Author Topic: 2004 model 4-pot brake upgrade  (Read 9222 times)

Offline jim snyder

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Re: 2004 model 4-pot brake upgrade
« Reply #15 on: August 02, 2011, 09:18:49 pm »
Here's what I did. http://forum.cog-online.org/index.php/topic,28138.0.html You can see em in Vermont in a few days if you are going.


Very nice 2F. Where did you get the rotors and what brand are they? I am fixing to fabricate some of these brackets very soon, as soon as the temperature gets below 100 here in Texas, which should be about november.
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Offline 2fast

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Re: 2004 model 4-pot brake upgrade
« Reply #16 on: August 03, 2011, 07:52:07 am »
Jim,
The rotors are Chinese from these guys http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=310261175803#ht_1077wt_681 and are made for a Yamaha YZF R7. They fit the older model center hole, but the mounting holes need to be drilled out one size.  I don't have many miles on them yet, but by the time I get back from Vermont they will be fully tested.
Brian in Minnesota
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Need Heat Shields for the C-10? 86-93 Front Brake upgrade brackets?  I got em! Click the little green globe under my Avatar on the left.

Offline jim snyder

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Re: 2004 model 4-pot brake upgrade
« Reply #17 on: August 03, 2011, 10:25:38 am »
Jim,
The rotors are Chinese from these guys http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=310261175803#ht_1077wt_681 and are made for a Yamaha YZF R7. They fit the older model center hole, but the mounting holes need to be drilled out one size.  I don't have many miles on them yet, but by the time I get back from Vermont they will be fully tested.


So they will only fit the older model front wheel ?
"Somedays you're the windshield, and somedays you're the bug"
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Offline 2fast

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Re: 2004 model 4-pot brake upgrade
« Reply #18 on: August 03, 2011, 03:38:29 pm »
Brian in Minnesota
Red hair and black leather, my favorite color scheme. Richard Thompson

Need Heat Shields for the C-10? 86-93 Front Brake upgrade brackets?  I got em! Click the little green globe under my Avatar on the left.

Offline Centex

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Re: 2004 model 4-pot brake upgrade
« Reply #19 on: August 03, 2011, 04:01:29 pm »
Brian / Jim - I notice that the rotors you linked above are replacement for the 94-06 Connie, so they are 300mm, not 320mm.

If you want 320mm for exact fit on the 94-06 Connie, look for replacements for the following bikes (among others) which came with 320mm stock and the correct bolt pattern / offset:

93-01 ZX11
00-03 ZX12
Alan in Central Texas
2004 Connie COG 9476
2001 Ducati M750

Offline jim snyder

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Re: 2004 model 4-pot brake upgrade
« Reply #20 on: August 03, 2011, 09:17:21 pm »
Brian / Jim - I notice that the rotors you linked above are replacement for the 94-06 Connie, so they are 300mm, not 320mm.

If you want 320mm for exact fit on the 94-06 Connie, look for replacements for the following bikes (among others) which came with 320mm stock and the correct bolt pattern / offset:

93-01 ZX11
00-03 ZX12

The 94 thru 06 rotors are 300 m/m, 320 would be over size for the stock brackets
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Offline 2fast

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Re: 2004 model 4-pot brake upgrade
« Reply #21 on: August 03, 2011, 09:31:11 pm »
The 94 thru 06 rotors are 300 m/m, 320 would be over size for the stock brackets

True true. I think the better upgrade for the newer models would be just a better caliper.....300 is already a decent size. In my case, the improvement was pretty huge going from a stock 270mm with a single pot to 320mm with 4 pots.
Brian in Minnesota
Red hair and black leather, my favorite color scheme. Richard Thompson

Need Heat Shields for the C-10? 86-93 Front Brake upgrade brackets?  I got em! Click the little green globe under my Avatar on the left.

Offline jim snyder

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Re: 2004 model 4-pot brake upgrade
« Reply #22 on: August 04, 2011, 02:31:00 pm »
True true. I think the better upgrade for the newer models would be just a better caliper.....300 is already a decent size. In my case, the improvement was pretty huge going from a stock 270mm with a single pot to 320mm with 4 pots.

I agree. The biggest improvement is definitely the caliper. I also used the GSXR-750 Tokico calipers with the stock 300m/m rotors. I probably wouldn't go to the 320m/m rotors unless/until my 300's go bad. 
"Somedays you're the windshield, and somedays you're the bug"
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enim57

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Re: 2004 model 4-pot brake upgrade
« Reply #23 on: August 06, 2011, 07:19:09 am »
It's the calipers that make the biggest difference, increasing from 300 to 320 discs will only give a 6.7% increase (torque = force x radius). When I did the upgrade for the earlier models I calculated there is 33% more pad area and 133% more piston area.

So I am looking for info on the 4 pot mod to the older Connies. Cost? Parts needed? Thanks


If you're using the stock size discs of 270mm diameter I can supply brackets to suit Nissin 4 piston calipers, I don't have any in stock at the moment though. See link below:
http://gtr1000.yuku.com/topic/3638/4-piston-brake-calipers

Regards, Russell