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Old 01-19-2008, 07:27 PM   #1
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Default Porting the LIM. Got some ?'*

So I have white smoke coming from inside the engine. I was told is the LIM gasket. So if Im going to be removing it, I guess it the time to port it.

Now, how do I go about it? Do I just smoth the surface or am I increasing the diameter of the holes? Can some one that has done it before give me some pointers. Ive done this to my TPI engine, but I had altered gaskets that I used for size. In this one I have no idea how big to go.
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Old 01-19-2008, 07:49 PM   #2
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to match the lim ports with the heads you will take off enough material to get to .900x1.900 in. i used a dremel carbide cutter for the bulk of the cutting. i started using the small drum sander for the last portion to give it a nice smooth finish. i would give ur self @least 20 thou room for the sanding.
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Old 01-19-2008, 08:03 PM   #3
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so basically what Im doing is matching the LIM to the heads.
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Old 01-19-2008, 08:09 PM   #4
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You got it.
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Old 01-19-2008, 08:15 PM   #5
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Very important not to go any larger than the heads opening.......unless you open up your heads opening also.
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Old 01-19-2008, 08:17 PM   #6
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Slightly SMALLER than the head opening is a little better.

Here'* one:
http://www.bonnevilleclub.com/forum/...+strikes+again

Everyone else that'* done one, post your links.




It'll cost you a dremel tool, a few bits, and some gaskets.
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Old 01-19-2008, 08:18 PM   #7
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Locked for double posting. Alex, this question belongs in your other current Performance topic.
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