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Author Topic: And then there were two.. 1976 GT250 Rebuild  (Read 59876 times)

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #40 on: Mar 18, 2015, 10:09:11 »
I bought a few gallons of white vinegar and filled my fuel tank to the top w/ 100% vinegar for 18+ hrs.,then rinsed out the tank real good & after that I flushed it out w/ a gallon of denatured alcohol to dry it up and keep it from flash rusting while it's drying,you'll have a fresh tank inside after that.  ;)

Awesome, Ill give that a try man! Did you flush it out with water after the vinegar?
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline Tune-A-Fish©

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #41 on: Mar 18, 2015, 10:30:55 »
A little later, but cool add

"I didn't come here and I ain't leavin"  Willie Nelson

"love hard, live fast, die fun" Kacey Musgraves

"Like a Wreckin Ball!" Eric Church

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #42 on: Mar 18, 2015, 10:34:55 »
That is a neat ad! It is actually a bit earlier than mine. That has the ram air heads which they did away with for 76 and 77 and after 77 they went to the x7 250?? I believe. Mine is a 76 going on the frame of a 75. The air cooled triples (380 and 550) kept the ram air heads for the duration of their production.
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline grcamna5

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #43 on: Mar 18, 2015, 11:33:29 »
Awesome, Ill give that a try man! Did you flush it out with water after the vinegar?

Yes,the next step after draining all the dirty vinegar(which has all the rust,etc. from your tank in it)is to completely flush the tank w/ lukewarm water(I did mine in the bathtub over the Winter...no wife  :o :D ) a few times before you 'dry' it w/ the denatured alcohol.I also helped it to dry w/ the hose installed on the output of my electrolux vac.
I put the denatured alcohol in As Fast & Quickly as i could after I removed all the rinse water and then quickly swished that gallon around completely in there and drained all that out.
I then started up the vacuum in 'blower' mode and blew high volume air from the vac.(it does warm up too after the vacuum motor gets warm  ;) )into it mostly from the top,and also a little from the bottom tap hole. I liked the clean result !  ;)
Do your Best,no one can take that from you.

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #44 on: Mar 18, 2015, 19:29:08 »
Thanks for that writeup Gracmna5, I will be giving that a try soon!

The original frame is getting less and less parts on it =)



I am getting sold more and more on this aluminum foil and water polishing.
Back of chain guard
Before:


And after:
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #45 on: Mar 18, 2015, 22:04:15 »
And now there is a swing arm =) poof, just like magic!

Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #46 on: Mar 19, 2015, 20:39:34 »
Wiring harness on!
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline ridesolo

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #47 on: Mar 19, 2015, 21:12:42 »
That little beast sure has a narrow frame.  Are you finding any surprises so far or has everything been a straightforward swap out?
“Fight on and fly on to the last drop of blood and the last drop of fuel, to the last beat of the heart.”
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Please check out:  http://www.VetTix.org

These are on a low simmer out in the shop:
'75 Honda CL360: http://www.dotheton.com/forum/index.php?topic=56547.0
'70 Rupp Roadster: http://www.dotheton.com/forum/index.php?topic=67459.0

Offline HURCO550

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #48 on: Mar 19, 2015, 21:15:33 »
Yeah its a small bike really. Everything is swapping well so far. There is one mounting tab on the old frame that isn't on this one. Don't know what it's for yet, but I'm sure I'll find out haha
Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline grcamna5

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Re: And then there were two.. 1976 GT250 Rebuild
« Reply #49 on: Mar 20, 2015, 11:40:28 »
How did your airbox mounting work out ?
Do your Best,no one can take that from you.