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Looking at 1979 SR650 disc swap
- vach
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13 Apr 2008 06:23 #206076
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13 Apr 2008 06:24 #206077
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- Austinroots
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13 Apr 2008 12:05 #206137
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
OK, its official I'm looking for another rotor, another caliper, and the brake line setup for my '77 650B. Anybody out there got the parts I need? Thanks
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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13 Apr 2008 12:21 - 13 Apr 2008 12:37 #206142
by vach
1979 kz650 B. Chicago, Illinois
Replied by vach on topic Looking at 1979 SR650 disc swap
you probably haev a left handed caliper. it's kind of hard to find the right side.
you can look on ebay under "kz rotors, calipers, splitter." you might find a deal on 2 calipers. i got the forks because mine were in bad shape. calipers, splitter rotors
you really should have the same rotors on the bike.
you can look on ebay under "kz rotors, calipers, splitter." you might find a deal on 2 calipers. i got the forks because mine were in bad shape. calipers, splitter rotors
you really should have the same rotors on the bike.
1979 kz650 B. Chicago, Illinois
Last edit: 13 Apr 2008 12:37 by vach.
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13 Apr 2008 13:11 - 13 Apr 2008 13:12 #206145
by OnkelB
77 KZ 650 B1, 82 GPz 1100 B2.
Replied by OnkelB on topic Looking at 1979 SR650 disc swap
The stock 77 650 B caliper is symmetrical, the bleeder nipple is sitting in the center of the caliper and the caliper can be used on either side, you just remove the two bolts and flip the mounting bracket over to mount it on the right side.
As for the splitter/brake light switch you can either get a dual brake light switch from a KZ 1000 or use a double length banjo bolt (pic below) that has two sets of holes and will feed two banjos - don´t forget to put an extra copper washer between the banjos.
While you´re at it it would also be a good idea to get a 5/8" master cylinder - a 1/2" mc will work with a dual disc setup, but if you grab too much front brake it´s real easy to lock the front wheel up, I learned the hard way.
As for the splitter/brake light switch you can either get a dual brake light switch from a KZ 1000 or use a double length banjo bolt (pic below) that has two sets of holes and will feed two banjos - don´t forget to put an extra copper washer between the banjos.
While you´re at it it would also be a good idea to get a 5/8" master cylinder - a 1/2" mc will work with a dual disc setup, but if you grab too much front brake it´s real easy to lock the front wheel up, I learned the hard way.
77 KZ 650 B1, 82 GPz 1100 B2.
Last edit: 13 Apr 2008 13:12 by OnkelB.
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13 Apr 2008 19:37 #206240
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks for all the info, now another question, is there a way to keep my rear spoke wheel and mount a disc brake?
Thanks :huh:
Thanks :huh:
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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13 Apr 2008 20:03 #206257
by gorack
Replied by gorack on topic Looking at 1979 SR650 disc swap
yes you have too make a mount for the master cylinder, then find kz1000 or 750 twin rear wheel and caliper axel. and sprocket carrier, and a swing arm with a brake torqoe arm it has to be off a 1000\750 they use a 20mm axel the 650 only has 17mm
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16 Apr 2008 20:55 #207044
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks OnkelB, I've been reading up on things and will be looking for a 5/8 master. I am looking for a dual disc setup. I'm watching one on ebay thats at $50 + shipping, thats for both brakes, lines and a splitter. Do you think thats decent ballpark price?
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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16 Apr 2008 21:00 #207047
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks gorack I think I'm just gonna concentrate on the front for now. However when I get to upgrade the rear brakes I'll definitely take your advise.
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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16 Apr 2008 21:03 #207048
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks NONB but the parts bike I was looking at got too expensive. Seems like its good business to snatch up these old bikes and chop em up for profit.
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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16 Apr 2008 21:06 #207049
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks for the advise Retro Rocket.
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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16 Apr 2008 21:08 #207051
by Austinroots
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
Replied by Austinroots on topic Looking at 1979 SR650 disc swap
Thanks Aesop, checked out some of your threads, look forward to seeing more of your project.
1978 Project 650 SR; 2 bikes and never enough time or $
Asheville, NC
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