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

L98 Help

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Old Aug 23, 2018 | 05:58 PM
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Default L98 Help

Team, looking for some help with a problem. The A/C compressor bracket on my 1990 C4 L98 Z51 Coupe broke. Apparently this part is an out of stock unicorn which is proving hard to find on the used market. Have a bunch of inquires out. The normal alternative (though not desirable in a C4) is to delete the A/C system, however the pulley tensioner is mounted to this bracket which eliminates that option. I can't find the info, was the C4 offered with out A/C using a different bracket. Is there anyone here on the forum that has eliminated the A/C for say track purposes on an L98 and done something other than use the A/C bracket for the pulley tensioner?

Thanks
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Old Aug 23, 2018 | 07:11 PM
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Is a 90 different from previous years?
https://www.ebay.com/itm/Chevrolet-8...EAAOSwlrJa2udr
https://www.ebay.com/itm/85-Corvette...ty!76092!US!-1
https://www.ebay.com/itm/85-86-87-CO...YAAOSwMsVXjXrs
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Old Aug 23, 2018 | 07:36 PM
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Ask in the used parts section.
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Old Aug 23, 2018 | 07:44 PM
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i
It's aluminum. It can be welded, a good welder can make it just as strong as a new one.
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Old Aug 24, 2018 | 11:28 AM
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1990 shares parts with the 1988 - 1991
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Old Aug 24, 2018 | 09:45 PM
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Before we go there, why did it break? Fatigue or did you not have all 3 braces in place? Ask me how I know.
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Old Aug 24, 2018 | 10:37 PM
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Originally Posted by grantar2
Team, looking for some help with a problem. The A/C compressor bracket on my 1990 C4 L98 Z51 Coupe broke. Apparently this part is an out of stock unicorn which is proving hard to find on the used market. Have a bunch of inquires out. The normal alternative (though not desirable in a C4) is to delete the A/C system, however the pulley tensioner is mounted to this bracket which eliminates that option. I can't find the info, was the C4 offered with out A/C using a different bracket. Is there anyone here on the forum that has eliminated the A/C for say track purposes on an L98 and done something other than use the A/C bracket for the pulley tensioner?

Thanks
take it to welding shop
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Old Aug 25, 2018 | 03:43 PM
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Originally Posted by aklim
Before we go there, why did it break? Fatigue or did you not have all 3 braces in place? Ask me how I know.
All braces have been in place, however the car spent 22 seasons competing in Autocross with 4 championships (Cal Club Region SCCA) and accumulated 135K miles before being retired and rebuilt in 2014. My guess is fatigue but really don't know. Would like to find a replacement part, but can have it welded if need be. Just means it takes up a space at my mechanic for an extended time. Live in a condo these days and can't work on the car a home anymore.
't
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Old Aug 25, 2018 | 09:17 PM
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Originally Posted by grantar2
All braces have been in place, however the car spent 22 seasons competing in Autocross with 4 championships (Cal Club Region SCCA) and accumulated 135K miles before being retired and rebuilt in 2014. My guess is fatigue but really don't know. Would like to find a replacement part, but can have it welded if need be. Just means it takes up a space at my mechanic for an extended time. Live in a condo these days and can't work on the car a home anymore.
't
https://www.ebay.com/itm/1988-91-Cor...p2047675.l2557

I think I have a spare one. PM me if you want it. Make me an offer I cannot refuse
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Old Aug 26, 2018 | 03:49 PM
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Originally Posted by aklim
https://www.ebay.com/itm/1988-91-Cor...p2047675.l2557

I think I have a spare one. PM me if you want it. Make me an offer I cannot refuse
Thank you for the link, that wasn't there Friday when I checked. Are you the eBay seller because I will buy that one it's a little more than I would have guessed at the start but not at all unfair, or did you have one you wanted to sell separately. The one on eBay looks really clean and solid almost like new old stock.
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Old Aug 26, 2018 | 04:27 PM
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Originally Posted by grantar2
Thank you for the link, that wasn't there Friday when I checked. Are you the eBay seller because I will buy that one it's a little more than I would have guessed at the start but not at all unfair, or did you have one you wanted to sell separately. The one on eBay looks really clean and solid almost like new old stock.
No I am not the seller of the NOS unit. Mine is a used unit. I have a used one.
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