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Old 02-20-2012, 03:20 PM   #1
Thayleal
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Master Cylinders

I am shopping for a master cylinder for a second gen SV650s. I am thinking about replacing the one on my track bike and using that one to repair my street SV since it appears the master cylinder is having issues on the 06 SV.

I have looked at the following:

OEM
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Accossato

Any other suggestions?
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Old 02-20-2012, 04:25 PM   #2
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What kind of issues are you having? Have you swapped out to stainless steel brake lines?
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Old 02-20-2012, 04:26 PM   #3
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also maybe upgrade to gsxr or r6/r1. the yami's are made by brembo.
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Old 02-20-2012, 04:30 PM   #4
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what exactly do you mean by "issues"?

Before you go pouring a bunch of money into some fancy pants M/C, try the cheap fixes.

Re-bleed. Better pads. Maybe SS Lines. if your still not convinced then you can branch out.
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Old 02-20-2012, 04:46 PM   #5
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call Motorcycles Unlimited, brake best works good as well, didn't see it on your list.
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Old 02-20-2012, 09:40 PM   #6
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Quote:
Originally Posted by BRYAN View Post
what exactly do you mean by "issues"?

Before you go pouring a bunch of money into some fancy pants M/C, try the cheap fixes.

Re-bleed. Better pads. Maybe SS Lines. if your still not convinced then you can branch out.
I guess I should have gone into more detail. I have rebled the brakes, but I haven't sprung for new pads and stainless lines. The brake fluid level isn't dropping so I do not think it is a leak at the calipers. I was considering doing the following. I have new brake pads and stainless steel lines on the 03 SV and considering upgrading the master on it and using the current master to repair the 06 before I possibly let it go.

Does that sound like master cylinder?
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Old 02-20-2012, 09:55 PM   #7
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Quote:
Originally Posted by Thayleal View Post
I guess I should have gone into more detail. I have rebled the brakes, but I haven't sprung for new pads and stainless lines. The brake fluid level isn't dropping so I do not think it is a leak at the calipers. I was considering doing the following. I have new brake pads and stainless steel lines on the 03 SV and considering upgrading the master on it and using the current master to repair the 06 before I possibly let it go.

Does that sound like master cylinder?
can i assume your dealing with brake sponginess or just overall poor braking?

again, i would opt for some better quality EBC HH pads with some Lines and good fluid.. Unless you're made of money. Then, in that case, buy me a brembo M/C for an 05 zx10 when you get a chance.
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Old 02-20-2012, 09:58 PM   #8
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Quote:
Originally Posted by BRYAN View Post
can i assume your dealing with brake sponginess or just overall poor braking?

again, i would opt for some better quality EBC HH pads with some Lines and good fluid.. Unless you're made of money. Then, in that case, buy me a brembo M/C for an 05 zx10 when you get a chance.
I flushed the system and used EBC brake dot 4 It seems like the brakes brake fine when they are pumped up... and dont bleed off immediately... slow leak down of hydraulic pressure over time...
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Old 02-20-2012, 09:59 PM   #9
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You do know that the master cylinder rebuild kit for an SV only costs about $27 and takes about 30 mins to install with bleeding, right? so you could try this too.

I guess though you are wanting to upgrade the 03 MC for the track? I'm a little confused on what the problem is here? What is the MC on the 06 doing that makes you think its not working properly?

Symptoms of the problem...?
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Old 02-20-2012, 10:05 PM   #10
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Quote:
Originally Posted by Thayleal View Post
I flushed the system and used EBC brake dot 4 It seems like the brakes brake fine when they are pumped up... and dont bleed off immediately... slow leak down of hydraulic pressure over time...
Okay sorry missed this.

Try this. Take a zip tie and pull it tight around the brake lever. Leave it that way overnight. If the lever is soft in the morning and there is no brake fluid that has leaked out anywhere then yeah I would say its something with the MC. Alternatively, you could really quick swap the working one from the 03 to the 06 and see if that solves the problem. Like I said it hardly takes anytime at all and then you would know if that's your problem.
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Old 02-20-2012, 10:10 PM   #11
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Quote:
Originally Posted by CaffeineRacer View Post
You do know that the master cylinder rebuild kit for an SV only costs about $27 and takes about 30 mins to install with bleeding, right? so you could try this too.

I guess though you are wanting to upgrade the 03 MC for the track? I'm a little confused on what the problem is here? What is the MC on the 06 doing that makes you think its not working properly?

Symptoms of the problem...?
I was not aware there was a rebuild kit thank you for the info! THANKS!

The 06 had spongey brakes when I purchased it and assumed it was simply the brake system needed to be flushed and rebled. I completed that and now the brakes pump up hard and work great for a little while but i see a reduction in pressure and have to re-pump them up. The fluid level does not seem to drop and I don't see any fluid buildup anywhere.

This led me to consider an upgrade for the 03 that I am planning on taking to the track which already has SS brake lines, EBC EPFA front brakes and EB HH rear brakes... and using the master cylinder from it to repair the 06. However since a rebuild kit exists that would probably be a cost effective solution and great advice. Can you provide me with a link to one?
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Old 02-20-2012, 10:20 PM   #12
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Here is the part number: 59600-45860

Its called a piston cup set. There is pretty much the piston, rubber cup, spring, and a couple of seals that come together.

Check out ron ayers:

http://www.ronayers.com/ProductDetails/N/687/SKU/796419
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Old 02-21-2012, 09:59 AM   #13
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Old 02-21-2012, 11:16 AM   #14
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Check the rotors for runout. If one is bent it will knock the pads back in the caliper giving you the soggy feeling when you first grab the lever... but it will pump back up and grab fine each time... and show no fluid loss.
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Old 02-21-2012, 11:18 AM   #15
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you bette bring your to this meet.

http://www.motohouston.com/forums/sh...d.php?t=215246
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Old 02-22-2012, 04:38 PM   #16
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You can change to a more aggressive pad like the EBC EPFA's or Vesrah RJL's. SS Lines. Brembo master. High boiling point fluid to help with any brake fade (Motul RBF is what i used) And you'll have a nice setup that will stop very well. those are not the real issues for the SV's though, it's the crappy calipers.

You can get the brake lever nice and firm, but it will always have that little bit of "squish"

I raced SV's for 4 years as novice and expert. won 3 championships on the SV also. the best setup i had for braking was what i listed above.
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Old 02-23-2012, 10:57 AM   #17
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Quote:
Originally Posted by houseofpaint View Post
You can change to a more aggressive pad like the EBC EPFA's or Vesrah RJL's. SS Lines. Brembo master. High boiling point fluid to help with any brake fade (Motul RBF is what i used) And you'll have a nice setup that will stop very well. those are not the real issues for the SV's though, it's the crappy calipers.

You can get the brake lever nice and firm, but it will always have that little bit of "squish"

I raced SV's for 4 years as novice and expert. won 3 championships on the SV also. the best setup i had for braking was what i listed above.
^^^^


also consider the Magura master cylinder upgrade,
now those things are frggn gorgeous
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Old 02-23-2012, 11:04 AM   #18
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Quote:
Originally Posted by Grinchy View Post
^^^^


also consider the Magura master cylinder upgrade,
now those things are frggn gorgeous


All good inputs... the SV I am upgrading already has SS lines, and EPFAs on it... great stopping... I was just considering the master cylinder upgrade since I needed to fix the 06 street SV.

Thanks everyone!
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