collapse

www.dimecitycycles.com

www.cognitomoto.com

https://www.townmoto.com/collections/vanson-leathers

www.speedmotoco.com

www.CITYLIMITMOTO.com

www.jadusmotorcycleparts.com

www.lostapostlejewelry.com

www.sparckmoto.com

www.pistonsociety.com


Author Topic: 1980 CB750F rear brake piston: 41mm?  (Read 295 times)

Offline enterlance

  • Posts: 40
1980 CB750F rear brake piston: 41mm?
« on: Mar 16, 2019, 16:21:20 »
Hi, when rebuilding my cb750F rear brake caliper I found that the rear brake piston is taller than the ones for the front (41mm vs 35mm) due to having thinner brake pads.

I bought 3 sets of EBC brake pads and new 35mm pistons for the brake calipers since I didn't know this until I disassemble them.

Can I fit a 35mm Piston into the caliper with normal thickness brake pads? Can't find the 41mm piston anywhere. HELP!

Online pidjones

  • Posts: 778
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #1 on: Mar 16, 2019, 22:06:11 »
A lot of CB750F 79-80 brake parts match GL1000s. Try here: http://www.wingovations.com/stainless-steel-brake-pistons/4588600239
"Love 'em all.... Let God sort 'em out!"

Offline enterlance

  • Posts: 40
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #2 on: Mar 26, 2019, 16:10:49 »
Thanks, after carefully examine the piston size (38.10mm x 41.00mm), I didn't find anyone matches the size on the website lol.

Tried to get rid of the rust of the piston but it obviously not salvageable...

Online Jimbonaut

  • DTT BOTM WINNER
  • *
  • Posts: 1660
    • Lost Apostle
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #3 on: Mar 26, 2019, 16:31:50 »
Get in touch with Mark at BrakeCrafters.com  He's an absolute legend and has helped me out no end in the past with all things brakes.  Tell him James from Montreal sent you, he's your guy
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline enterlance

  • Posts: 40
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #4 on: Mar 26, 2019, 20:51:28 »
Thanks, I will definitely talk to him to solve this mystery lol.

Online pidjones

  • Posts: 778
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #5 on: Mar 27, 2019, 12:06:29 »
Thanks, after carefully examine the piston size (38.10mm x 41.00mm), I didn't find anyone matches the size on the website lol.

Tried to get rid of the rust of the piston but it obviously not salvageable...
So, piston #1 (38.1x41.3) won't fit? Certain of your measurement? And, taking .3mm off on a lathe would tke 5 minutes.
"Love 'em all.... Let God sort 'em out!"

Offline enterlance

  • Posts: 40
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #6 on: Mar 27, 2019, 21:07:03 »
my measurement is exactly 41mm +-0.02mm, it seems a little bit taller and parts number won't match.

Offline enterlance

  • Posts: 40
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #7 on: Apr 04, 2019, 20:24:54 »
Get in touch with Mark at BrakeCrafters.com  He's an absolute legend and has helped me out no end in the past with all things brakes.  Tell him James from Montreal sent you, he's your guy

Emailed and asked them about this. Ordered both brake pads and 41mm pistons, they fit great! Thank you!

Online Jimbonaut

  • DTT BOTM WINNER
  • *
  • Posts: 1660
    • Lost Apostle
Re: 1980 CB750F rear brake piston: 41mm?
« Reply #8 on: Apr 04, 2019, 20:47:14 »
Emailed and asked them about this. Ordered both brake pads and 41mm pistons, they fit great! Thank you!
Right on, glad it worked out  8)
"I'm telling you Donnie, nuthin' but nuthin' but right"