another 77 GT 750

[T350guy]

in my garage ..Got this one for a good price but motor is stuck. cylinders look good no rust or seize marks
Missing the original middle header and the 2 inner mufflers BUT came with 2 spare outer Bassani pipes for the bike.
Everything else looks good. small dent in the tank near steering stop so I'll need to see why that happened.
Speedo in K's and frame number is 7999* my other 77 is in Miles at frame number 7846*
Have WD 40 down the cylinders soaking trying to free up the pistons.
The gear indicator switch is broken..It seems back in 85 the dealer had this off for some reason and the bike sat since.
Has the original tools yet . seat cover still in great shape as the pan.
The water pump plastic gear still looks good.
One thing I do need is the Mis spelled Q "Liquid Cooled" emblem..missing it on the left side
Also missing is the chain guard covers and foot rest..minor really.
I'll see if in a day or 2 I can get a photo.
These GT 750s can be addictive..lol
Guess I just like the 77's
Ian

[CBWELLS]

Congrats on your find. I have only one other comment......regarding the use of WD40 to free up the pistons. My friends in the corporate machine shop (& I regard them as high level experts in such matters) tell me that PB-Blaster is much better at penetrating & encouraging the parts to move. WD40 is a great product for many things, but after working with the machinists, I trust their advise. If you don't succeed with your first try, give the PB-Blaster a try before you get too dramatic with excessive force. Good luck to you &...... post some pix.

[Alan H]

I soaked the 550 crankcases in diesel for a week or two, occasionally turning the crankshaft (barrels and pistons off) for a few minutes in the hope that the seals would soften. It seemed to work, and after I over oiled all the main/big end/small end bearings several times the bike was started up a couple of weeks ago. Now bearing in mind it probably hadn't run for the thick end of 40 years and what I had given it for a meal, it took some easy start to get it firing on hotter plugs than normal, but now seems to start OK on the normal plugs and just needs a run to clear the remainder of the crap out.
I'll report on how it goes, but it might be a suggestion on how to go with an engine that's been stood for ages rather than replace seals and bearings that may only need persuading that they need to get their selves in gear for the 21st century.

[Weirdbeard1000]

+1 on the PB Blaster. Been using it for years. Best stuff out there, add a little heat and things really get movin.

[T350guy]

Tonight I have soaked with liquid wrench BUT I'll have a look for PB Blaster.
My MPH 77 was made on the 12 of 76 , this one was manufactured on the 7th of 77

[oldjapanesebikes]

My MPH 77 was made on the 12 of 76 , this one was manufactured on the 7th of 77

That is a really late build date - how close is it to 80508 which so far at least seems to be the last one made ? My '77 with the KPH clock is 80104, but I don't have the headstock label and so don't have the build date..

[T350guy]

Ian..My 77 frame number is 79992

[oldjapanesebikes]

Ian..My 77 frame number is 79992

Good to know - so my build date would have been quite close to yours - either the same month or perhaps August. Thx !