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Old 05-22-2010, 09:38 AM   #1
arbit3r
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Brake caliper upgrade

I recently sold my 91 cbr 600 F and bought myself a 97 Srad. The first thing i noticed was how bad the brakes were, i mean the stopping power was ok but the lever travel was terrible. I bled the brakes with over a liter of fluid, the lines are already braided goodridges. I recently attempted to clean out the caliper pistons and noticed the seals were quite old and starting to perish. One even tore and started leaking fluid.

Looking at caliper seal kits, they are going for about 50 for both front calipers. For this price i can get used calipers off Ebay.

I guess my question is, what brake calipers will fit a 97 SRAD? Is it worth rebuilding these or getting some Nissins or other equivilents that might be a better replacement?

Also is it worth replacing the master cylinder?


Im sorry if this has already been answered somewere before, i have had a quick search but could not find anything specific.
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Old 05-22-2010, 10:44 AM   #2
lonner
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Re: Brake caliper upgrade

do a seal renew on all the seals and you will have superb binders again.


i assume you now how to do this properly as doing it badly is dangerous and false economy.


all 6 pots with 90mm centres fit (bolt holes)

stick with the 4's if you can as they are plenty good enough callipers for the 600

the 6 pot's can be a bloody pain in the ass to get a good lever.


the 4's are much easier to sort (and cheaper)

Last edited by lonner; 05-22-2010 at 10:50 AM.
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Old 05-22-2010, 10:49 AM   #3
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Re: Brake caliper upgrade

Quote:
Originally Posted by arbit3r View Post
Also is it worth replacing the master cylinder?
imho................yes.
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Old 05-22-2010, 10:54 AM   #4
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Re: Brake caliper upgrade

you have braided lines?? with the srads age the stock brake lines would be getting tired for sure..
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Old 05-22-2010, 11:09 AM   #5
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Re: Brake caliper upgrade

Ok, thanks for the help. I was unsure if the 6-pots would fit as i thought they were only for the gsxr 750 slingshots with the upsidedown forks. I've seen a few of these go for decent prices so if i find a set which is not a huge amount more then the seals, i will go for that as i can always sell the current 4-pots as spares or repairs and get some of the money back.

As for MC's what would you recommend? Im not looking to spend a huge amount, the brembo's are way over my price range.

Last edited by arbit3r; 05-22-2010 at 11:13 AM.
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Old 05-22-2010, 11:17 AM   #6
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Re: Brake caliper upgrade

newer radial one
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Old 05-22-2010, 11:30 AM   #7
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Re: Brake caliper upgrade

i'm looking for brembo m/c atm on ebay.........you could try these,

http://www.bikersdiscountstore.co.uk...ever-pd-64.php

If not then even a later model m/c should be ok.
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Old 05-22-2010, 11:43 AM   #8
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Re: Brake caliper upgrade

Would something like this work?

http://cgi.ebay.co.uk/Radial-brake-M...item414f019782
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Old 05-22-2010, 11:59 AM   #9
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Re: Brake caliper upgrade

why not a newer gixxer one like

http://cgi.ebay.co.uk/Brembo-Master-...item20b0fd2c54
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Old 05-22-2010, 12:01 PM   #10
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Re: Brake caliper upgrade

I'm guessing it would......not sure about quality though.

Would'nt you need radial calipers and forks for that though.

someome else with more knowledge can maybe chime in.
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Old 05-22-2010, 02:46 PM   #11
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Re: Brake caliper upgrade

Quote:
Originally Posted by arbit3r View Post



no there very inferior quality



good replacement is a brembo MC of a aprillia falco or early rsvr or tuono 99=03 perfect fit and work great

this is on my 12r but there the same as the zook and give a superb lever feel and far more adjustment + bleed nipple at the MC plus they use the same brake switch connections.
paid 35 of ebay







Last edited by lonner; 05-22-2010 at 02:54 PM.
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Old 05-24-2010, 09:50 AM   #12
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Re: Brake caliper upgrade

DO NOT replace the 4 pots with a 6 pot setup. The 4 is the better way to go.
Make sure you have good pads (a HH pad or the like), and get a good brake fluid. Motul 600 I think it is...

Get a radial master from a different bike on EBay. The new gen GSXR stuff should fit, but you might need to change your lines to make the fittings work.

With this, you will have so much stopping power you wont know what to do with it all.

John
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Old 05-24-2010, 10:07 AM   #13
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Re: Brake caliper upgrade

Quote:
Originally Posted by arbit3r View Post
Also is it worth replacing the master cylinder?

YES!!!


All other things being equal (assuming the system is properly bled, good pads, good seals in the calipers), switching out the M.C. for a better quality unit will have the greatest effect on improving braking power and feel.

The master cylinder is the actual pump that is pushing the fluid. That is where all the power and feel is generated from. You could switch out calipers, change rotors and not feel any difference at all. The most monumental change I made to my brake system was throwing on one of these.






Even a radial master cylinder off a late model sportbike should provide an improvement in power and feel over your stocker


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Old 05-30-2013, 12:43 AM   #14
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Re: Brake caliper upgrade

Hey people,
I did not want to start a new thread.
I just got a 97 750 gsxr and the brake lever travel is so bad, not smooth at all, super sticky.
From what I've read in my search is that this is caused by dust gathering in the caliper pistons and a good cleaning should fix this.
Is that correct?
Will the 4 pots from a 97 600 bolt right on and are they a better choice? $100 used.
Are there other options that don't require an adapter?

I know I should get a mc and braided lines but can't I do that right now, I need an inexpensive, fast fix.
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Old 05-30-2013, 03:39 AM   #15
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Re: Brake caliper upgrade

There has been plenty of discussion and threads regarding your questions.
Spend a bit more time searching.

There are also many differing opinions

If it were me, I would try in this order.

1. Bleed brakes and fresh quality dot4 fluid.
2. clean pistons on 6 pots as best you can without disassembly
3. buy and fit M/C rebuild kit for approx. $30 on ebay
4. if still no good I would buy and use the 4 pot 600 calipers. They bolt straight on, are more consistent in performance, have better braking feel/feedback and are cheap.
I use them on my SRAD race bike

Good luck
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Old 05-30-2013, 06:37 AM   #16
dj_smurph
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Re: Brake caliper upgrade

There is a sticky in another subsection about how to clean the callipers. Might be the how to section
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Old 05-30-2013, 12:14 PM   #17
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Re: Brake caliper upgrade

From what I ahve seen with the sticky lever, it is more often the master that causes the problem. The wear on the lever and the piston.

Jon
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Old 05-30-2013, 01:39 PM   #18
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Re: Brake caliper upgrade

Since I've had the bike ive cleaned and rebuilt the callipers, rebuilt the master cylinder but wasn't truley happy until I got the brembo.
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Old 05-30-2013, 01:56 PM   #19
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Re: Brake caliper upgrade

Brembo is the $}{!T

I love mine, such a nice upgrade to the bike.

John
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Old 06-06-2013, 06:25 PM   #20
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Re: Brake caliper upgrade

Hey,
Thanks guy's,

My research here suggests these brakes suck.

If I wanted to upgrade to this
http://www.ebay.com/itm/321137039772...84.m1438.l2648

I assume I would need the $165 adapters form yoyodine.
http://www.yoyodyneti.com/ProductInf...uctid=GSXR-65E

Then still need a new MC for the set up. I read here that I can use a MC from an 04 r1?
http://www.cheapcycleparts.com/oem-p...aster-cylinder
Will it be a straight swap or are there some adapters needed? for 125 bucks it seems better than rebuilding a shitty one.

There really is no simple answer is there.

If there was something for $250 that would replace this set up I would be all over it, but that seems unlikely.

Out of curiosity, will this be a straight swap onto my bike? (perhaps for a winter project)
http://www.ebay.com/itm/08-09-suzuki...b91587&vxp=mtr

Ill take the advice of cleaning the calipers, MC rebuild and bleed lines.

I'll post how it went for others with this problem.

Last edited by krrakt; 06-06-2013 at 10:31 PM.
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