Question about 1973 Triumph T 100 R

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Willa e 3134 cam fit this engine

I have cams from a T140 71-7016 and 71- 7182, Will they fit a 1975 T120 engine that i am building ? Thank you

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Maybe.. You need a parts manual. I personally wouldn't swap parts from a 650 to a 750 or vise-versa. The Triumph factory at the time was going through to major changes and all kinds of stuff came out. I would say if the shafts are the same width and length.. all you are looking at is duration. The clearance settings should be the same. Many times there are compromises from idle to full throttle. That is the magic of what the Factory was doing for "the everyday rider".. luckily, the Triumph has a long history of experimentation.. I would go for it..

Read here .
http://www.postdiluvian.org/~mason/moto/cam-timing.html

Here is a forum I use for info from time to time.. Looks like what you want to do can be done. Why are you doing this.. cost? or because you want this modification. My heart goes out to ya if you are doing this because you have 140 cams and no 120 cams. They are easy to come by. looks like you will have to fiddle with the timing a bit.
http://www.triumphrat.net/classic-vintage-and-veteran/127801-650-cam-in-750-a.html

Jim

Posted on May 10, 2010

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