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I have a nice 89-92 4 WD disc prop valve in nice, all threads good, clean no corrosion prop/combo brake valve off a 90 Formula car
this takes bubble flared lines IIRC early cars still have double flared lines please verify if you have early third gen
$90 shipped in medium flat rate box XXX SOLD IT XXX
Re: 89-92 disc prop valve 1lE with PBR rear brakes
MD is 89-92 J65, 2nd design. To the best of my knowledge, the only difference between any of the later valves is rear disc vs rear drum. The 1LE and J65 valves should be the same.
The books heavily imply MC and MD interchange. MB is the later disc/drum valve, then there's LF which shows up sometimes on late PBR and 1LE cars.
Re: 89-92 disc prop valve 1lE with PBR rear brakes
Originally Posted by QwkTrip
MD, regular 4 wheel disc brakes (J65 brakes)
I don't think it's the style with 1LE PBR rear disc brakes
this car had the 88-92 PBR rear brakes (same as 1LE)
this car also had a 9 bolt with the PBR brakes some say 89 was last year for 9 bolts could it of been changed? and added PBR - who knows
Re: 89-92 disc prop valve 1lE with PBR rear brakes
Originally Posted by Drew
MD is 89-92 J65, 2nd design. To the best of my knowledge, the only difference between any of the later valves is rear disc vs rear drum. The 1LE and J65 valves should be the same.
The books heavily imply MC and MD interchange. MB is the later disc/drum valve, then there's LF which shows up sometimes on late PBR and 1LE cars.
J65 was also for the 85. Looking at the book I would hazard a guess that 85 was the 1st year and, obviously, 1st design. Different part number of 25521985. Interesting that the last 4 digits are the year. Has to be a coincidence.
Don't read too much into it, I cropped out the entire part of the listing that didn't apply to 89-92.
J65 is a generic GM code for 4 wheel disc. 1989 was a crossover year, so there's '1st design' early cars, and '2nd design' later cars. 85 is irrelevant, since the topic is a much later design part.
Re: 89-92 disc prop valve 1lE with PBR rear brakes
Originally Posted by DontBlnkBadWolf
J65 was also for the 85. Looking at the book I would hazard a guess that 85 was the 1st year and, obviously, 1st design. Different part number of 25521985. Interesting that the last 4 digits are the year. Has to be a coincidence.
I know this part sold but just wanted to add for reference that I believe my 91 Formula still has the LF tag affixed to the front of it. I will check this out later today. It was an early build car for 91 year if it helps any
04-27-2020, 11:40 AM
