[Shotimes] Rear rotor size

[Jon Heese]

Jason,

For what it's worth, my '95 GL came from the factory with 4-wheel discs 
and I've seen a couple more in salvage yards with such.  So it was 
offered as an option on SLOs.

I appreciate the effort, but in my search for this number, I already 
came across all of the same stuff you did. =)  I guess I'll just go 
outside later and measure the circumference of the disc to get an 
accurate diameter number.  If anyone's interested, I'll post it to the list.

  - Jon

Hartberger, Jason M. AT3 wrote:
> I can't quote you exactly (making me pretty much useless for the question
> asked), but I do know that the only difference in SHOs was vented rear disks
> (vice solid ones later) in the 89-91(92?). I think. I'm not actually sure
> about the rears... I do know that the SLOs used drums in the back, so that's
> a whole other ballpark. I just looked on AlldataDIY, and it gives a part
> number of YF1Z2C026BA for the rear disks on a 94. Autozone lists the same
> (different) part number for a rear rotor - 54025 - for both a 93 and a 94,
> suggesting no change between those two years. AZ lists a part number of 5495
> for a '90, and also a 92, meaning they changed from the vented to the solid
> rotor in 93. still don't know the OD of these things, though, but you can go
> to an AZ or AAP and ask for one with a ruler and measure it there... the 94
> rotor has a min. thickness of .5", if it helps.
> 
> There might have been some rear disked SLOs out there. I don't know of any,
> but I'd assume it'd be the same disk as the SHO... commonality and all that.
> 
> I doubt it helps a whole lot, but I hope it helps a little.
> 
> Jason
> 
> 
> -----Original Message-----
> From: Jon Heese [mailto:shotimes@jonheese.com]
> Sent: Monday, January 10, 2005 1:25 AM
> To: shotimes@autox.team.net
> Subject: [Shotimes] Rear rotor size
> 
> 
> Out of curiosity, what's the diameter of the Gen2 factory rear rotors? 
> I looked through my year or so of list archives and googled the crap out 
> of it, but no one explicitly quotes a diameter measurement for the 
> rotors.  I suppose I could go outside with a lug wrench and a measuring 
> tape, but I reckon someone can throw this out off the top of their head.
> 
> Also, I know the size of the front rotors changed a couple times 
> throughout the years, but did the size of the rears ever change?  Are 
> they the same rotors found on rear disc SLO's of the same vintage?
> 
> TIA,
> Jon Heese
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes