C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Aug 26, 2008 | 08:02 PM
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So i purchased the 52 mm bbk tb for my 1992 lt1. My lt1 Does not have the Air intake manifold with the runners, mine is similar to the lt4, so when i went to install my bbk tb my power coupler was too small and i could not stretch it over the lip on the bbk because the rubber was already ripping. I then purchased the power coupler from ecklers (expensive piece of $90 rubber) and when it came it was to long! It was ment for the air intake manifold that is set up with the runners! so i need to find a new replacement for mine, (pic one). or someone help me with some ideas! PLEASE


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Old Aug 26, 2008 | 08:13 PM
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Can't you just trim some length off the new one you bought?
You can put your old one in the oven for @ 300 degrees until it gets plyable and stretch it out as you put it on the TB.
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Old Aug 26, 2008 | 09:47 PM
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You're original coupler will fit. Just get it really warm (just not enough to melt it) and it will stretch enough to fit. I had this problem at first, but now it fits perfectly.
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Old Aug 26, 2008 | 10:37 PM
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I CAN'T use the old one because its RIPPING around the lip that slides on the tb!
looking for replacement or some other ideas.
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Old Aug 27, 2008 | 02:21 PM
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anyone else?
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Old Aug 27, 2008 | 06:00 PM
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How about stretching it like I did.



Took my time and moved the coupler a little at a time.
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Old Aug 27, 2008 | 06:52 PM
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I had the same problem. The 52 mm BBK lip is a little bigger that the stock TB. Someone here told me to heat up the air bridge. I tried that but it did not work.

I did get it on. I disconnected the air bridge from the air box. I placed it 3/4 of the way on the BBK without the metal strap. I put a shoehorn inside the air bridge and slipped it on. Then I took the strap apart and installed it. I guess you could just loosen the strap up.

Last edited by Kool88vette; Aug 27, 2008 at 07:15 PM.
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Old Aug 27, 2008 | 06:57 PM
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Also, I would send that rubber thing back to eckler's. It will dry out and decay from the heat of your engine. You could suck a piece of rubber into your engine and POW! Get an OEM replacement. One from salvage yard is better than that one from Eckler's.

Corvette central sells the same part for $45.00.

Last edited by Kool88vette; Aug 27, 2008 at 07:18 PM.
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Old Aug 27, 2008 | 11:14 PM
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More than one member has fabbed their own from a traffic cone.
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