Author Topic: fork dust seal Q?  (Read 1402 times)

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Offline Don R

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fork dust seal Q?
« on: November 18, 2022, 07:58:09 AM »
 Has anyone tried a Honda 91254-434-003 dust seal in the top of their forks? I found a pair in my random new parts box, my brother probably bought them at some point, they are for 35mm tubes and they drop in the top of the fork where the regular dust boot goes. I haven't been able to test yet to see if they stay in place but it seems like they snap in. Kind of a custom thing, or they might fit under a normal seal for extreme dusty use.

https://www.partzilla.com/product/honda/91254-434-003?msclkid=173b02b0d5eb13fbb76a61c77f3bf405&utm_source=bing&utm_medium=cpc&utm_campaign=TNT_Text%20-%20Honda%20-%20Model%20Parts%20(AOV)&utm_term=91254-434-003&utm_content=Low%20AOV%20Parts%202
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Offline seanbarney41

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Re: fork dust seal Q?
« Reply #1 on: November 18, 2022, 01:02:13 PM »
yeah don, those came stock on 77/78 750f  I have had a couple earlier k bikes over the years that had those fitted...a perfectly functional retrofit if you don't want to use the gaiters
If it works good, it looks good...

Offline BenelliSEI

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Re: fork dust seal Q?
« Reply #2 on: November 19, 2022, 12:02:25 PM »
Those ore on my K7 and K8. Over the years, those bikes do get a few stone chips in the tubes that can eat the seals. I think my ‘75F used them too. Do look nice.....

Offline Don R

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Re: fork dust seal Q?
« Reply #3 on: November 19, 2022, 12:26:12 PM »
 The ones I tried to ask about sit in the top of the fork casting rather than covering the whole end. I didn't set them totally because I intend to test more forks for travel and height. I'll get a pic when I go back out.
 
 I have seen the F type used on the forks and the bottom of the headlight ears to eliminate the gaiters.
 
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Offline BenelliSEI

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Re: fork dust seal Q?
« Reply #4 on: November 19, 2022, 01:29:53 PM »
That style appeared on the first ‘75 GL1000.
« Last Edit: November 20, 2022, 05:28:44 AM by BenelliSEI »

Offline Don R

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Re: fork dust seal Q?
« Reply #5 on: November 19, 2022, 05:19:13 PM »
 These, I didn't seat them yet because I'm building a different set of forks. I posted a Frank pic. He would have been proud.
« Last Edit: November 19, 2022, 05:20:52 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline 70CB750

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Re: fork dust seal Q?
« Reply #6 on: November 20, 2022, 01:54:11 AM »
I have them on Red - the fork is 78F. 
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Offline PeWe

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Re: fork dust seal Q?
« Reply #7 on: November 20, 2022, 05:56:33 AM »
Maybe possible to use both the K7/K8 AND GL1000 type for extra protection? ;D

I bought a little bit cheaper aftermarket K7 style that cracked within 2-3 years. Ordered them 2013.

My previous stock Honda purchased 1980 had no cracks after 10 years of use + 20 years of storage.
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Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
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CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
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http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: fork dust seal Q?
« Reply #8 on: November 22, 2022, 04:44:05 PM »
 PeWe, I also thought using both seals would be a good idea for extreme duty. I pulled 6 pair of forks of the shelf and didn't find one good matching pair of tubes. Some fool ruined the F0 tubes by sawing into each one and all of the 341 forks had wear through the chrome and rust damage near the fork seal area. 
 That makes me wonder what wore through the chrome in the seal area and how much that wear transfers to the lower fork. I haven't seen that wear on early type forks.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.