70 Triumph "special" build Photos - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 8 (permalink) Old 02-14-2015, 07:16 AM Thread Starter
SuperSport
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70 Triumph "special" build Photos

I just finished my T120 build after about 4 months. I did all the modifications in my shop with the exception of actual engine machine work. The bike was built from a piles of parts bought online and at swap meets
The basics are 70 T120 frame,90's Yamaha FZ600 R forks and yokes, 71 T120 engine with a 70's 750 Routt cylinder, MAP forged 9.5 pistons, and steel connecting rods, slightly hotter intake cam and a bunch of other stuff...

What is was at the beginning when I bought it... A derelict lump buried in a pile of Chevy V8 engines.



A few details during the build...







More or less finished ,just missing the electric tach and I'm fabricating a chain guard.





And a short video to prove it runs....The engine was fully warmed up and I'm jerking the throttle just for fun....

https://www.flickr.com/photos/[email protected]/16477829286/

Second fastest Triumph..............land speed racing....dressed in animal skins clinging to oily vibrating machines propelled by fire..
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post #2 of 8 (permalink) Old 02-14-2015, 07:36 AM
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Well done. You should be darn proud of the transformation. Sounds angry.
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post #3 of 8 (permalink) Old 02-14-2015, 10:41 AM
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Nice!

Gotta love the removable front engine mounts for ease of engine installation... "70 ONLY!"

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post #4 of 8 (permalink) Old 02-14-2015, 11:24 AM
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Nice revival! Hard to believe somebody thru that engine/chassis in a pile. Proves they are still out there for the finding.

Bike should be a blast to ride. Judging by the tires, I suspect it might see a dirt road or two.

Not often you see a bike with an oil filter that is almost the same size as the oil tank.

Congrats on nice job!

regards,
Rob
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post #5 of 8 (permalink) Old 02-14-2015, 04:00 PM Thread Starter
SuperSport
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Quote:
Originally Posted by GrandPaulZ View Post
Nice!

Gotta love the removable front engine mounts for ease of engine installation... "70 ONLY!"
Yes it does make it easier....I use my portable shop crane to hoist the engine and steady it while I massage it into place.

Quote:
Originally Posted by Snakeoil View Post
Nice revival! Hard to believe somebody thru that engine/chassis in a pile. Proves they are still out there for the finding.

Bike should be a blast to ride. Judging by the tires, I suspect it might see a dirt road or two.

Not often you see a bike with an oil filter that is almost the same size as the oil tank.

Congrats on nice job!

regards,
Rob
Yeah a few dirt roads...not trail riding.
The big filter...The alloy oil tanks holds about 2-1/4 quarts of oil...So I used a large filter to give another 1/2 quart. It's a automotive remote filter housing that accepts many common filters, Ford, Japanese and Jeep...I have Jeeps so I have filters. That white filter is just for break in... Then black Wix filters...that will blend in a bit better...

Second fastest Triumph..............land speed racing....dressed in animal skins clinging to oily vibrating machines propelled by fire..
Truckedup is online now  
post #6 of 8 (permalink) Old 02-15-2015, 03:30 PM
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Looks a great fun bike to ride, a lot of interesting and ingenious mods such as footrests, brake pedal etc. Is that a T160 kickstart or something Japanese? Also, I'd be very interested in any details on how much work is needed fitting that front end - I seem to have a couple of spare frames and the makings of another couple of engines but I'm short on wheels & forks. That FZ setup looks good to me.
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post #7 of 8 (permalink) Old 02-16-2015, 07:11 AM Thread Starter
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John,the kick start is from a 70's Yamaha XS650. You can buy 5 Yammie kickers for the price of one T160... It's not a bolt on and needs the bore honed out a bit to fit a Triumph. You can see it's welded to the shaft....I've done a few Yamaha kickers this way.. Yes. the kicker won't come off without grinding the weld but with a good bush and seal it'll outlast me.


I chose the FZ600R front forks because they are 38MM tubes, the yoke offset is nearly identical to Triumph. The yoke steering stem needed to be shortened about an inch or so to avoid spacers. You can see the aluminum spacers I made in this first mock up of the forks...



I didn't like the look of it so I shortened the hollow stem.Not easy to do because the stem resisted my attempts to remove it. So I sectioned the stem, made a steel slug to fit inside and welded it together. I also turned down the stem about .015 inch to better accommodate available tapered roller bearings. And made thin spacers so the roller outer races fit properly in the Triumph steering neck. A bit more work than I planned, there might be other front ends that are easier to install.... The Yamaha FZ600 forks appear to have perfect springing for the Triumph, such smooth action...

Second fastest Triumph..............land speed racing....dressed in animal skins clinging to oily vibrating machines propelled by fire..
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post #8 of 8 (permalink) Old 02-16-2015, 01:38 PM
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Thanks for the info. Those forks look right (and usually what looks right isn't far off being right!).

To fit the Triumph wheel, did you have to make a new spindle? Or modify the existing one? Or was most of the adaptation to the forks?
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