'91 brakes
Thread Starter
1st Gear
Joined: May 2003
Posts: 1
Likes: 0
From: Ohio
'91 brakes
I have a '91 C4 in need of brake rotors. A quick trip to the one of the local parts stores revealed there are two brake systems for the car, a JL9 and a J55. The store did not have JL9 rotors available. A quick check of the codes and a call to my local dealer confirmed my car has the JL9 system. The dealer tells me the J55 system is heavy duty and the rotors are not interchangeble with the JL9 rotors, but could not tell me why. So I have questions:
1) What is the difference between the JL9 and J55?
2) Does anyone have any experience with aftermarket rotors they would care to pass along?
3) Would anyone care to recommend an aftermarket rotor?
4) What would I need to do to upgrade to the J55 system?
Thanks
1) What is the difference between the JL9 and J55?
2) Does anyone have any experience with aftermarket rotors they would care to pass along?
3) Would anyone care to recommend an aftermarket rotor?
4) What would I need to do to upgrade to the J55 system?
Thanks
Racer
Joined: Aug 2000
Posts: 460
Likes: 12
From: Gulf Shores AL
Re: '91 brakes (Cactus Jack)
I'll defer to the experts, but I believe the package you mention is for the ZR-1 as opposed to a "regular" vette.
I bought a set of GT Rotors for the front and stock rotors for the rear. I think I got them from Lingenfelter, but it may have been "The Last Detail" as well. I remember shopping around on line; most folks offered these and I bought on price.
I believe there are quite a few threads on brake upgrades. My recollection is the upgrade required larger wheels, which discouraged me from doing it.
I bought a set of GT Rotors for the front and stock rotors for the rear. I think I got them from Lingenfelter, but it may have been "The Last Detail" as well. I remember shopping around on line; most folks offered these and I bought on price.
I believe there are quite a few threads on brake upgrades. My recollection is the upgrade required larger wheels, which discouraged me from doing it.
Race Director
Joined: May 2000
Posts: 17,101
Likes: 4
From: No more yankee my wankee, the Donger is tired!
Re: '91 brakes (Cactus Jack)
1) What is the difference between the JL9 and J55?
2) Does anyone have any experience with aftermarket rotors they would care to pass along?
3) Would anyone care to recommend an aftermarket rotor?
4) What would I need to do to upgrade to the J55 system?
[Modified by Jeffvette, 10:52 AM 5/13/2003]
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: '91 brakes (Cactus Jack)
I be in error here, but I think that the JL9, 12 inch rotor, is the standard brakes through 94. 95 and 96 have the J55 as standard. To change to the J55 you would need the calipers, brackets etc. in addition to the rotors.
[Modified by Steel Blue 91, 1:59 PM 5/13/2003]
[Modified by Steel Blue 91, 1:59 PM 5/13/2003]
