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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 11-28-2012, 04:29 PM   #21 (permalink)
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"Art, 1970s had the same "X" caps as the '69s."

You are correct, but I was referring to the 1/2" hex plugs in the side of the rocker box through which you were supposed to stick a feeler gauge to check valve lash. It was just visible in one of the pictures of the engine.

Also, just on the edge of the picture of the engine is what looks like the larger crankcase vent that showed up on my '71. Don't know if the '70 presented with that as well but it's different than my '69.

Art.

Last edited by BirdoPrey; 11-28-2012 at 04:34 PM.
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Old 11-28-2012, 04:59 PM   #22 (permalink)
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"You are correct, but I was referring to the 1/2" hex plugs in the side of the rocker box through which you were supposed to stick a feeler gauge to check valve lash. It was just visible in one of the pictures of the engine."

My error, I corrected my reply
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Old 11-28-2012, 05:07 PM   #23 (permalink)
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You are correct about the forks, they were actually what the original poster asked about. We got so distracted trying to figure out other things that we have strayed from his original question.

Art.
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Old 11-28-2012, 06:42 PM   #24 (permalink)
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Number on paperwork matches number on frame and engine. T120R DU76543. Papers say 68.
Also I don't mind the side track from the original question since I'm still learning myself what I'm dealing with.
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Old 11-28-2012, 07:27 PM   #25 (permalink)
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Looks like your matching frame and engine numbers indicate a 1968 build as well as the paperwork/title...I guess the question is the engine size as 1968 builds did not have a 650cc engine. Perhaps you should ask the seller to tell you why he feels it's a 750cc. I asked previously where did you read that Triumph produced a 750cc engine in 1968...I have never read or heard that.

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Last edited by 68T120R; 11-28-2012 at 07:29 PM.
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Old 11-28-2012, 08:09 PM   #26 (permalink)
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You could bet London to a brick,that's a '70 frame.It may have been milled/ground back and re-stamped.It may still have the Triumph logo stampings on the raised pad,if it was a dealer replacement for a damaged frame.

The rocker boxes are '71-early '72.The head is probably the same vintage.The long headbolts from '70 and earlier won't work well with these rocker boxes.There is no internal column to clamp against the head.They need the later style '71-'74 (cycle thread to suit 650) bolts inside the rocker box.
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Old 11-29-2012, 01:42 PM   #27 (permalink)
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some pics of the neck and frame
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68 front end size-img_1048.jpg  
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Old 11-29-2012, 01:45 PM   #28 (permalink)
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other side, does this help on year or front end options?
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68 front end size-img_1037.jpg  
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Old 11-29-2012, 08:51 PM   #29 (permalink)
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someone else will have more visual familiarity with what a '68 or '70 frame should look like but, until then... is that all metal, or is there bondo in there? i thought there should have been two top tubes? something like this (just found this on google):


either way, maybe someone welded in new gussets since more of the headstock would have been visible after the chop. hard to tell from your whole-bike picture. so it doesn't necessarily mean they even changed the rake, let alone swapped in a new head tube. but maybe they did? what's visible of the the triple trees look normal (including the bent steering stops). can you see any casting marks in the yokes?
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Old 11-30-2012, 06:52 AM   #30 (permalink)
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It depends on whether you want to do a quick fix or a tear down but you could see if it's magnetic or pure bondo. Then carefully apply stripper to see if you can find a frame number. But it looks as if it's a standard Triumph frame with a bondo/metal addition?

I don't think that someone has added a new neck?

As the original question was about fitting forks, we're looking at late 60's to v early pre OIF forks? ( Trident forks may fit)
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