Forum: C4 ZR-1 Technical Postings
2 Weeks Ago
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Replies: 5
Views: 175
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
2 Weeks Ago
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Replies: 4
Views: 165
Re: Rear Lining screws.
OEM screws are stainless steel
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 3
Views: 131
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
3 Weeks Ago
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Replies: 6
Views: 195
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Forum: Mid-Atlantic Region
3 Weeks Ago
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Replies: 6
Views: 2,988
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 7
Views: 220
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
3 Weeks Ago
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Replies: 7
Views: 220
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
4 Weeks Ago
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Replies: 5
Views: 148
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
4 Weeks Ago
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Replies: 9
Views: 321
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Forum: C4 ZR-1 General Postings
4 Weeks Ago
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Replies: 26
Views: 1,175
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: 362
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: 79
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Forum: C4 ZR-1 Technical Postings
03-01-2024
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Replies: 12
Views: 390
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Forum: C4 ZR-1 Technical Postings
02-27-2024
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Replies: 13
Views: 488
Re: Rear Differential Gear Swap
I was lucky back then due GM shutting down a lot of the weaker Chevrolet dealerships. Tool liquidators came in and bought up up a lot of dealerships special tool inventory and many of them ended up...
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Forum: C4 ZR-1 Technical Postings
02-27-2024
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Replies: 13
Views: 488
Re: Rear Differential Gear Swap
Yes, several special tools are required. Case spreader, set bearings, inch pound torque wrench, 300 lb torque wrench, dial indicator, precision calipers, heavy duty snap ring pliers, pry bars,...
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Forum: C4 ZR-1 Technical Postings
02-26-2024
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Replies: 6
Views: 241
Re: Knock Sensor 1995 ZR1
I'm in Fairfax, VA and would be glad to help you out. If you are not in a hurry recommend joining us at the next WAZOO maintenance day event which we have from time to time.
Sent from my iPhone...
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Forum: C4 ZR-1 Technical Postings
02-26-2024
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Replies: 13
Views: 488
Re: Rear Differential Gear Swap
Factory Service Manual is what I use. It shows pinion preload using shims. Most modern replacement gears sets now use crush sleeves for pinion preload. Plenty of videos on YouTube showing crush...
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Forum: C4 ZR-1 General Postings
02-13-2024
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Replies: 4
Views: 273
Re: New engine startup in restomod 62
If we still live in Sugar Land, TX I'd be glad to come by and help you out. I've been dreaming about project like this. 1962 Corvette restomod with aftermarket chassis, modern Corvette suspension,...
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Forum: C4 ZR-1 General Postings
02-07-2024
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Replies: 9
Views: 415
Re: The history and meaning of the Corvette logo
Before retiring the German companies I previously worked for, MTU, MAN, and RENK were the leading suppliers of propulsion equipment for corvette class naval combatant ships. Back in WW2 era...
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Forum: C4 ZR-1 Technical Postings
01-26-2024
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Replies: 816
Views: 79,214
Re: TB removal and then some!!!
Hi Tom,
Good to hear from you.
The plastic piece is crimped in during manufacture of the nut. Doubt a replacement can be found. Better off replacing the nut with a good one.
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Forum: C4 ZR-1 Technical Postings
01-13-2024
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Replies: 3
Views: 298
Re: Rear Leaf Spring Replacement
I have a used one.
Good condition.
PM sent.
2004220043
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
01-07-2024
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Replies: 14
Views: 1,622
Re: Mecum - LT5 engines
Engine on the left appear to have an EGR tube leading to the plenum.
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Forum: C4 ZR-1 Technical Postings
01-07-2024
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Replies: 4
Views: 532
Re: Oil in Plenum
Some oil in the plenum is not unusual for a normal running LT5 engine with original PCV system. You might check the injector housing gaskets for any seepage. Otherwise provided oil consumption is not...
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Forum: C4 ZR-1 Technical Postings
12-23-2023
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Replies: 10
Views: 1,101
Re: New engine whistle/whine
Suggest try slacking the belt tensioner with the engine idling and see if that makes any difference
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Forum: C4 ZR-1 Technical Postings
12-21-2023
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Replies: 7
Views: 1,365
Re: Fuel leak somewhere
Suggest checking the fuel pressure regulator. Check by pulling the vacuum line from the top. If raw gas squirts out of the fitting after energizing the fuel pumps then you have a ruptured fuel...
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