Dmnordin Posted September 12, 2011 Share #1 Posted September 12, 2011 The '86 upper fork tube is the same part as the '83 upper fork tube, right? Thanks, Doug Link to comment Share on other sites More sharing options...
Snaggletooth Posted September 12, 2011 Share #2 Posted September 12, 2011 Yep. Link to comment Share on other sites More sharing options...
dingy Posted September 12, 2011 Share #3 Posted September 12, 2011 They do have different p/n's 83 - 26H-23126-00-00 86 - 3JJ-23110-00-00 If you were to replace them both, there would be no problem. There is a valve at the bottom of the inner tube that may have had some internal change to warrant the new P/N. The O.D. is the same. Gary Link to comment Share on other sites More sharing options...
Condor Posted September 12, 2011 Share #4 Posted September 12, 2011 They do have different p/n's 83 - 26H-23126-00-00 86 - 3JJ-23110-00-00 If you were to replace them both, there would be no problem. There is a valve at the bottom of the inner tube that may have had some internal change to warrant the new P/N. The O.D. is the same. Gary If I remember correctly, I looked this up once, and I think you'll find that the tubes (uppers) are the same part number.... Link to comment Share on other sites More sharing options...
dingy Posted September 13, 2011 Share #5 Posted September 13, 2011 If I remember correctly, I looked this up once, and I think you'll find that the tubes (uppers) are the same part number.... Those numbers are from the parts fiche for the upper outer tube.. Gary Link to comment Share on other sites More sharing options...
Condor Posted September 13, 2011 Share #6 Posted September 13, 2011 Those numbers are from the parts fiche for the upper outer tube.. Gary The outer tube is the lower. Just checked 3 different service manuals..'83, 86, and 88... and they all have #23103-1 tube assembly listed. Go figure??? From what I can see the tubes are interchangeable... Link to comment Share on other sites More sharing options...
Snaggletooth Posted September 13, 2011 Share #7 Posted September 13, 2011 I've ran through a few fork tubes over the last few years and I ran across one oddity. The one on the bottom was from the original set out of my '84. If they were the original OEM that were in the bike new, I don't know. (notice the taper at the bottom) The top one is from a set I bought supposedly off an '86. The other two sets I bought were the same as the top one. One set was off an '84 and the other an '87 according to the sellers. Other than the taper, they are identical in all other measurements. Never found a real reason for the taper on the one set other than a suggestion that it may have been an experiment by Yammy on anti-dive flow. Just info Mike Link to comment Share on other sites More sharing options...
dingy Posted September 13, 2011 Share #8 Posted September 13, 2011 I am wrong, but I was right, HUH ?? Below are the correct numbers & they are different from 83 to 86, and I was wrong referring to them as outer tubes. They are Inner tubes. 83 - 26H-23110-00-00 86 - 3JJ-23110-00-00 Gary Link to comment Share on other sites More sharing options...
Condor Posted September 13, 2011 Share #9 Posted September 13, 2011 I am wrong, but I was right, HUH ?? Below are the correct numbers & they are different from 83 to 86, and I was wrong referring to them as outer tubes. They are Inner tubes. 83 - 26H-23110-00-00 86 - 3JJ-23110-00-00 Gary Actually the 26H and 3JJ are assigned when ever there is a change... and it could be nothing more than a color change is made. All 26H's were for the '83VR model year, and it could remain that way all the way to '93 if nothing was ever done to it. I used to have the complete break down of year and model for Yamaha, but lost it in the HD crash. I think?? the 3JJ first appeared in '90?? Maybe... The part number is the 23103-1. Link to comment Share on other sites More sharing options...
Dmnordin Posted September 14, 2011 Author Share #10 Posted September 14, 2011 Thanks so much for your replies! My left inner (upper) on my 83 has a blemish I've been dealing with. It's working OK right now, but it will need to be replaced and I have a line on an 86 upper. Link to comment Share on other sites More sharing options...
Rocket Posted September 15, 2011 Share #11 Posted September 15, 2011 Those numbers are from the parts fiche for the upper outer tube.. Gary What may be found, is that the Mk1 includes the tube bushing & the Mk2 does not. With Franks Forks, it is the same part across the 1st gens 83 - 93. Same for Racetech, on the bushings. Link to comment Share on other sites More sharing options...
MiCarl Posted September 15, 2011 Share #12 Posted September 15, 2011 Actually the 26H and 3JJ are assigned when ever there is a change... and it could be nothing more than a color change is made. All 26H's were for the '83VR model year, and it could remain that way all the way to '93 if nothing was ever done to it. I used to have the complete break down of year and model for Yamaha, but lost it in the HD crash. I think?? the 3JJ first appeared in '90?? Maybe... The part number is the 23103-1. Actually I believe the way it works is any Yamaha part number of the form mmm-23110-nn-nn is a fork inner. It tells you nothing about what it fits. mmm indicates the first model the part was used on. Revisions and variants are when nn-nn stops being 00-00. Link to comment Share on other sites More sharing options...
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