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<blockquote data-quote="Greg Anthony" data-source="post: 23977" data-attributes="member: 1975"><p>I have spoken with John and he thinks he will be able to do what I want done.</p><p></p><p>These parts are Showa fork lower stanchions from a Ducati Monster S4. I am trying to install the damping rod and valves from a Ducati 999 fork into the S4 forks because the 999 fork internals are a better design. The external dimensions of the upper fork tubes are different so the 999 forks will not bolt up directly to my bike (a Ducati GT1000) but the S4 forks will. The way people typically do this modification is to machine out the fork tube holes in the top of the triple tree so the complete 999 forks will fit but I didn't want to do it that way as I was concerned about the strength of the top triple after enlarging the fork holes, the lower fork tubes on the 999 forks are not in the best condition and the fender mounting points are different.</p><p></p><p>Since I had both sets of forks, I disassembled them and realized that if I enlarged the bottom hole in the fork stanchion to fit the compression adjuster bolt for the 999 fork damper I could just install the 999 fork internals into the S4 forks. The diameter is larger because the entire compression valve/adjuster assembly is installed through this hole. On the S4 fork, only the adjuster goes through the hole as the compression valve is non-replaceable and is pinned into the end of the damping tube.</p></blockquote><p></p>
[QUOTE="Greg Anthony, post: 23977, member: 1975"] I have spoken with John and he thinks he will be able to do what I want done. These parts are Showa fork lower stanchions from a Ducati Monster S4. I am trying to install the damping rod and valves from a Ducati 999 fork into the S4 forks because the 999 fork internals are a better design. The external dimensions of the upper fork tubes are different so the 999 forks will not bolt up directly to my bike (a Ducati GT1000) but the S4 forks will. The way people typically do this modification is to machine out the fork tube holes in the top of the triple tree so the complete 999 forks will fit but I didn't want to do it that way as I was concerned about the strength of the top triple after enlarging the fork holes, the lower fork tubes on the 999 forks are not in the best condition and the fender mounting points are different. Since I had both sets of forks, I disassembled them and realized that if I enlarged the bottom hole in the fork stanchion to fit the compression adjuster bolt for the 999 fork damper I could just install the 999 fork internals into the S4 forks. The diameter is larger because the entire compression valve/adjuster assembly is installed through this hole. On the S4 fork, only the adjuster goes through the hole as the compression valve is non-replaceable and is pinned into the end of the damping tube. [/QUOTE]
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