Triumphrat

06-26-2006, 09:08 PM

Hi, This might be a dumb question, but can I fit a '77 140v into a different triumph frame .One that's a different year or model? One that isn't a wet frame? Will the mounts line up and is there room for the trans...
Sorry This will not be my last dumb question...
Thanks :???: :???:

KADUTZ · 06-26-2006, 10:57 PM

engine will fit ito any 63 thru 70 TR6 or T120 frame as "bolt in". You will have to convert to a right hand shift unless you can ride sidesaddle.
the engine can also be made to fit a T150 frame but why bother

GrandPaulZ · 06-27-2006, 07:55 AM

Your main issue is going to be fabricating Right side mounts and linkage for the rear brake setup. The Left side shift can be left alone.

Conversion to disc brakes might be in order. There are a dozen different ways to add disc brakes to an old Bonnie chassis.

DAGAD · 06-27-2006, 04:08 PM

easier option is convert it to R/H gear change!
you will also have to fabricate a new cylinder head steady.
Roy

GrandPaulZ · 06-27-2006, 04:17 PM

How is the shifter shaft mofidication done to allow it to pass from the tranny box through the backside of the primary as on the later bikes? Just drill and install a seal?

I would assume the new shifter shaft with the "pass around" steel hoop that wraps around the clutch is simply a slip-fit once you do that, and of course source a new Primary cover with appropriate hole & seal?

Hmmmmmm....

I wonder which way is least expensive / time consuming / problematic, shift conversion or brake conversion?

Regardless, it's all custom once you head down that path, so one must be prepared for the fun consequences!

GrandPaulZ · 06-27-2006, 04:19 PM

For what it's worth, I believe there are bolt-up kits that allow you to pop in a complete master cylinder/lever assembly with a modified Left side engine/footpeg bracket, and the caliper that also drops in place with the removal of one of the wheel spacers.

Relatively painless...

KADUTZ · 06-27-2006, 07:18 PM

converting to right hand shift would be easiest way to go
but I still vote for the sidesaddle

GrandPaulZ · 06-27-2006, 10:07 PM

The '74 Kawasaki H1 I'm working on right now has left-foot shift and right foot brake pedal, but retains the shifter shaft on the right side as well.

Vestiges of a screaming crazy flat tracker?

pendraig · 06-28-2006, 06:20 AM

Now, if you already have the left-hand shift and wanted to "retro" your engine for right hand shift, would it simply be a matter of fitting an old-style tranny cover, complete with shifter shaft and parts, and then sealing up the holes going out through the primary case?
As an ex-T150 rider I was aware that fitting a twin in that frame would be an easy matter, since it was basically a slightly modified T120 frame. It was always a wonder to me that they didn't pair-up the oil-in-frame concept with the triple so as to appeal to the go-fast man who wanted a more modern ride, and keep the twin in the old bolt-together-amidships frame that would appeal to the traditionalist Triumph rider.
I guess maybe this decision was reached at Umberslade?

GrandPaulZ · 06-28-2006, 09:06 AM

I don't see why that wouldn't work, although I've never tried it...