Front rotor dimensions & rear drum/disc dimensions


Posted by Ben on October 16, 1999 at 16:52:47:

Finally have some time to research the various rotor & drum dimensions and have them listed below. NOTICE that the factory manual lists REAR DISC brakes. Don't know which model, but there might be an anvenue for those who wish to have rear disc's (and they will have factory parts available).

They cann't give a straight answer for the various front pads & rotors they've sold me and me returning because they don't fit. I'll have to take my front apart, measure every thing and take the rotors in for them to compare AND be prepared to have to reassembly with original parts. Think the rotors are good for two more sets of pads, so have a bit of time. Will have to measure mine to see which ones they are.

Here's the data from the shop manual, which does nothing to solve my problem. Check out the last line for rear disc dimensions.

System...............................front brakes........rear brakes

JB5/JD5 (B=vac/D=Hyd)...11.57"x1.25"......254mmx57mm
JB6/JD6 (B=vac/D=Hyd)...11.57"x1.25".....11.15"x2.75"
JB7/JD7 (B=vac/D-Hyd)....12.50"x1.26".....13.00"x2.50"
JB8 single rear wheel.........12.50"x1.26".....13.00"x3.50" Hyd
JF9 dual rear wheel............13.86"x1.435"...13.58"x1.435" DISC!!!!!

More later.

-Ben

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