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Author Topic: 1992 honda cb250 nighthawk scrambler build  (Read 311 times)

Offline pepzeppelin

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1992 honda cb250 nighthawk scrambler build
« on: September 17, 2017, 07:13:06 AM »
brother brought a 1992 cb250 nighthawk and wasn't running so hot. thought it would be a good project to rebuild and customize.


Couple weeks later pretty much stripped the bike and started cleaning bits and gibs, got new tyres, powder coated rims as well as experimenting with spray cans on the forks, triple tree, drum, etc


back together




a month in after having all the parts arrive
will update! always good fun

Offline alan f

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Re: 1992 honda cb250 nighthawk scrambler build
« Reply #1 on: September 20, 2017, 12:03:45 PM »
Looking good there.  We didn't get the cast wheels in the states,  same sizes in spoked wheels though but a 180mm drum up front.  What tires did you choose for the 16 rear 18 front?

With that small tank your seating position will be nicely forward with the foot pegs right where you want them,  that should balance the bike much better when the pavement ends.

Good luck.

Offline pepzeppelin

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Re: 1992 honda cb250 nighthawk scrambler build
« Reply #2 on: September 28, 2017, 07:13:28 PM »
Looking good there.  We didn't get the cast wheels in the states,  same sizes in spoked wheels though but a 180mm drum up front.  What tires did you choose for the 16 rear 18 front?

With that small tank your seating position will be nicely forward with the foot pegs right where you want them,  that should balance the bike much better when the pavement ends.

Good luck.

Thanks mate! The wheels are all states dirtman tyres both for the front 18 inch and rear 16 rims. Only tyres I could find for these rims

Offline pepzeppelin

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Re: 1992 honda cb250 nighthawk scrambler build
« Reply #3 on: September 28, 2017, 07:20:04 PM »
Back with an update, been progressing bit by bit, starting to take shape.

Recently rebuilt the carbys and got the sand blasted as well. Thinking of shimming the diaphragm needle but I'm not sure if it will benefit me or not work at all. Need someones opinion please!



Made and welded some brackets from a bit of scrap metal for the new headlight and indicators!



Considering keeping the old seat and re using it/modifying a bit because I'm lazy. But it's shape goes well with the style I'm going for.


Next I gotta weld a frame loop and figure out the electrical BS.
That's all for now!

Online Larry Fine

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Re: 1992 honda cb250 nighthawk scrambler build
« Reply #4 on: September 29, 2017, 07:37:59 AM »
Thinking of shimming the diaphragm needle but I'm not sure if it will benefit me or not work at all.

I once asked a bike mechanic about doing this on my 750. He pointed out that the main jets don't come into play until large-throttle/higher-RPM operation, so wouldn't benefit starting-from-a-stop use at all, which work with the pilot jets. Proper carb adjustment is what works best, and my 750 shows no symptoms of lean operation at any RPM or throttle opening.

 

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