Question: C4 / ZR-1 Owners?
07-14-2011, 12:46 PM
#1
Burning Brakes
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Question: C4 / ZR-1 Owners?
Are there any COMMON PROBLEMS or MAINTENANCE ISSUES with the
ZR-1's? Do any of you have any "pet peeves with these awesome
rides?
ZR-1's? Do any of you have any "pet peeves with these awesome
rides?
07-14-2011, 02:20 PM
#3
Le Mans Master
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That said, the LT5 is, well, the "Heart of the Beast", far as distinguishing the ZR-1 from "other Corvettes"!
In short, the bulk of the issues reside under the plenum. So, it is a common "rite of passage" for a new Z owner to pull the plenum and do an R&R. And, speaking of R&R items:
secondary throttle circuit; including various check valves and rubber couplings, actuators and switches. All of these things are available.
90 thru 92s, if they have the OEM injectors in them, need to be replaced, due to alcohol incompatibility with those injectors. New ones are required (and NOT factory NOS injectors either!)
The starter solenoid connections need to be replaced - after a time, depending on whether it ever got wet. (never wash an LT5 as the starter is in the valley between the heads, and the drain hole uder the starter. It sometimes gets blocked with grime and such and if someone washes the top of the motor, the starter might get swamped and that is that! The good news is new starters can be had (commonly used in some Japaneese cars too) and there's rebuild kits avaliable on Ebay.
Coil packs can go bad, but there are OEM or after market replacements available. Plug wires are available too.
There are two fuel pumps in the ZR-1, and they get talked about a bit on this and the Net Registry board too. Once done and perhaps you are done for another 20 years!? The are available new, and not too expensive.
As for someone to refer to when you have problems, most of the visitors here also belong to the ZR-1 Registry. The ZR1 Registry has some specialists that hang out there exclusively. There's no fear in owning or reason to avoid the ZR-1. It has a very tight knit following, "The Brotherhood of the Beast" we call it, and folks will bend over backward to help you out.
Good luck on your quest!
P.
07-14-2011, 03:03 PM
#5
Burning Brakes
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90% of the ZR-1 is C4, and all the "stuff" associated with a 16-21 year old car apply.
That said, the LT5 is, well, the "Heart of the Beast", far as distinguishing the ZR-1 from "other Corvettes"!
In short, the bulk of the issues reside under the plenum. So, it is a common "rite of passage" for a new Z owner to pull the plenum and do an R&R. And, speaking of R&R items:
secondary throttle circuit; including various check valves and rubber couplings, actuators and switches. All of these things are available.
90 thru 92s, if they have the OEM injectors in them, need to be replaced, due to alcohol incompatibility with those injectors. New ones are required (and NOT factory NOS injectors either!)
The starter solenoid connections need to be replaced - after a time, depending on whether it ever got wet. (never wash an LT5 as the starter is in the valley between the heads, and the drain hole uder the starter. It sometimes gets blocked with grime and such and if someone washes the top of the motor, the starter might get swamped and that is that! The good news is new starters can be had (commonly used in some Japaneese cars too) and there's rebuild kits avaliable on Ebay.
Coil packs can go bad, but there are OEM or after market replacements available. Plug wires are available too.
There are two fuel pumps in the ZR-1, and they get talked about a bit on this and the Net Registry board too. Once done and perhaps you are done for another 20 years!? The are available new, and not too expensive.
As for someone to refer to when you have problems, most of the visitors here also belong to the ZR-1 Registry. The ZR1 Registry has some specialists that hang out there exclusively. There's no fear in owning or reason to avoid the ZR-1. It has a very tight knit following, "The Brotherhood of the Beast" we call it, and folks will bend over backward to help you out.
Good luck on your quest!
P.
That said, the LT5 is, well, the "Heart of the Beast", far as distinguishing the ZR-1 from "other Corvettes"!
In short, the bulk of the issues reside under the plenum. So, it is a common "rite of passage" for a new Z owner to pull the plenum and do an R&R. And, speaking of R&R items:
secondary throttle circuit; including various check valves and rubber couplings, actuators and switches. All of these things are available.
90 thru 92s, if they have the OEM injectors in them, need to be replaced, due to alcohol incompatibility with those injectors. New ones are required (and NOT factory NOS injectors either!)
The starter solenoid connections need to be replaced - after a time, depending on whether it ever got wet. (never wash an LT5 as the starter is in the valley between the heads, and the drain hole uder the starter. It sometimes gets blocked with grime and such and if someone washes the top of the motor, the starter might get swamped and that is that! The good news is new starters can be had (commonly used in some Japaneese cars too) and there's rebuild kits avaliable on Ebay.
Coil packs can go bad, but there are OEM or after market replacements available. Plug wires are available too.
There are two fuel pumps in the ZR-1, and they get talked about a bit on this and the Net Registry board too. Once done and perhaps you are done for another 20 years!? The are available new, and not too expensive.
As for someone to refer to when you have problems, most of the visitors here also belong to the ZR-1 Registry. The ZR1 Registry has some specialists that hang out there exclusively. There's no fear in owning or reason to avoid the ZR-1. It has a very tight knit following, "The Brotherhood of the Beast" we call it, and folks will bend over backward to help you out.
Good luck on your quest!
P.
