay a bead of RTV along the entire length of those strips for extra insurance. But like I said, make sure you get the corners where the orange strips meet the aluminum gasket frames.
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Old 10-07-2006, 01:55 PM   #3
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Thanks!! I see right where you mean.

I can see now where one of the corners on the original setup was leaking right there.
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Old 10-07-2006, 02:43 PM   #4
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Quote:
Originally Posted by Slug
Thanks!! I see right where you mean.

I can see now where one of the corners on the original setup was leaking right there.
This is how I do them.... I apply a small dab at all four corners where the head and block meet, then I run a bead across the bottom of the end seals and seat them, then another little dab at the four corners, set the manifold gaskets in place and apply a small dab at the four corners once again... Should stay leak free for a very long time

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Old 10-07-2006, 06:15 PM   #5
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ok, so the first two sets of dabs are on the block/head joint. Then you put the gaskets on. The third set of dabs--do you extend them onto the manifold gaskets, or just right up to?

Thanks!
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Old 10-08-2006, 12:41 PM   #6
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Quote:
Originally Posted by Slug
ok, so the first two sets of dabs are on the block/head joint. Then you put the gaskets on. The third set of dabs--do you extend them onto the manifold gaskets, or just right up to?

Thanks!
Just on the very bottom corner of the gasket where the Manifold Gaskets and end seals meet... Should keep it dry for a very long time

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Old 10-08-2006, 06:02 PM   #7
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ok

Thanks again to both you guys!
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Old 10-09-2006, 04:21 AM   #8
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No problem. That'* what we're all here for!
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Old 10-09-2006, 09:55 AM   #9
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Sorry to be late on helping, hopefully when others look this up in the future this can help.

Put gaskets on head..blob gasket maker in all 4 corners

Rubber seal in place, blob on top in all 4 corners
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Old 10-10-2006, 04:22 AM   #10
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Thanks, Boosty!

I pretty much got it right form the verbal descriptions previously--at any rate, the RTV oozed out nicely from the four corners as I torqued the LIM down.

However, I would like to use your pics in a fresh write-up on this topic. I'll be aming it at duffers like me and maybe I'll call it "Old Fart'* tips on UIM/LIM overhaul" (inspired by willwren).
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