Frank's Triumph 750 engine overhaul & resto-mod
- Thread starter grandpaul
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Re: Triumph 750 engine overhaul start to finish
To install the cush rubbers, I clamp a clutch hub in the vice, slip the centre housing over the splined shaft, insert the large rubbers, apply some torque with my clutch holder tool, and insert the small rubbers. Piece of cake.
All the new parts mentioned previously have arrived, except the transmission main bearing.
To install the cush rubbers, I clamp a clutch hub in the vice, slip the centre housing over the splined shaft, insert the large rubbers, apply some torque with my clutch holder tool, and insert the small rubbers. Piece of cake.
All the new parts mentioned previously have arrived, except the transmission main bearing.
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Triumph 750 engine overhaul start to finish
Great thread.
Posting with Tapatalk while riding my Tiger 955i at 15 over the speed limit.
Great thread.
Posting with Tapatalk while riding my Tiger 955i at 15 over the speed limit.
Re: Triumph 750 engine overhaul start to finish
. It amazes me how easilly you guys in the USA get parts!!!
GP. I don't want to be giving "The Master" advice BUT, it may be a good idea to remove those scrapings at the bottom of the hex' in the sludge tube retainer.
That thing changes direction "quite often" and the inertia may cause them to fatigue and detach themselves.
. It amazes me how easilly you guys in the USA get parts!!!
GP. I don't want to be giving "The Master" advice BUT, it may be a good idea to remove those scrapings at the bottom of the hex' in the sludge tube retainer.
That thing changes direction "quite often" and the inertia may cause them to fatigue and detach themselves.
Re: Triumph 750 engine overhaul start to finish
As soon as I saw the finished, resized and cropped photo, which clearly showed the pressed lips and their shadows, I knew I was going to do that!
As soon as I saw the finished, resized and cropped photo, which clearly showed the pressed lips and their shadows, I knew I was going to do that!
Re: Triumph 750 engine overhaul start to finish
Good progress, GP.
Good progress, GP.
Re: Triumph 750 engine overhaul start to finish
Head is clean, came out real nice. It's going to need all 4 valves & guides (I figured that before I ever opened it up)
Cases are spiffy clean and ready for all new bushings; crank assembly & installation will start immediately afterward.
We're on the uphill...
Head is clean, came out real nice. It's going to need all 4 valves & guides (I figured that before I ever opened it up)
Cases are spiffy clean and ready for all new bushings; crank assembly & installation will start immediately afterward.
We're on the uphill...
Re: Triumph 750 engine overhaul start to finish
Looking mighty good. Very nice.
Looking mighty good. Very nice.
Re: Triumph 750 engine overhaul start to finish
The next three days are going to be "fast and furious" due to the fact that we were out of town last week from Thursday to Saturday, and I'll be heading to The Texas Mile this coming Thursday morning.
So, I popped the cases into the oven at 250 for 15 minutes while the bearings sat in a ziploc in the ice tray of the freezer. They popped right in with a minimum of friendly persuasion. (Oven photo only shows the Triumph tranny inner cover with a Norton gearbox, the main cases came a few minutes later).
The next three days are going to be "fast and furious" due to the fact that we were out of town last week from Thursday to Saturday, and I'll be heading to The Texas Mile this coming Thursday morning.
So, I popped the cases into the oven at 250 for 15 minutes while the bearings sat in a ziploc in the ice tray of the freezer. They popped right in with a minimum of friendly persuasion. (Oven photo only shows the Triumph tranny inner cover with a Norton gearbox, the main cases came a few minutes later).
Re: Triumph 750 engine overhaul start to finish
Polished out the connecting rods and installed them with new bearing shells and a dab of 10/30 oil on the crank journals. (before & after)
Torqued the rod nuts to spec. A 5-second video is almost 5 MEGABYTES!!!! (so, no video) Anyway, you drop the small ends and they just "float" down till they stop against the shop towel bumpers I had between the crank cheeks to cover the vice jaws. Nice.
Polished out the connecting rods and installed them with new bearing shells and a dab of 10/30 oil on the crank journals. (before & after)
Torqued the rod nuts to spec. A 5-second video is almost 5 MEGABYTES!!!! (so, no video) Anyway, you drop the small ends and they just "float" down till they stop against the shop towel bumpers I had between the crank cheeks to cover the vice jaws. Nice.
Re: Triumph 750 engine overhaul start to finish
Nice progress and great work. You are rolling!
Nice progress and great work. You are rolling!
Re: Triumph 750 engine overhaul start to finish
Next small step is all I can do until the fresh cad plated hardware arrives...
I took the output shaft/gear and new bearings to my friend's house to press the new bearings in. First, selected the closest fit deep socket to shove the old needle bearings out. Then, pressed the new ones in. I really need to get a small press of my own; "in the new house..."
Back in the shop, I installed the tranny mainshaft bearing & retainer snap ring, then the seal. Cleaned up and installed the shifting camplate before slipping the output shaft/gear in.
Trying to install the output shaft/gear without the seal to help align the critically tight rollers is a nightmare; I wasted a half hour before I remembered this. Just need the cad plated nut, and this step is done.
Next small step is all I can do until the fresh cad plated hardware arrives...
I took the output shaft/gear and new bearings to my friend's house to press the new bearings in. First, selected the closest fit deep socket to shove the old needle bearings out. Then, pressed the new ones in. I really need to get a small press of my own; "in the new house..."
Back in the shop, I installed the tranny mainshaft bearing & retainer snap ring, then the seal. Cleaned up and installed the shifting camplate before slipping the output shaft/gear in.
Trying to install the output shaft/gear without the seal to help align the critically tight rollers is a nightmare; I wasted a half hour before I remembered this. Just need the cad plated nut, and this step is done.
Re: Triumph 750 engine overhaul start to finish
Good progress and great documentation.
Good progress and great documentation.
FrankDaTank
Member
Re: Triumph 750 engine overhaul start to finish
Great Progress Paul...
Was even better to see in person yesterday morning. Thank again and have fun at the Texas Mile.
Great Progress Paul...
Was even better to see in person yesterday morning. Thank again and have fun at the Texas Mile.
Re: Triumph 750 engine overhaul start to finish
A few updates, but still waiting on the cad plated hardware to begin serious assembly.
The tranny mainshaft key was stripped, and the clutch hub had been spinning uselessly; this caused a bit of scarring which I ground down carefully so as not to go too deep or unevenly.
Good thing I didn't waste cad plating on the rear sprocket...
A few updates, but still waiting on the cad plated hardware to begin serious assembly.
The tranny mainshaft key was stripped, and the clutch hub had been spinning uselessly; this caused a bit of scarring which I ground down carefully so as not to go too deep or unevenly.
Good thing I didn't waste cad plating on the rear sprocket...
Re: Triumph 750 engine overhaul start to finish
At last, the top end parts arrived! Just dropped off the valves, guides, pistons & rings at the machine shop; they'll be ready tomorrow.
Also got in the chain adjusters and rear brake pedal return spring.
At last, the top end parts arrived! Just dropped off the valves, guides, pistons & rings at the machine shop; they'll be ready tomorrow.
Also got in the chain adjusters and rear brake pedal return spring.
Re: Triumph 750 engine overhaul start to finish
I think that sprocket has seen better days!
That top end is almost ready to go. Good progress.
I think that sprocket has seen better days!
That top end is almost ready to go. Good progress.
