Triumph TT Special Cylinder Head Modification

This is a head for a 1966 Triumph TT Special that is need of a modification. The bores for the pushrod tubes need to be machined deeper. Follow along as we …


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20 Comments to “Triumph TT Special Cylinder Head Modification”

  1. CompEdgeX says:

    Finally getting to catch a few vids and the prior SNSs. great stuff and liking the bike mods very much. Love jobs like these.

    Colin :-)

  2. TheManLab7 says:

    Are your mills and lathes 3ph?

  3. pursangtriss says:

    Adam, I see you fed your depth with the knee unlocked instead of using the knee locked and using the quill. Have you seen any problems doing this? I usually bring my quill down against my stop and then dial in my depth and use the quill. Thanks.

  4. Deric Kettel says:

    Love this project, I mean anything that has to do with motorcycles is at the top of my list. Nice job Adam!

  5. Just now finding this channel. I'm 22 and an aircraft mechanic by trade, but my father and grandfather were both engineers and I guess their ways transferred to me as well. I really, really enjoy these videos. The knowledge and craftsmanship, though process, perfection dimension-wise, etc. just plum sits right with me being a perfectionist myself. Not everyone can do what you do, as well as you do. I sure wish I could. I hope to get into machining as a hobby one day. Keep the videos coming and thank you for taking the time to do these videos for people like me and all your other followers to enjoy!

  6. Razor Works says:

    Better safe than sorry Adam. Like the carpenter say's, "MEASURE TWICE, CUT ONCE"

  7. harrisevo says:

    Hey Adam Thanks for taking the time on the detailed explanation and showing the set up and alignment. When you work on those one of a kind parts are you nervous? You seem rock steady. ; )

  8. Willopotomas says:

    I'm not sure if anyone else has picked up on this, but the mod appears to have forgotten about the angle of the sealing faces. It's only a few degrees.. They're definitely not parallel as standard. With the head upside-down and the tubes rested in their holes, the tubes should part away from each other. Hope this doesn't cause issues. If they wanted them like this, then I'd be interested to see what else they've done to the barrels. :)

  9. BMWLT55 says:

    The Triumph T120TT was developed here In the US and specially made and imported for American dirt track racing (class C). In the USA TT racing consisted of left and right hand turns with a jump. This bike was an out of the crate ready bike to compete with HD KR flat track bikes. I wish I still had mine.

  10. ed yung says:

    Hi Adam, another great video and actually will be watching this over and over again as I begin to tackle the project I mentioned… lots of good info that will guide me along the way.

  11. directorgtr says:

    Anyone else notice the floating worm, aka Alien being, attempting to learn how to do metal work at 21:08?

  12. Paul Compton says:

    Hi Adam,

    I've done a similar mod to a Triumph Daytona 500 8 stud head. On those there isn't a single hole above the end of the push rod tube, there are two holes, one for each push rod. I was converting to a through hole setup and the better sealing of the later tubes.

    It's easier to set up with a coaxial indicator.

  13. gerald estes says:

    indicating them castings is hard work man, nice going adam – bloody limey'production' parts ALL different no lie, but standardization such as youve accomplished ought to be good paying clean work, probably plenty of it too.

  14. sjacobson005 says:

    Great teaching video.  Thanks for the wonderful work. You da man!

  15. nickolaguez says:

    That flying joint scared me at first.

  16. john mine says:

    mid 1960s saw the start to switch to SAE hardware for B.S.A and Triumph it was common to find both

  17. Eric Corse says:

    Interesting setup and project.

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