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-   -   Replacing LIM gasket, posting here if I need help (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/replacing-lim-gasket-posting-here-if-i-need-help-83323/)

Snowgoat 12-13-2013 05:03 PM

Replacing LIM gasket, posting here if I need help
 
I am just going to post here if I get stuck and can't find the answer. Here we go!

bizzs 12-13-2013 08:41 PM

I did mine last week and a few things that I ran into:

1. Make sure the manifold bolts are not warped. A few of mine were messed up and when I was tightening up the manifold, they started to strip out the block. I went to local junk yard and got a few good ones.

2. Use a lot of sealant on front and back of manifold.

3. Slice heater lines at manifold and heater core instead of pulling them out. It will save time and prevent you from breaking heater core.

4. Distributor hold down bolt is a pain and watch you do not strip it. Furthermore, properly mark the distributor twice before pulling out. It seems that a lot of DYI people mess this up and cause timing problems. Place a mark before you start pulling it out, and mark it when the rotor stops moving before completely pulling it from the manifold. Upon installation, my distributor went right back in without any hicupps.

Other then that, this project its time consuming, but not too difficult. Just hope its not a freeze plug because they are a real bitch to replace.

Good luck
Bizzs

Captain Hook 12-13-2013 09:42 PM

2 Attachment(s)
Felpro MS98002T gasket set will not leak if clean up, installation, and fastener torque is done properly. Clean the threads on the bolts, and in the heads, with a tap and die. Then apply sealer to the threads:1 so the don't leak and 2 so they don't "walk out" due to the low torque.
Attachment 31508

A tip for removing the distributor is manually rotate the crankshaft clockwise, using a socket & ratchet, until the rotor points to the "6". Then remove the distributor, and DON'T move the crankshaft while the distributor is out.
Attachment 31509

After the distributor is reinstalled, (rotor lined up with the "6") check and adjust camshaft retard with a capable scan tool. The basic install of the distributor gets you in the ball park, camshaft retard fine tunes it. Spec is zero degrees plus or minus 2 degrees. Adjustment is done by rotating the distributor. The adjustment aligns the camshaft position sensor and does not affect ignition timing, but it will greatly affect engine performance and fuel mileage if it's out of spec.... and NO check engine light alerting you of a problem ;)

Snowgoat 12-14-2013 09:18 AM

Thanks for the tips guys, its been going good so far but I've just done the easy stuff to get into it pretty much. Definitely am going with the Felpro.

Snowgoat 12-14-2013 11:38 AM

I'm having trouble getting the main power line out of the way. Its connected to the fuse box and I cant figure out how to remove it.

Snowgoat 12-14-2013 01:12 PM

This ac bracket is giving me some troubles now too. It budges about 1/4 inch but I cant find the last thing holding it.

Captain Hook 12-14-2013 01:22 PM

Electrical to the fuse panel doesn't have to be disconnected. Just swing the harnesses above the plenum out of the way to remove the plenum & manifold.

Un bolt the AC compressor and move it aside, don't need to discharge the AC. PS bracket... one nut near the forward end of the exhaust manifold holding the PS bracket, (neatly tucked out of sight). Don't need to remove it, just loosen it and slide the bracket & pump assembly up and off the stud.

Snowgoat 12-16-2013 12:24 PM

Almost ready to get done here, when I took off the intake manifold the gaskets just crumbled everywhere. I got out as much grit as possible so I really hope its enough.

bizzs 12-16-2013 02:13 PM

If you do not have that manifold clean, it will leak. Make sure that you stick paper towels down in the blocks ports so none of the old gasket debris drop into the motor. I actually used a light wired wheel on a drill and it did a nice job. Additionally, use a lot of sealant on front and back of manifold, or a leak could occur there too.

bizzs

12-16-2013 04:19 PM

^^^++++Don't put that thing back together unless the mating surfaces shine. bizzs is like a million times right. That "really hope it's enough" I think scares bizzs and me.


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