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Author Topic: CB750K5 -> K7/8 Front Brake Questions  (Read 1541 times)

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Offline moaralpha

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CB750K5 -> K7/8 Front Brake Questions
« on: August 06, 2017, 05:43:59 PM »
So I am looking to upgrade the front brake to the EBC steel rotor and noticed it only fits K7/8 front calipers from what I can tell.

To make it fit my K5 should I only need a K7/8 caliper arm/bracket and caliper, or are more/different parts required?

Sidenote: I can't get the forum search function to work. Is it broken?
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Offline spotty

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #1 on: August 06, 2017, 07:25:24 PM »
AFAIK the only difference between early and K8 calipers is the pads are different, so the disc should fit no probs, it should be the same bolt pattern to the hub as earlier models
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Offline scottly

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #2 on: August 06, 2017, 10:36:39 PM »
The K7/8 pivot pin and bracket are the same as the K5, so you only need the caliper and arm. The late caliper/arm mounts the piston and pad further from the center of the axle, and sweeps a more narrow band on the rotor, giving more clearance.
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Offline moaralpha

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #3 on: August 06, 2017, 10:42:57 PM »
Great thank you! Time to search fleabay for another winter project!
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Offline spotty

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #4 on: August 07, 2017, 02:46:25 PM »
well there you go, I too have learned something today
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Offline flybox1

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #5 on: August 07, 2017, 03:02:40 PM »
Notice the offset of the piston side of the caliper.  These are the best i could find.

 

Early
vs
Late


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Offline spotty

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #6 on: August 07, 2017, 06:42:54 PM »
you'd think after using that crap design for years they'd have done an update that was worth the effort (like using the calipers they were already using on wings) instead of just updating a flawed design to a newer flawed design
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Offline moaralpha

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #7 on: August 08, 2017, 12:40:18 PM »
Quote from: flybox1 on August 07, 2017, 03:02:40 PM
Notice the offset of the piston side of the caliper.  These are the best i could find.

 

Early
vs
Late



The early one was flush with the caliper arm? Just making sure so I buy the right one!

http://forums.sohc4.net/index.php/topic,166526.0.html

I think he has them labeled backwards?
« Last Edit: August 08, 2017, 12:42:15 PM by moaralpha »
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Offline flybox1

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #8 on: August 08, 2017, 12:42:08 PM »
Just email or PM Godffery (Jeff)  He has great products, and will get you the one you need.

http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Parts+and+service/
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Offline moaralpha

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #9 on: August 08, 2017, 02:00:29 PM »
Do you have his username?
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Offline flybox1

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #10 on: August 08, 2017, 02:19:42 PM »
Godffery
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline moaralpha

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #11 on: August 08, 2017, 02:36:21 PM »
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Offline HondaMan

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #12 on: August 08, 2017, 09:30:41 PM »
The later (F0/F1/F2/F3/K7/K8) disc calipers had a smaller disc under them, and they had anti-squeal (nylon) rings behind the pucks. The pads are a different type, too.
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Offline scottly

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Re: CB750K5 -> K7/8 Front Brake Questions
« Reply #13 on: August 08, 2017, 10:54:10 PM »
Quote from: moaralpha on August 08, 2017, 12:40:18 PM

http://forums.sohc4.net/index.php/topic,166526.0.html

I think he has them labeled backwards?
No, they appear to be labeled correctly.
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