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PostPosted: Sun Sep 06, 2015 12:39 pm 
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Hello all, anybody have any recommendations for or where to find rear shock seals for the stock 74 elsinore shocks?


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PostPosted: Sun Sep 06, 2015 5:06 pm 
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Joined: Sun Nov 30, 2008 12:10 pm
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Location: Connecticut, USA
viewtopic.php?f=21&t=2576&hilit=showa+360

Ray

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'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


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PostPosted: Thu Oct 01, 2015 9:49 pm 
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Have good resolution I have not read yet It's really rare


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PostPosted: Tue Jan 26, 2016 3:14 pm 
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Joined: Wed Oct 21, 2015 4:03 pm
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Sorry that I have to warm up that shock seal discussion again. Restoring a 1974 CR250M I have to rebuild the original SHOWA shocks (10 mm rod) and of course I will have to replace the seals. Of course I already read everything the board search came up with, but unfortunately most of the promising posts, links and adresses are pretty old and lead to nowhere.

Is there any actual source for getting those seals you know? If not, we should seriously think about launching a remanufacturing initiative here.

markus

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PostPosted: Tue Jan 26, 2016 7:54 pm 
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Location: Connecticut, USA
It's possible that single Honda 91207-580-003 or 91207-580-015 seals will work, at least for a while (I haven't tried it). These are not shock seals - they're rotary-shaft oil pump seals. Two of them face-to-face should work OK, but some machining will be required for that (which is still a whole lot cheaper than remanufacturing).

http://www.ebay.com/itm/NOS-Honda-Oil-S ... 1094051169

Ray

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'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


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PostPosted: Wed Jan 27, 2016 10:36 pm 
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Joined: Fri Jun 02, 2006 11:12 pm
Posts: 159
Location: Salinas, CA
Those spinning shaft seals won't work for more than a few laps until the lips rip apart.

What will work is a set of 3/8"x3/8"x1" hydraulic poly seals. You can get these from your local hydraulic equipment supplier. These seals have no metal parts, no casing, no lip springs. They are just rubber and are a pain to install. They have to be pressed into the seal head then the compression of being squeezed in there provides the pressure against the shaft to seal - like a lip spring would do on a normal steel casing seal. The trouble is, that once you press the seal into the seal head, well then you can't get the shaft into the seal.

Insert the shaft into the seal first, then press the seal into the seal head. You'll have to rig up a clever support on your press to do it, and you might destroy a few seals first. You'll get it though, and once they are installed they last just fine as they are made for in-out shafts like these.

Good luck,
Jon


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