Forum: C4 ZR-1 General Postings
09-19-2024
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Replies: 10
Views: 2,283
Re: WAZOO Maintenance Day
Sorry guys, I've got other obligations and will have to miss this one. Have fun!
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Forum: C4 ZR-1 General Postings
09-19-2024
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Replies: 3
Views: 1,091
NCM LT5 Engine
Check it out.
https://www.corvettemuseum.org/lt5-engine/
Like many of us I've spent a lot of time studying this cut-away LT5 display when visiting the museum.
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Forum: C4 ZR-1 General Postings
09-05-2024
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Replies: 9
Views: 2,289
GM Authority Showing the C4 ZR-1 Some Love
Short ZR-1 article today on GM Authority
https://gmauthority.com/blog/2024/09/heres-why-the-c4-corvette-zr-1-is-called-the-king-of-the-hill/
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Forum: C4 ZR-1 General Postings
08-27-2024
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Replies: 12
Views: 3,130
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Forum: C4 ZR-1 Technical Postings
08-21-2024
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Replies: 43
Views: 23,781
Re: Engine noise- stuck lifter?
My heads have those grinding marks too. They are from the finishing work done at the factory to remove casting flashing during production. From what I can see nothing to worry about.
Sent from...
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Forum: C4 ZR-1 Technical Postings
08-16-2024
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Replies: 43
Views: 23,781
Re: Engine noise- stuck lifter?
A word of caution.
The camshaft retainers that are installed under the cam covers are meant to hold the cams in place to facilitate the installation of the camshaft cover. They are a very loose fit...
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Forum: C4 NCRS for ZR-1s
08-04-2024
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Replies: 2
Views: 1,469
Re: Oil Cooler Lines
In industry flex hoses are generally considered to age limited. Our cars are now pushing 30+ years. Given that more and more oil cooler line failures are to be expected. The OEM lines were not the...
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Forum: C4 Members' Rides
06-27-2024
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Replies: 11
Views: 5,532
Re: Long Time Lurker First Time Owner
Excellent!!
Welcome to the 94 Torch Red club. What color interior?
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Forum: C4 ZR-1 Technical Postings
06-23-2024
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Replies: 4
Views: 6,455
Re: Replacing main bearings
Suggest cutting the oil filter and see what's in it.
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Forum: C4 ZR-1 Technical Postings
06-18-2024
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Replies: 9
Views: 7,153
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-02-2024
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Replies: 99
Views: 30,805
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Forum: C4 ZR-1 Technical Postings
05-25-2024
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Replies: 3
Views: 9,847
Re: Air Filter Cover
The OEM air cleaner cover from my 94 ZR-1 is made out of aluminum.
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-21-2024
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Replies: 99
Views: 30,805
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Forum: C4 ZR-1 Technical Postings
04-02-2024
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Replies: 5
Views: 2,651
Re: Front Crank Seal
Not an easy fix.
Engine will have too be raised significantly or removed completely to remove the crank dampener and old seal. Front seals seldom leak. Recommend double checking to confirm leak...
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Forum: C4 ZR-1 General Postings
03-26-2024
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Replies: 4
Views: 1,691
Re: Rear Lining screws.
OEM screws are stainless steel
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Forum: C4 ZR-1 Technical Postings
03-26-2024
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Replies: 3
Views: 2,355
Re: Cam Position Sensor Removal
Be sure to place a small container below the cam sensor to catch the oil that comes out when the sensor is extracted.
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-23-2024
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Replies: 6
Views: 1,886
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Forum: Mid-Atlantic Region
03-23-2024
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Replies: 6
Views: 6,576
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Forum: C4 ZR-1 Technical Postings
03-20-2024
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Replies: 7
Views: 2,854
Re: Fuel Pressure Problem
Second fuel only come on during startup and when the ECM calls for it during hard acceleration. Otherwise the main fuel pump supplies all the fuel engine requires.
How much fuel pressure do you...
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Forum: C4 ZR-1 Technical Postings
03-20-2024
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Replies: 7
Views: 2,854
Re: Fuel Pressure Problem
Book 2 of the Factory Service Manual set has the diagram you at looking for. If you don't have them for your particular year look on eBay.
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Forum: C4 ZR-1 Technical Postings
03-18-2024
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Replies: 5
Views: 5,765
Re: Heat gun to repair license plate frame?
Should work. Be careful not to use to much heat. BTW the frame in the photo is upside down.
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Forum: C4 ZR-1 Technical Postings
03-16-2024
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Replies: 9
Views: 2,835
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Forum: C4 ZR-1 General Postings
03-14-2024
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Replies: 26
Views: 5,190
Re: A question for the longtime owners.
Agree with Dom.
Difficult engine access keeps me in check on my C8. Just the opposite situation on the C4 ZR-1. Full engine bay access without have to remove the Hood.
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Forum: C4 ZR-1 Technical Postings
03-08-2024
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Replies: 12
Views: 5,301
Re: Oil leak
Oil leaking past the crank sensor O-ring seal is the usual culprit. Brother Yun came up with larger size O-ring replacement that solves the problem.
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Forum: C4 ZR-1 Technical Postings
03-05-2024
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Replies: 1
Views: 9,226
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