Author Topic: can a CB500 Cam Chain Tensioner Slipper be repaired?  (Read 2605 times)

0 Members and 1 Guest are viewing this topic.

Offline alacrity

  • Expert
  • ****
  • Posts: 929
  • Ride, Optimize, Repeat
can a CB500 Cam Chain Tensioner Slipper be repaired?
« on: April 15, 2013, 04:09:31 PM »
Hey.
So I decided to do a full top end job on this bike that was "done" because I didn't like how much blow by I started getting.  And there was a leak from one of the engine o-rings that was worsening.

Valve stem seals were shot.
Obvious which o-ring was bad when I got it apart.

Here's a pic of my cam chain slipper.  It has flattened in the middel and there's aging/cracking near the end. Hard to find a new one or a used one that isn't just as bad.

Anyone know of a process to at least keep the cracking from getting worse?  Maybe a bit of high temp silicone adhesive (or similar) that stays flexible but also stays in place?

I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.

Offline HondaMan

  • Someone took this pic of me before I became a
  • Really Old Timer ...
  • *******
  • Posts: 13,830
  • ...not my choice, I was nicknamed...
    • Getting 'em Back on the Road
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #1 on: April 15, 2013, 04:24:12 PM »
Hey.
So I decided to do a full top end job on this bike that was "done" because I didn't like how much blow by I started getting.  And there was a leak from one of the engine o-rings that was worsening.

Valve stem seals were shot.
Obvious which o-ring was bad when I got it apart.

Here's a pic of my cam chain slipper.  It has flattened in the middel and there's aging/cracking near the end. Hard to find a new one or a used one that isn't just as bad.

Anyone know of a process to at least keep the cracking from getting worse?  Maybe a bit of high temp silicone adhesive (or similar) that stays flexible but also stays in place?



It is oil-soaked now, so adding anything to it will not work: it will just come off and end up clogging the oil pump. :(
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline alacrity

  • Expert
  • ****
  • Posts: 929
  • Ride, Optimize, Repeat
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #2 on: April 16, 2013, 08:28:05 AM »
Thanks HondaMan.  That makes perfect sense.   So what to do?  There are wear items, there's a dearth of nos pieces remaining in the world, and there doesn't seem to be an aftermarket replacement being made anywhere.  So if w can't repair or purchase replacement.... What can be done?
I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.

Offline iron_worker

  • Master
  • *****
  • Posts: 2,081
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #3 on: April 16, 2013, 08:43:17 AM »
Not cheap but available ... or at least the web site says so.

http://www.cmsnl.com/honda-cb500-500-four-k1-usa_model460/slipper-tensioer_14520323000/

Looks like Servince Honda doesn't have any. Couldn't find it on David Silver Spares either.

IW



Offline alacrity

  • Expert
  • ****
  • Posts: 929
  • Ride, Optimize, Repeat
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #4 on: April 16, 2013, 01:07:55 PM »
Thanks ironworker.  I spoke to DSS and they don't have it, nor so a whole passel of the usual Honda oem suppliers even though several of em list it with a price on their sites. 
:-(

I was hoping to find one close by so I can get the engine buttoned up as opposed o paying a ton and waiting a long time for the piece from holland.

Gotta be a low mileage bike that was crashed and salvaged-stored where this part is in good enough shape to use again... Somehwere
I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.

Online Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,910
  • Bought her new 4/75
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #5 on: April 16, 2013, 01:14:35 PM »
No longer made by Honda. Hopefully you can find a good used one or bite the Netherland bullet. At least there is a picture of what a good one looks like.

On another note Bill/BentOn is parting a 500. Maybe his will be better.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline iron_worker

  • Master
  • *****
  • Posts: 2,081
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #6 on: April 16, 2013, 01:33:42 PM »
I've bought quite a few hard to find pieces from CMSNL and have always been happy with their service. Shipping takes longer obviously but not unreasonably so.

IW

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 13,998
  • CB500 Number 1000036
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #7 on: April 16, 2013, 10:03:38 PM »
Try western hills honda
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline Frostyboy

  • Retired: Never was an
  • Expert
  • ****
  • Posts: 1,227
  • Circa 1951
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #8 on: April 17, 2013, 02:13:43 AM »
Was it DSS in UK you contacted? They're showing 2 in stock.

http://www.davidsilverspares.co.uk/CB500K1-FOUR-1972/part_61441/
Last year I joined a support group for procrastinators.
We haven't met yet.
[CB550F1]

Offline alacrity

  • Expert
  • ****
  • Posts: 929
  • Ride, Optimize, Repeat
Re: can a CB500 Cam Chain Tensioner Slipper be repaired?
« Reply #9 on: May 29, 2013, 10:01:28 PM »
Sorry for the late response.  I contacted DSS in the usa.  But I found one on eBay that was in far better shape than mine so in it went for $20.

:--)

Bike runs great now
I recently restored and sold a 77 cb750f, and am nearly finished with a (former basket case) cb750k5.  This is a place to share, learn and enjoy.  I am grateful to and for 99+% of this site's membership.