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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-07-2007, 12:46 AM   #1
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OK willwren. Just one more question without being redirected. Will the LIM give me significant gain or should I forget it. Did I mention I like my dremel? Talk to ya when I start my mods.
Thanks. u da man.
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Old 03-07-2007, 12:51 AM   #2
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From what we've seen so far, the L36 responds VERY well to the LIM work. Both in stock form and modified (funny how the two test cars were chosen, eh?).

HOWEVER, both test cars were 95'*, with less torque-managment in the PCM'*. The general feeling between jr's3800, billboost37, and myself is that the 96 and newer L36'* with torque management aren't going to see significantly LESS gain. Wheelspin is what sets TM in motion. You'll still gain primarily bottom end and midrange, with a smoother power delivery through the band. It picks up gains where the L36 doesn't NATURALLY excel, which is the top end, neatly meshing the powerband all the way through.

You'll gain. You'll feel it. That'* my gut instinct.
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Old 03-07-2007, 12:56 AM   #3
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Sounds good to me.More flow more go. I read about someone else porting their LIM but they didn't "smooth" the ports where the UIM blots on. Seems to me this should be done for better flow. You're thoughts master will?
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Old 03-07-2007, 08:40 AM   #4
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I had removed all the build up that had accumlated in the cylinder head ports. Made them smooth again without removing any metal.

But if your going to at least smooth the CH ports, gonna have to remove the heads. And if your gonna do that, clean those valves too.
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Old 03-07-2007, 08:47 AM   #5
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Yup, if you do the heads, plan on taking them off. You don't want the abrasives going into your cylinders.
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Old 03-07-2007, 04:17 PM   #6
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If you like your dremel then don't overwork it. Give some rest as soon as you feel the dremel getting hot, stop and wait for it to cool down then rinse and repeat! Oldsman and I got through Porting & Polishing a supercharger and a LIM on the same $15 ebay no brand name dremel and it still works well to this day!
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Old 03-07-2007, 05:53 PM   #7
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Don't get one without replaceable brushes.

Don't count on a dremel for working cylinder heads.

Plan on buying 2 dremels.
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Old 03-08-2007, 12:18 PM   #8
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For those with air compressors, harbor freight is selling a mini die grinder this weekend (appears to be similar in size / power output to a dremel) for $10. I don't have any experience with it, but plan on picking one up, to see how it compares for dremel type tasks. It would avoid the wear and tear issues of a dremel, and do a favor for your ears...

http://www.harborfreight.com/cpi/cta...emnumber=47869

And, as a follow up Q:

Has anyone used a die grinder (with appropriate bit selection) to do this? Just wondering if it'* too powerful for working on the aluminum. Probably good for working the iron of the heads though...
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Old 03-08-2007, 12:39 PM   #9
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The HF mini-die-grinder is garbage. I have two. Worst waste of ten bucks I ever spent.

Die-grinder would be bad news on a LIM. You need smaller bits for the detail work, and one goof with a die grinder will destroy your manifold.
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Old 03-08-2007, 12:42 PM   #10
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I don't recall the brand of die grinder I have, but it'* a mini with a 1/4 shank and a 3/8 shank. It will run dremel bits and anything else. It cost $25 and has eaten four pairs of heads, three or four pairs of exhaust manifolds, two aluminum intake manifolds, and one LIM that I can recall right off the top of my head, a wooden door, and many other things. Mini die grinders work well when you get the right brand. I have no experience with the HF ones...
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