Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-08-2023
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1 Prototypes
02-17-2023
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Replies: 10
Views: 5,971
Re: Link to the early cars.
I?m so sorry to hear that. It really hit my heart to hear that; I had been reading through his posts looking for answers but did not know this. I could see he was a wealth of knowledge and loved to...
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Forum: C4 ZR-1 Prototypes
02-15-2023
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Replies: 10
Views: 5,971
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Forum: C4 ZR-1 General Postings
02-15-2023
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Replies: 3
Views: 1,087
Re: New 89 VIN Found
Apologies to raise this thread from the dead, but looking for information on 580003, which mentioned in each post of this thread.
Is it still with GM Heritage foundation?
...
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Forum: C4 ZR-1 Prototypes
02-13-2023
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Replies: 19
Views: 7,617
Re: Collection of Early LT5 VIN, MM Numbers
Necro thread raised from the dead for the potential interest of original posters...
It looks like L5800008 potentially mfg. on 032189 could be for sale on BaT. The donor engine swapped...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
02-13-2023
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Replies: 1
Views: 453
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
07-04-2022
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-19-2022
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-02-2022
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-29-2022
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Replies: 14
Views: 1,716
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-28-2022
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-28-2022
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Replies: 10
Views: 3,185
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-28-2022
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Replies: 10
Views: 3,185
FS: 1990 ZR1; Black; 55.6k Miles; Hou. Texas
I'm finally parting ways with my 1990 ZR-1.
I'm moving and won't have enough garage space at the new place for all the cars, so this one has to go!
The car was purchased by me from a seller in...
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Forum: C4 ZR-1 Technical Postings
06-03-2021
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Replies: 5
Views: 730
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Forum: C4 ZR-1 Technical Postings
05-26-2021
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Replies: 5
Views: 730
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Forum: C4 ZR-1 General Postings
07-29-2020
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Replies: 4
Views: 869
Re: 1990 on Bring A Trailer
Don't fear the plenum pull at all. I did, but ultimately it was a very easy job. I probably should have done more while I was in there, but it was easy enough that I stuck with the most pressing...
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Forum: C4 ZR-1 Technical Postings
10-14-2019
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Replies: 12
Views: 2,067
Re: Secondaries not functioning
Tightened everything up, new solenoid installed (in old frame), new gaskets, topped off coolant, runs like a dream! In my case, someone had already put stiffeners in the accordian.
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Forum: C4 ZR-1 Technical Postings
10-09-2019
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Replies: 12
Views: 2,067
Re: Secondaries not functioning
Thank you! Part ordered!
I found some other things to tighten and clean up while in there, so the plenum pull will have been well worth it.
Leaking pcv cover, lose injector housing...
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Forum: C4 ZR-1 Technical Postings
10-09-2019
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Replies: 12
Views: 2,067
Re: Secondaries not functioning
I'm having a hard time locating a replacement vacuum solenoid.
Seems pn 1997222 is out of production and out of stock...
Did I read there is a near twin to this part with a different bracket...
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Forum: C4 ZR-1 Technical Postings
06-16-2019
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Replies: 12
Views: 2,067
Re: Secondaries not functioning
Thanks much for your help and guidance!
Vacuum system is functioning well when cold and hot.
I've looked at both actuators, however, when it doesn't function, neither do. When it DOES...
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Forum: C4 ZR-1 Technical Postings
06-15-2019
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Replies: 12
Views: 2,067
Secondaries not functioning
My secondaries started acting up with the heat lately.
They work fine when cold, then after warm-up (anywhere from 5 miles to 20 miles) they stop functioning.
I first replaced the fuel pumps...
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Forum: C4 ZR-1 Technical Postings
03-31-2019
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Replies: 4
Views: 651
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Forum: C4 ZR-1 Technical Postings
03-31-2019
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Replies: 4
Views: 651
Re: A/C Recharge (Should I convert to R134a?)
After some looking at mine, i noticed that the low side had a conversion fitting already. I guess the removed the high side one because of the leaky schrader valve? It has a old style cap on it. In...
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