colinworth79 Posted April 23, 2022 Share Posted April 23, 2022 I have a pair of yoshimura cams for an oil cooled engine . There not stamped up st1 or st2 but gsf x66 . No markings in the end . They do have the additional oil holes as my other set . Any one come across this before or know what spec they would be ? 1 Quote Link to comment
clivegto Posted April 23, 2022 Share Posted April 23, 2022 @dupersuncmight know. Quote Link to comment
george 1100 Posted April 23, 2022 Share Posted April 23, 2022 In the first pic, there seems to be something stamped above the yoshimura logo. Should be either st1 or st2. Not sure what the x66 relates to. My st2 cams have s04 stamped below the logo. Best way is to measure them up. Put a vernier on them and that will give you a good idea. I'm guessing st1 because they're not drilled Quote Link to comment
colinworth79 Posted April 24, 2022 Author Share Posted April 24, 2022 (edited) @george 1100 it's got gsf above the logo . Yes they are drilled for the additional lobe oiling . My other set are stamped clearly ST1 in the same place as where the stampings are on these . Think I may fit them into one of my spare engines so I can check lift and duration . Edited April 24, 2022 by colinworth79 Quote Link to comment
george 1100 Posted April 24, 2022 Share Posted April 24, 2022 Yep, that's the way to go then you'll know 100% Quote Link to comment
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