86 Cartridge inside 83 cr480 forks

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2/18/2018 11:35 AM

Ok so I have read the other threads on doing this and they mention having to fabricate a bushing to compensate for the larger hole in the bottom leg where the valving goes. Does anyone have a picture of what this typically looks like? I am wondering how this would seal since it would be made from aluminum?

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When in doubt gas it! It may not cure the problem but it will end the suspense!

2/19/2018 3:38 AM

I have done several sets,89 internals in my 83 250, 89 in an 84 125, the bottoming cones need to be turned down to seat in the lower legs, as far as the spacer for the base valve bolt, just need to fab up a hat type washer, use both sets of copper washers to seal.

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2/19/2018 6:09 AM

Ahh, use both washers. I totally get the picture and will fire up the lathe today!
Thanks

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When in doubt gas it! It may not cure the problem but it will end the suspense!

2/23/2018 8:55 AM

wolfy0067 wrote:

I have done several sets,89 internals in my 83 250, 89 in an 84 125, the bottoming cones need to be turned down to seat in the lower legs, as far as the spacer for the base valve bolt, just need to fab up a hat type washer, use both sets of copper washers to seal.

Sorry Wolfy,
This is an impossable task. 89 USD fork internals in 83 CR conventionals?

Pics or it didn't happen. smile

I assume you ment to say 87/88 forks, but you did type it twice!

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A big thanks goes out to Donnie at Morgantown Powersports and RJ at Beaver Creek Cycles

2/23/2018 9:02 AM

wolfy0067 wrote:

I have done several sets,89 internals in my 83 250, 89 in an 84 125, the bottoming cones need to be turned down to seat in the lower legs, as far as the spacer for the base valve bolt, just need to fab up a hat type washer, use both sets of copper washers to seal.

Whymee wrote:

Sorry Wolfy,
This is an impossable task. 89 USD fork internals in 83 CR conventionals?

Pics or it didn't happen. smile

I assume you ment to say 87/88 forks, but you did type it twice!

CR125 -89 have conventional forks

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2/24/2018 3:50 AM

Guys, I just put 89 internals in my 84 125, it can surely be done, I have all the specs. Really don't want to post a trade secret. I can tell you, turn down the bottoming cone to seat in the older leg cut a hat type wager to adapt the base valve, to this point I have done at least 5 set for my personal rides and friends. Don't throw in the towel yet

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2/24/2018 3:53 AM

I will shoot a picture of my 84 with base valve and spacer

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2/24/2018 5:02 AM

Wertmen or TT if you should perform this mod. PM me I can provide info. Thanks for your support
Hope this settles Werman questioning

Photo

Photo

Photo

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2/24/2018 5:05 AM

BTW this bike is for sale, notice not only the for mod. Carb and intake, this bike has an Ed Brazina modified 86 cylinder and head, this bike will out pull and 83 to 86 out there

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2/24/2018 6:13 AM

wolfy0067 wrote:

I have done several sets,89 internals in my 83 250, 89 in an 84 125, the bottoming cones need to be turned down to seat in the lower legs, as far as the spacer for the base valve bolt, just need to fab up a hat type washer, use both sets of copper washers to seal.

Whymee wrote:

Sorry Wolfy,
This is an impossable task. 89 USD fork internals in 83 CR conventionals?

Pics or it didn't happen. smile

I assume you ment to say 87/88 forks, but you did type it twice!

TTperra wrote:

CR125 -89 have conventional forks

Ohhhh I forgot about the tiddlers!

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A big thanks goes out to Donnie at Morgantown Powersports and RJ at Beaver Creek Cycles

2/24/2018 11:29 AM

Tydog fabbed a clean solution for this, you might prompt him

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Twitter: @ftemoto
Instagram: @mstusiak

2/24/2018 1:31 PM

Yep, that looks like what I did. Fabbed up the bushings and sandwiched it with both copper washers. All together and ready to install.
Thanks guys, this is a great website!

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When in doubt gas it! It may not cure the problem but it will end the suspense!