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408 Posts
Have a 99 zl600efi with 50.5 gram weights, 51 degree helix, and a red/white secondary spring and running a yellow/white primary..I really like this setup but am finding that my engagement rpm is around 5200rpm. I thought that I would tone down the backshift by going back to the yellow secondary and it definitely has...I would like to know if 5000rpm+ for engagement is too high?...The original primary spring in there was a pure yellow spring and believe me, I checked several times now changed to yellow/white...Topend rpms are ok at 8500 but how can I lower my engagement rpms?.................. . I also have another zl 600 with a 49 gram weights, 49 degree helix, and yellow/white primary, and yellow secondary and its engagement is around 4500rpm ...Would putting in an orange/white primary bring the rpms down?thanks to all :beer_cheers: