1974 GT750 Rebuild

Here you can write about your restoration highs and lows and hopefully final success
burgs
Posts: 56
Joined: Mon Feb 06, 2012 9:07 pm
Location: Hunter Valley NSW Australia

Re: 1974 GT750 Rebuild

Post by burgs »

Hi
Finished the head studs, and the # 16 stripped bolt hole, bolt refitted and torqued up nicely, still waiting on the cylinder block to be bored :shock: !

Question are the head studs Loctited into the crankcase, they were very hard to get out but didn't notice any residue Loctite?

Burgs
burgs
Posts: 56
Joined: Mon Feb 06, 2012 9:07 pm
Location: Hunter Valley NSW Australia

Re: 1974 GT750 Rebuild

Post by burgs »

Hi
Finally got the cylinder block yesterday, today ceramic painted and baked them, looking good.
looked at a couple of YouTube clips of fitting the cylinder block and was horrified of what they were doing, anyone got a good way of doing this, I can't cannot remember how I did #1, part of old age I guess :?
I was thinking of spacers to hold the cylinder block square to the crankcase face, fitting one piston into the bore at a time, but that may involve a set of spacers as each piston enter and others fall, don't want the other rings to come out of it's cylinder, I guess it couldn't be much harder than a 360 degree twin, a little bit at a time on each piston.

Wheels, guards, brakes, electrics have been fitted just waiting on engine to be completed, and fitted.
Got to rebuild the carbies, have also got to fit the BS30 jets.

Mudguards are fitted, seat has been recovered, and ready for pick up.

Burgs
burgs
Posts: 56
Joined: Mon Feb 06, 2012 9:07 pm
Location: Hunter Valley NSW Australia

Re: 1974 GT750 Rebuild

Post by burgs »

Hi
No problem with fitting the cylinder block, middle cylinder on TDC, used overhead crane to hold the cylinder block steady.
#3 piston was tight on the side of the piston pin spacers, found piston had casting flashes left on the inside of the piston, a couple of rubs with a mill file and all good.
The Accent ignition system seems to be held up in transit in Frankfurt since the 10th of April, not a big issue as can run with standard system, just as long as I do receive it.
Seat has been finished and ready for pick up tomorrow.
Phone sopped working so have lost photos :x
Burgs
burgs
Posts: 56
Joined: Mon Feb 06, 2012 9:07 pm
Location: Hunter Valley NSW Australia

Re: 1974 GT750 Rebuild

Post by burgs »

Hi
Engine is now in the frame, decided to fit the exhaust system, but before doing so I thought I had better remove the baffles and clean them, got the retaining screws out and that is it, they seem to be stuck good and well.
Looking on the internet looks like caustic soda is the way to go, mate tried to clean his Honda tank once and it ended up making it look like a pregnant pig :D .
Other problem was when I went to fit the radiator, the little 90 degree elbow for the hose to the plastic tank broke off in my fingers, only thing holding it on was corrosion.
Bought a new replica radiator from Melbourne $125, it will do until I can source a good original.
The replica radiator looks the goods for a street fighter or classic racer and is stated as being more efficient, but lacks the original look.
I have never had no. 1 over heat at any time with the standard radiator.

Burgs
Post Reply