1985 VF500F.
My clutch master is leaking badly and the brake is exhibiting signs of future trouble. New masters are cheaper than a rebuild kit. I can find 16mm m/c's easily. The factory sizes are 14 mm for the clutch and 16 mm for the brake. What will happen if I run the 16 mm on the clutch side?
The modulation will be different with a different size piston displacement. Bad? Probably will shorten the travel for full disengagement.
ScottSturgis, 3/27/2017 at 7:46 PM1985 VF500F.
My clutch master is leaking badly and the brake is exhibiting signs of future trouble. New masters are cheaper than a rebuild kit. I can find 16mm m/c's easily. The factory sizes are 14 mm for the clutch and 16 mm for the brake. What will happen if I run the 16 mm on the clutch side?
I wouldn't buy any "new" m/c that was less than a rebuild kit.
Adapt used parts from a newer model. No rebuild and better performance in one fell and inexpensive swoop.
I think I have a master on my 83 750 frame.. You want? Can't cost but 6 to ship.
If you go to Partzilla, and look up the part number for the clutch master piston kit, that will show you all the other bikes that take the same part, and so have the same diameter MC. There's a lot of them. Then get a used MC that looks the same as your old one off eBay.
http://www.partzilla.com/parts/detail/honda/HP-22886-MB0-305.html
Can anyone clarify if these pistons sizes are the same for the 93' 750 (RC36)??
14mm for clutch and 16mm for brake ?
I've never heard of a 16mm master cylinder on a modern Honda--at least not labeled as such. There are: 1/2", 14mm, 5/8", 11/16" and 3/4". Maybe on older models?
Brake is 1/2" on an RC36.
Ciao,
5/8" = 15.875mm
IIRC, my CBR600F4i brake master was a 5/8" size unit. 14mm clutch might beven tough to find in a matching style...
mordantly, 3/29/2017 at 8:38 PMI think I have a master on my 83 750 frame.. You want? Can't cost but 6 to ship.
What's the condition? Is the reservoir window clear?
PM me some pics?
The window is cracked from time. No lever so can't test piston. Good shape housing. Unknown if window is replaceable. Free! Shipping will be pretty cheap. I'll take some pics tomorrow in daylight.
ScottSturgis, 3/27/2017 at 10:46 PM1985 VF500F.
My clutch master is leaking badly and the brake is exhibiting signs of future trouble. New masters are cheaper than a rebuild kit. I can find 16mm m/c's easily. The factory sizes are 14 mm for the clutch and 16 mm for the brake. What will happen if I run the 16 mm on the clutch side?
I would tear down your present master and try to determine why it's leaking. Rebuilding them is not at all difficult. The cheap Chinese replacements on eBay are sketchy. I'd rather spend a little more and rebuild the OEM one if the bore isn't worn out.
mordantly, 4/9/2017 at 10:43 PMThe window is cracked from time. No lever so can't test piston. Good shape housing. Unknown if window is replaceable. Free! Shipping will be pretty cheap. I'll take some pics tomorrow in daylight.
The windows weren't designed to be replaced, but they can be. I have replaced at least a couple dozen of these now. I stock mineral glass windows that can be used to replace the original yellowed, bulging, and cracked ones. PM me if you want the details.
I rebuild these regularly on the '86-87 VFR. $30 K&S (maybe K&L) kit, new window, clean/lube the lever mechanism. Tomk1960 (above) does a nice job on the paint, etc. I also have replacement glass, though not sure of the VF500 size.
Joe in IL
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