Author Topic: Filling dampening rod holes  (Read 3036 times)

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Offline rangelov

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Re: Filling dampening rod holes
« Reply #25 on: March 12, 2011, 02:28:54 PM »
That material seems like Bakelite because it is old, hard and been immersed in oil. the new rings from Honda are white and softer. That split in there has a purpose and that is to increase the OD of the ring so it is larger than the top of the rod OD. Don't try and glue it together..it has to flex.


The split is there to minimize blow-by and make it easier to install than a solid sealing ring..  It doesn't differ much from straight end gap, other than it minimizes the space for  blow-by to occur.  Scarf cut Teflon seals have substituted for iron and aluminum sealing rings that have spring tension to hold them tight against the larger bore (OD).  Teflon is soft enough that it will cold flow, shape itself to the bore, thus it will be a little larger than the bore would indicate.

Teflon generally doesn't wear bores, but doesn't seal as well as a conventional rigid sealing ring.  Cast iron and aluminum sealing rings will seal well.  They do not wear the bore unless the oil breaks down or the conditions and temperatures are severe.
« Last Edit: March 12, 2011, 02:31:38 PM by rangelov »
http://forums.sohc4.net/index.php?topic=76835
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CB750K4, Boss maroon metallic, 836cc, RC Engrg 4 into 1, Forks by Frank, air assisted front forks,  JC Whitney 16" rear.

Offline wannabridin

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    • 1976 CB750K, under construction:
Re: Filling dampening rod holes
« Reply #26 on: March 12, 2011, 04:56:54 PM »
Oh I know all this range, thanks for pointing it out!  I worked for that company but got laid off 2 weeks before christmas, sooo no ties with them!  I figure another rod with an intacseal will do just fine for me!  If I feel a problem, I'll source the new rings...

Thanks for all yalls help so far!!
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline rangelov

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Re: Filling dampening rod holes
« Reply #27 on: March 16, 2011, 12:55:36 PM »
G,

I feel for you. I have been unemployed for 26 months; Manufacturing Engineer at Ford...

Check this place out.
http://www.mfpseals.com/

They are national and have their HQ nearby.  Their closest branch to you is in Houston, near my old stomping grounds.  Find what you need and let me know, I'll get it for you.  They have minimum quantity and pricing limitations, which I can avoid.  I worked with them and still have a connection with the sales people.  Plus I need to get seals for my floor jacks, vacuum pump/brake bleeder and tire machine from them, soon.

Dimitar
« Last Edit: March 16, 2011, 12:59:03 PM by rangelov »
http://forums.sohc4.net/index.php?topic=76835
-----------------------------------------------
CB750K4, Boss maroon metallic, 836cc, RC Engrg 4 into 1, Forks by Frank, air assisted front forks,  JC Whitney 16" rear.

Offline wookie

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Re: Filling dampening rod holes
« Reply #28 on: March 16, 2011, 04:25:52 PM »
When i installed my racetech emulators the instructions said some forks have the rebound holes while others may not and to leave them stock if applicable.  There was no mention of filling them, just checked the install instructions again.