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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 09-13-2006, 11:38 PM   #11
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The grease is $50 a tube. The bearings come pre-greased. They are NEEDLE bearings, and are very prone to foreign object damage (FOD).

Don't EVER open a SC case and remove the rotors without replacing the bearings or regreasing. The pre-greased bearings are cheaper than the grease.
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Old 09-14-2006, 02:14 PM   #12
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Would it be worth my while to do it to my n/a motor the throttle body and lim
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Old 09-14-2006, 02:17 PM   #13
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Quote:
Originally Posted by n/a white bonne
Would it be worth my while to do it to my n/a motor the throttle body and lim
Yes. I've seen the L36 LIM, and it isn't pretty. The L36 TB I ported was tested by a member with very good results.
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Old 09-14-2006, 02:34 PM   #14
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To get to the lim do you have to pull the heads? Also i think i remember reading something about being able to do some modifications to the l36 uim also is that true?
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Old 09-14-2006, 02:46 PM   #15
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No, the heads and valve covers can remain (but it is a good time to do the VC gaskets).

Try this:
http://www.bonnevilleclub.com/forum/...ic.php?t=62386

We just did EK98'* car, but didn't do any porting/polishing. It was preventive maintenance, and a damn good thing we did it, too. But the pics in the topic link should give you a good idea of what'* involved.

Get a LIM from the wrecker to play with. Then swap it onto your car. It took me 2.5 hours on Sunday (when I had to go back in to replace a NEW bad coolant elbow), but I've done a few of these on 3.8'*.
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Old 09-15-2006, 05:19 PM   #16
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Ok question. The 96 L67 throttle body has a support or fin (IDK what it is called) below the throttle body. Anyway would there be any benefit in removing the support all together to let a little more are in? I know that in 99 the TB was revised and that was removed. Would this throw maf readings off?
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Old 09-15-2006, 09:21 PM   #17
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I've already tried it. It'll screw up your MAF readings. The stock MAF sensor isn't capable of reading the increased flow with half the MAF support removed. It disrupts the natural intended flow through the sensor.

Pics of that TB are also posted here somewhere. Including pics during machining.
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Old 09-15-2006, 09:27 PM   #18
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Old 09-15-2006, 10:27 PM   #19
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Bill, some day, I'm going to take a month off and drive to your house so you can port my car. You're going to port every nook and cranny while I take pictures and freeload off you. Cool?
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Old 09-15-2006, 10:33 PM   #20
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You betcha. BTW, don't forget, that TB above had problems. That'* when I did the Gen3 swap. My Gen3 TB is ported on the SHAFT only, and polished.

I'll probably do another one this winter with a much better smoothing/polishing job. Along with 3 more LIM'* (two for me to swap/test, one for another test car, maybe yet another as well), and another SC.

This is an important note:

The L27, Both L67 series, and the L36 all have the same head port size. Yet all three are smaller on the LIM ports. Matching them unlocks some serious potential.

Ever wonder how I run a 2.0" pulley on a Gen3 SC when most people are barely capable of running two common diameters larger? Ever wonder how Boosty was able to drop from a 3.4 to a 3.2 by simply porting and polishing his SC?

Anyone ever wonder (of course you haven't seen it, but trust me) why my LIM is always SPOTLESS now, even if I don't run my Water Injection?

The answer starts with the letter P. And labor is free if you have the balls.
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