1980 XR500 MotoThumper Build

sgthubbard#60
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sgthubbard#60
Edited Date/Time 6/26/2017 6:24pm
Don't usually post my resto's but I thought this one was off the beaten path enough to warrant showing off. She had the full on Mad Max treatment from the previous owner so I had a bit of work cut out for me. Still need to build some fresh wheels for it but want to bring it to Dilla in two weeks so that will have to wait. Got some neat stuff on there too. ProFab/White Brothers swingarm, Fox Factory remote resi shocks, Supertrapp exhaust, 78/79 CR250 tank, 81 CR450 front end with Race Tech emulators and some other little odds and ends I'm forgetting.

Here are some before and afters for you all.

Hubb
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sgthubbard#60
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sgthubbard#60 5/20/2014 9:03am
5/20/2014 9:03am
On a side note, I firmly believe valves belong in toilets not dirtbikes but I always thought the old 4 stroke national bikes were so cool and felt the need to build one. Was a really fun build since it was like trying to turn a dump truck into an indy car.
pete24
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pete24 5/20/2014 10:30am
5/20/2014 10:30am
u get that turd running rite?

The Shop

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sgthubbard#60
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Millers Falls, MA, USA
sgthubbard#60 5/20/2014 10:39am
5/20/2014 10:39am
pete24 wrote:
u get that turd running rite?
Yep, went back to the stock carb and it runs perfect. Still smoking a little bit but I'm hoping its just the leftovers burning off. If not it is getting a 520cc slug dumped in it.
MaxPower
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MaxPower 5/20/2014 2:11pm
5/20/2014 2:11pm
Looks really good
newmann
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newmann 5/20/2014 2:15pm
5/20/2014 2:15pm
Nice shocks! Where do you keep finding this stuff?Laughing
pete24
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pete24 5/20/2014 2:39pm
5/20/2014 2:39pm
newmann wrote:
Nice shocks! Where do you keep finding this stuff?Laughing
i saw all the crap in his garage he claims he" knows a guy"
sgthubbard#60
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sgthubbard#60 5/20/2014 3:42pm
5/20/2014 3:42pm
Lol, they were laying next to this....
sgthubbard#60
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sgthubbard#60 5/20/2014 3:43pm
5/20/2014 3:43pm
And I tripped over this pile getting over to the shocks.
YZ302
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YZ302 5/20/2014 4:25pm
5/20/2014 4:25pm
I thought you were gonna put a Mikuni on it? LOL
Nice job on the build.
sgthubbard#60
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sgthubbard#60 5/21/2014 6:55am
5/21/2014 6:55am
YZ302 wrote:
I thought you were gonna put a Mikuni on it? LOL
Nice job on the build.
Newmann sent me one so I threw that on with what I'm told is the proper jetting and it was nothing but a blubbering mess. Hoping there is just something wrong with that carb and the one you have will fix it up.

Thing is still smoking a bit so my plan to leave the engine stock and reliable went out the window when I just 2nd day aired a 520cc piston for it. No replacement for displacement right?! Lol
Crawman
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Crawman 6/26/2017 6:24pm
6/26/2017 6:24pm
I now have that bike. Made a trade for an old MR250. Love your creation, but I can't get it running. I have someone who is more inclined to get it going, but we are wondering if the carb set up is our problem ? If we have some questions, can you steer us in the right direction ?

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