Brake caliper parts
Moderator: rztom
- Evans Ward
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- Posts: 1546
- Joined: Sun Jun 07, 2009 6:39 pm
- Location: Macon, GA
Re: Brake caliper parts
Don’t forget about Economy Cycle too for parts as John offers a 10% discount on most items. Discount code is RDTECH. He supplies great customer service and is a supporting member here.
84 RZ350-Toomeys,SCR milled head, stk 26 carbs,300 M, 35 P, stock regrooved needles AS 2.5 turns out,stk air box,Banshee reeds Zeel non-progr CDI,TSRL Program YPVS,alum rad,R6 shock,GV emulators w/RT springs,fork brace,Shindy steering damper.
Re: Brake caliper parts
While looking for caliper rebuild parts I'm finding that they specify UK version only for the 84-85 rz350. Were the US and UK brakes different?
Re: Brake caliper parts
yes different.. call brake crafters or economy cycle.
84 RZ350 Toomey
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
2003 FZ1 Yellow/Black
BULTACO ASTRO
Champion framed Kawasaki F81m
BULTACO SHERP-S Brakeless Dirt tracker
ZUK A-100 w/ FACTORY HOP UP
Re: Brake caliper parts
FWIW I found the OEM seal-only kit while researching my brakes. The XV250 uses the same caliper but different mounting bracket. Turns out they use the same piston kit, but offer the seals separately. Not that you'd want them since Brakecrafters is cheaper and includes a new bleeder etc.
OEM seals only
PN 2JK-W0047-00-00
OEM seals only
PN 2JK-W0047-00-00
Re: Brake caliper parts
Btw, if brake is dragging take the lever off and retry. If wrong or bad lever is used it can be pushing on the piston.
Brass brushes on a dremel are good for cleaning out caliper dust seal areas. Most aren't chromated sadly.
Brass brushes on a dremel are good for cleaning out caliper dust seal areas. Most aren't chromated sadly.
496 Cheetah. TSS PVs, PWK35s, Ignitech, RGV(ish) chassis
Re: Brake caliper parts
Good thought, also, people tend to take-up play with the adjusting screw to the point of brake drag.
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- Posts: 30
- Joined: Sat Dec 01, 2018 12:28 am
- Location: Eastern Sierra
Re: Brake caliper parts
I rebuilt the front calipers on my RZ with aftermarket (K&L?) seal kits maybe 8 years ago. Now both calipers are leaking fluid from the seals. I mention this because in the hundreds of calipers I've rebuilt for customers, I can't remember many (any) that were leaking. They were all just stuck because of the corrosion behind the seals, as brought up earlier here. Leaking fork oil can make the seals swell too.
The OE seals seem to last forever except for being mangled by the pressure from the corrosion in the grooves. Whichever aftermarket ones I used must have been of an inferior material. I'm going with the Yamaha XV250 ones, they are worth the money to me. If you keep the fluid fresh, the calipers keep working almost forever anyway. It's the old, moisture filled fluid that causes most of the problems.
Also, using a brake assembly grease is better than using brake fluid. You don't want brake fluid around the dust seal, which is exposed to the air and water. That will encourage corrosion buildup in that area. The assembly grease helps seal the seal area from outside air and water. Just make sure the grease you use is specifically for the pistons and seals, anything else will cause the seals to swell.
https://www.pegasusautoracing.com/produ ... ecID=11559
The OE seals seem to last forever except for being mangled by the pressure from the corrosion in the grooves. Whichever aftermarket ones I used must have been of an inferior material. I'm going with the Yamaha XV250 ones, they are worth the money to me. If you keep the fluid fresh, the calipers keep working almost forever anyway. It's the old, moisture filled fluid that causes most of the problems.
Also, using a brake assembly grease is better than using brake fluid. You don't want brake fluid around the dust seal, which is exposed to the air and water. That will encourage corrosion buildup in that area. The assembly grease helps seal the seal area from outside air and water. Just make sure the grease you use is specifically for the pistons and seals, anything else will cause the seals to swell.
https://www.pegasusautoracing.com/produ ... ecID=11559
The addiction:
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
Re: Brake caliper parts
Interesting. Even the nastiest brakes I've ever seen were not leaking, just super corroded.Semi Oldguy wrote: ↑Mon Dec 10, 2018 8:04 pm I rebuilt the front calipers on my RZ with aftermarket (K&L?) seal kits maybe 8 years ago. Now both calipers are leaking fluid from the seals. I mention this because in the hundreds of calipers I've rebuilt for customers, I can't remember many (any) that were leaking. They were all just stuck because of the corrosion behind the seals, as brought up earlier here. Leaking fork oil can make the seals swell too.
The OE seals seem to last forever except for being mangled by the pressure from the corrosion in the grooves. Whichever aftermarket ones I used must have been of an inferior material. I'm going with the Yamaha XV250 ones, they are worth the money to me. If you keep the fluid fresh, the calipers keep working almost forever anyway. It's the old, moisture filled fluid that causes most of the problems.
Also, using a brake assembly grease is better than using brake fluid. You don't want brake fluid around the dust seal, which is exposed to the air and water. That will encourage corrosion buildup in that area. The assembly grease helps seal the seal area from outside air and water. Just make sure the grease you use is specifically for the pistons and seals, anything else will cause the seals to swell.
https://www.pegasusautoracing.com/produ ... ecID=11559
A little while back I did extensive research on the correct brake caliper lube and determined that silicone paste was suitable as brake seals are made from EPDM. I have now used it on multiple calipers with no issues. I put it on the seals, piston, a thin layer inside the piston, etc. and it keeps things from corroding. The one spot you don't want to lube (or at least be very light on) is the surface of the pressure seal, because it needs to grip the piston in order to pull it back into the caliper after you pull the lever.
You can buy a lifetime supply in a bottle. I use it on all plastic/rubber parts that need lubrication. However you don't want to use silicone grease on silicone o-rings :)
https://www.3m.com/3M/en_US/company-us/ ... 053&rt=rud
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- Posts: 30
- Joined: Sat Dec 01, 2018 12:28 am
- Location: Eastern Sierra
Re: Brake caliper parts
I wonder if silicone dielectric grease would be suitable. I have way more than a lifetime supply of that!
Research is in order!
Research is in order!
The addiction:
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
Re: Brake caliper parts
I never needed to go hunting for special caliper grease since the Yamaha OEM kit comes with a cute little packet of pretty pink brake grease.
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- Posts: 30
- Joined: Sat Dec 01, 2018 12:28 am
- Location: Eastern Sierra
Re: Brake caliper parts
Also, thanks to kobra for the great find on the XV250 seal kit. Doubt if I would have found that on my own.
But... cute pink grease for the RZ? Probably better for use on the 250 Virago.
But... cute pink grease for the RZ? Probably better for use on the 250 Virago.
The addiction:
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
Re: Brake caliper parts
Yep, same thing!Semi Oldguy wrote: ↑Mon Dec 10, 2018 8:53 pm I wonder if silicone dielectric grease would be suitable. I have way more than a lifetime supply of that!
Research is in order!
-
- Posts: 30
- Joined: Sat Dec 01, 2018 12:28 am
- Location: Eastern Sierra
Re: Brake caliper parts
Great, thanks!
The addiction:
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
85 RZ350 Bought it new!
76 GT750 Project
73 H2 Project
75 GT185 Project
03 MG V11 LeMans
90 CB1 It runs
12 650GS Runner
87 K75C Should run forever
02 1150GS Used to work
Re: Brake caliper parts
All this talk made me think of my underwhelming brakes now my project is back on track..
Rush of blood to the head and I hit buy on some Triumph 600 calipers. Known mod for RZs.
But different spacing from RGV forks I have. Bugger. Wrong Nissins. Oh well found some RF900 ones.
Rush of blood to the head and I hit buy on some Triumph 600 calipers. Known mod for RZs.
But different spacing from RGV forks I have. Bugger. Wrong Nissins. Oh well found some RF900 ones.
496 Cheetah. TSS PVs, PWK35s, Ignitech, RGV(ish) chassis
Re: Brake caliper parts
Really impressed with these BrakeCrafters bits.