Forum: C4 ZR-1 General Postings
6 Days Ago
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Replies: 25
Views: 893
Re: A question for the longtime owners.
Marty,
If I bought a C8 I know I would?t be wrenching on it. The ZR is one of the last generations that a ?shade tree? guy like me can play w and modify. That is certainly a big part of the fun.
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Forum: C4 ZR-1 General Postings
1 Week Ago
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Replies: 25
Views: 893
Re: A question for the longtime owners.
This is my second ZR since 2007 having owned this one now since 2010. The chassis has 165k on the ODO but literally everything underneath and engine has about 55k or less on it. It pretty much has...
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 6
Views: 201
Re: Knock Sensor 1995 ZR1
U sure u bought the correct sensor? There?s a difference between ZR and regular C4. I forget the value, think its 3.2K ohms, but u can check resistance on sensor to make sure. Check w Jerry at...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
01-26-2024
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Replies: 15
Views: 1,122
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Forum: C4 ZR-1 Technical Postings
12-19-2023
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Replies: 19
Views: 3,299
Re: Best Place to Buy Injectors?
RC Engineering has an easy BSFC CALCULATOR to help determine injector flow required to support a desired CHP. The stock injector flow is good enough for ~ 540chp w an 80% headroom from static.
I...
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Forum: C4 ZR-1 Technical Postings
12-06-2023
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Replies: 13
Views: 4,251
Re: Stalling sometimes at stops?
Had that issue w mine a number of years ago. I have a 63mm TB so no dag. Throttle return springs get weak after 30 years and I gotnone of Marc?s helper springs. Throttle closes correctly ever since.
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Forum: C4 ZR-1 Technical Postings
12-05-2023
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Replies: 13
Views: 4,251
Re: Stalling sometimes at stop
Well I guess we can ask Marc next week. Closing the throttle plates causes the ECM to increase IAC steps in order to maintain commanded idle speed. This gives the ECM more ?headroom? to control idle...
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Forum: C4 ZR-1 Technical Postings
12-04-2023
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Replies: 13
Views: 4,251
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Forum: C6 ZR1 General Postings
11-26-2023
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Replies: 12
Views: 6,823
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Forum: C4 ZR-1 General Postings
11-22-2023
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Replies: 2
Views: 911
Re: Quick Jacks on Sale
I?ve had QJ 5000 for 4 years and love them. They make oil change, swapping O2 sensors, knock sensor, even working on top end much easier. With no room for a lift, these are the best alternative.
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Forum: C4 ZR-1 Technical Postings
11-16-2023
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Replies: 4
Views: 1,440
Re: 02 Sensors
AC Delco are the only ones I use. Possibly Denso. Bosch is prone to drop outs.
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Forum: C4 ZR-1 Technical Postings
10-23-2023
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Replies: 6
Views: 967
Re: Engine knock
How has the motor been modded if at all? If its stock and has the stock calibration, knock shouldn?t be much of an issue.
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Forum: C4 ZR-1 Technical Postings
10-07-2023
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Replies: 4
Views: 1,193
Re: ADS Super Chip Tune
Most of the pre-done ?tuner? calibrations done in the 90?s were not worth the $ IMO. Certainly, Marc H?s tuning brings years of experience w the LT5 and is a favorite on this forum. Tuning the LT5...
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Forum: C4 Members' Rides
09-28-2023
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Replies: 20
Views: 3,629
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Forum: C4 ZR-1 Technical Postings
09-22-2023
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Replies: 7
Views: 1,454
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Forum: C4 ZR-1 Technical Postings
09-08-2023
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Replies: 12
Views: 2,808
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Forum: C4 ZR-1 General Postings
08-09-2023
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Replies: 9
Views: 1,256
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Forum: C4 ZR-1 Technical Postings
06-26-2023
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Replies: 16
Views: 1,942
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Forum: C4 ZR-1 Technical Postings
06-26-2023
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Replies: 16
Views: 1,942
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-24-2023
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Replies: 5
Views: 1,502
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-15-2023
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Replies: 4
Views: 1,136
Re: Wanted: Alternator for Rebuilding
Erik,
I contacted Marc regarding delivery of alternator. He is not aware of any requests for alternator rebuild on hus backlog I suggest u contact him and make arrangements. I can get alternator...
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Forum: C4 ZR-1 Technical Postings
06-14-2023
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Replies: 5
Views: 965
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Forum: C4 ZR-1 Technical Postings
06-11-2023
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Replies: 3
Views: 646
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Forum: C4 ZR-1 Technical Postings
06-10-2023
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Replies: 9
Views: 1,311
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Forum: C4 ZR-1 General Postings
06-04-2023
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Replies: 8
Views: 1,518
Re: C6 Z06 wheels on a ZR-1?
Think they do altho it may be that they aren?t available in ZR-1 offsets. Hiwever, the offset for the ZR isnonly different for the rear. The 84 has the same iffsets as the ZR-1.
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