Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
 |
« on: October 28, 2018, 08:01:33 AM » |
|
Can someone verify if the same rebuild kits are applicable for ALL versions of the Valkyrie? The Honda part numbers are different and aftermarket sites aren't consistent on this.
I'm looking to change the pistons as well. Any recommendations for a Rear Rebuild Kit?
Thanks!!
Update: Here's what I found... please let me now if it's incorrect
Interstate Brake Caliper Pistons are 25.4x31mm (Dia/Len)
Honda Part # 45107-MN5-006 (45107-KCW-880)
K&L Part # 32-2305
K&L Seals Part # 32-1446
Standard/Tourer Brake Caliper Pistons are 27x31.1mm (Dia/Len)
Honda Part # 45107-ML4-006
K&L Part # 32-2295
K&L Seals Part # 32-1207
|
|
|
|
« Last Edit: October 28, 2018, 08:26:44 AM by Jersey »
|
Logged
|
Jersey
|
|
|
hubcapsc
Member
Posts: 16779
upstate
South Carolina
|
|
« Reply #1 on: October 28, 2018, 08:51:11 AM » |
|
I like to get OEM caliper parts. Interstate rear calipers are different from Tourers and Standards, so they are supposed to have different part numbers  -Mike |
|
|
|
|
Logged
|
|
|
|
|
da prez
|
|
« Reply #2 on: October 28, 2018, 12:06:55 PM » |
|
Honda rear caliper seals-06451-GE2-405 front 06431-MA3-405. I just bought a set from Honda.
Fronts and rear was just under $40.00.
If your pistons are not pitted or scored , buff them out. I chuck them in my lathe and use steel wool to polish them. Be sure to clean the corrosion out of the caliper seal grooves. Do not use brake assembly lube to put them back together. Use dot four brake fluid.
da prez
|
|
|
|
|
Logged
|
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #3 on: October 28, 2018, 12:12:29 PM » |
|
Honda rear caliper seals-06451-GE2-405 front 06431-MA3-405. I just bought a set from Honda.
Fronts and rear was just under $40.00.
If your pistons are not pitted or scored , buff them out. I chuck them in my lathe and use steel wool to polish them. Be sure to clean the corrosion out of the caliper seal grooves. Do not use brake assembly lube to put them back together. Use dot four brake fluid.
da prez
Agreed. On inspection the postings had pitting so I opted for replacement. I had done the fronts about a year ago so this should alleviate any issues for awhile. Thanks!! |
|
|
|
|
Logged
|
Jersey
|
|
|
|
Paladin528
|
|
« Reply #4 on: October 31, 2018, 09:47:39 AM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
|
|
|
|
|
Logged
|
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #5 on: October 31, 2018, 10:13:57 AM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
Yep. I ended up ordering the K&L kit plus their pistons. Research showed all high reviews on these. |
|
|
|
|
Logged
|
Jersey
|
|
|
|
indybobm
|
|
« Reply #6 on: October 31, 2018, 12:02:28 PM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
On STDs/Tourers the front/rear brake pistons are the same size. The rear brake caliper pistons on an Interstate are smaller to generate more stopping power because of the greater weight of the Interstate. |
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
mello dude
Member
Posts: 951
Half genius, half dumazz whackjob foole
Dayton Ohio
|
|
« Reply #7 on: October 31, 2018, 04:17:30 PM » |
|
Its not all that hard to cherry pick the parts you want to use for your rebuild. OEM is the way to go... https://www.partzilla.com/catalog/honda/motorcycle |
|
|
|
|
Logged
|
* There's someone in my head, but it's not me.......
* Mr. Murphy was an optimist....
* There's a very fine line between Insanity and Genius.....
* My get up and go, must have got up and went.....
|
|
|
|
Cracker Jack
|
|
« Reply #8 on: October 31, 2018, 08:55:25 PM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
On STDs/Tourers the front/rear brake pistons are the same size. The rear brake caliper pistons on an Interstate are smaller to generate more stopping power because of the greater weight of the Interstate. One says the interstate rears are larger and one says the interstate rears are smaller. I am not sure but larger pistons would be required to give greater stopping power for a given pedal pressure. |
|
|
|
|
Logged
|
|
|
|
hubcapsc
Member
Posts: 16779
upstate
South Carolina
|
|
« Reply #9 on: November 01, 2018, 02:59:54 AM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
On STDs/Tourers the front/rear brake pistons are the same size. The rear brake caliper pistons on an Interstate are smaller to generate more stopping power because of the greater weight of the Interstate. One says the interstate rears are larger and one says the interstate rears are smaller. I am not sure but larger pistons would be required to give greater stopping power for a given pedal pressure. Interstate rear pistons are smaller, though... -Mike |
|
|
|
|
Logged
|
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #10 on: November 01, 2018, 03:37:40 AM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
On STDs/Tourers the front/rear brake pistons are the same size. The rear brake caliper pistons on an Interstate are smaller to generate more stopping power because of the greater weight of the Interstate. One says the interstate rears are larger and one says the interstate rears are smaller. I am not sure but larger pistons would be required to give greater stopping power for a given pedal pressure. Interstate rear pistons are smaller, though... -Mike Correct. Maybe someone knows better, but I'm wondering would smaller pistons result in more pressure on the pads? Any familiar with fluid dynamic theory? |
|
|
|
|
Logged
|
Jersey
|
|
|
hubcapsc
Member
Posts: 16779
upstate
South Carolina
|
|
« Reply #11 on: November 01, 2018, 04:04:53 AM » |
|
The rear pistons are larger than the front so the kits do not work for all 3 calipers on an interstate.
make sure to get the rear.
Use the OEM parts from honda. if not an interstate then get the piston from Redeye.
I did my front earlier this year and will be doing the rear soon ALL OEM parts
On STDs/Tourers the front/rear brake pistons are the same size. The rear brake caliper pistons on an Interstate are smaller to generate more stopping power because of the greater weight of the Interstate. One says the interstate rears are larger and one says the interstate rears are smaller. I am not sure but larger pistons would be required to give greater stopping power for a given pedal pressure. Interstate rear pistons are smaller, though... -Mike Correct. Maybe someone knows better, but I'm wondering would smaller pistons result in more pressure on the pads? Any familiar with fluid dynamic theory? The innernet says this about it: The amount of force a hydraulic cylinder can generate is equal
to the hydraulic pressure times the effective area of the cylinder.
(Effective Area is the surface area of the piston face in square inches.)-Mike |
|
|
|
|
Logged
|
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #12 on: November 01, 2018, 04:27:13 AM » |
|
Interesting. So it's hydraulic theory then? Wonder why the slightly smaller piston for the I/S since it seems to result in less effective pressure being applied to the rotor?
|
|
|
|
|
Logged
|
Jersey
|
|
|
|
indybobm
|
|
« Reply #13 on: November 01, 2018, 04:52:11 AM » |
|
On the STD/Tourer vs the Interstate, the same amount of rear pedal travel gives the same amount of fluid to the rear caliper. On the Interstate, this means that with the smaller piston, the pistons travels farther equaling more pressure applied to the pads.
|
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #14 on: November 01, 2018, 04:59:38 AM » |
|
On the STD/Tourer vs the Interstate, the same amount of rear pedal travel gives the same amount of fluid to the rear caliper. On the Interstate, this means that with the smaller piston, the pistons travels farther equaling more pressure applied to the pads.
trying to follow you on this... so a smaller piston will travel 'further' given the fluid pressure is the same? |
|
|
|
|
Logged
|
Jersey
|
|
|
|
indybobm
|
|
« Reply #15 on: November 01, 2018, 05:05:27 AM » |
|
Fluid displaces the piston. The smaller the area of the piston, the farther it will travel with the same amount of fluid displacing it. indybobm logic 101.
|
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
|
Cracker Jack
|
|
« Reply #16 on: November 01, 2018, 07:09:29 AM » |
|
On the STD/Tourer vs the Interstate, the same amount of rear pedal travel gives the same amount of fluid to the rear caliper. On the Interstate, this means that with the smaller piston, the pistons travels farther equaling more pressure applied to the pads.
" the pistons travels farther equaling more pressure applied to the pads"That statement is just wrong. In this case, travel does not equal pressure. indybobm logic 101 is seriously flawed in this case.  The statements from the internet posted by hubcapsc above is correct! |
|
|
|
« Last Edit: November 01, 2018, 07:13:09 AM by Cracker Jack »
|
Logged
|
|
|
|
|
|
Skinhead
Member
Posts: 8727
J. A. B. O. A.
Troy, MI
|
|
« Reply #18 on: November 01, 2018, 07:58:42 AM » |
|
Hubcap is correct, force is determined by effective area of the piston. For a given pressure, say 100psi, a 1 square inch piston would exert 100 lbsf. a 2 si piston would exert 200 lbsf.
|
|
|
|
|
Logged
|
 Troy, MI |
|
|
|
indybobm
|
|
« Reply #19 on: November 01, 2018, 08:38:08 AM » |
|
It is an interesting discussion and an interesting article posted by Jersey. In the case of the Valkyrie, we are only talking about the difference in caliper piston diameter of the STD/Tourer as compared to the Interstate. Honda must have a valid reason for changing the caliper piston diameter in the Interstate.
|
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
|
indybobm
|
|
« Reply #20 on: November 01, 2018, 09:14:52 AM » |
|
It's been fun anyway.  |
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
Jersey
Member
Posts: 545
VRCC #37540
Southern Maryland
|
|
« Reply #21 on: November 01, 2018, 09:48:07 AM » |
|
It's been fun anyway. Argeed! |
|
|
|
|
Logged
|
Jersey
|
|
|
|
