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Discussion Starter · #1 ·
Hi. This bike it my first Triumph and I am enjoying the site. I traded my VW bug for this bike. I have already learned quite a bit from this site, and now the fun starts. What did I get:confused: The guy I traded with claimed it was an original '66 Bonneville, which it is clearly not. I would like some advice on a direction for this project, as I will be restoring it myself. It is titled as a '66. engine is DU33074. The frame number is nonsensical to me (.123739) the rest of the parts except for the fenders are 1970? Can I build this as a '66? or if the frame is '70 would it be better to get it re-titled as a '70? how can I find out what year the frame is without a proper serial#? Thank you for any help.:)







 

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Up to 1966 the steering head lock was located in the left side of the steering head, about half way down. The lock was removable so you will find a keyhole shaped lug protruding from the frame. From 1967 the lock became a fixture in the top yoke, engaging in a hole in a plate welded to the top of the steering head. So if you have a lock in your top yoke (or a lock size hole in the top yoke) the frame is 1967 on.
I would treat it as a 1970 bike - that has acquired a set of earlier cases along the way.
 

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Discussion Starter · #3 ·
I appreciate the info. It does indeed have the lock built into the top yoke. Looks like I will be leaning towards a late 60's early 70's build. Did all of the 1970's have the removable front engine mount?
 
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