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Thread: 450 carb rebuild wont run Reply to Thread
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  Topic Review (Newest First)
03-20-2019 02:15 PM
Moccasin Ranger
Quote:
Originally Posted by Wilbur View Post
You're gonna need a big gun for that.

Torch.


It's fun soldering brass floats with gas in them. Like a jet afterburner.
03-20-2019 12:20 PM
Wilbur
Quote:
Originally Posted by Moccasin Ranger View Post
If the tube is brass, and you can reach it, solder works.

You're gonna need a big gun for that.
03-19-2019 06:40 PM
Moccasin Ranger Should be on the lookout for gas getting into the oil. If the bowl is over-filling, and now the overflow is disabled, gas could run into the cylinder. I'd be religious about turning the petcock off any time the engine isn't running..
03-19-2019 05:09 PM
cygnus the float wasnt cracked or leaking
first i lengthened the tube 2mm and had some leaking out the carb bottom
Then put it to 4mm and it doesnt leak and runs very well.
I know i shouldnt have to mod it but it seems like something is worn or distorted
i might try and track down a new float
03-18-2019 10:06 PM
Vortec325
Quote:
Originally Posted by cygnus View Post
Ok so broke down the carb and found that the needle valve was sealing well. Took a small piece of tube about 1centemeter long. Pressed it down over the overflow tube extending it's lenght.second time I adjusted it to 4mm and now I have no leak and she idles and runs like a new bike.i don't know if the seat was worn a bit or if the float was distorted. But this has solved my problems. Thanks for the help


Did you ever check to see if the float has a hole in it ? You shouldn’t have to use something to extend the overflow tube . I bet you are getting crap from the tank stuck in the seat and by taking it apart those couple times you have flushed most of it out by now . I’d be leary of extending the overflow because if the float sticks again you run a higher chance of gas flooding the carb and running into the base
03-18-2019 07:06 PM
Moccasin Ranger
Quote:
Originally Posted by Wilbur View Post
If so, JB weld is the only thing I found that will stick to a carb, at least a Holley. Not sure if the location allows to do that but if so, it's a cheap fix.

If the tube is brass, and you can reach it, solder works.
03-18-2019 05:31 PM
cygnus Ok so broke down the carb and found that the needle valve was sealing well. Took a small piece of tube about 1centemeter long. Pressed it down over the overflow tube extending it's lenght.second time I adjusted it to 4mm and now I have no leak and she idles and runs like a new bike.i don't know if the seat was worn a bit or if the float was distorted. But this has solved my problems. Thanks for the help
03-18-2019 05:22 PM
Wilbur
Quote:
Originally Posted by Moccasin Ranger View Post
Overflow tube might be cracked.

If so, JB weld is the only thing I found that will stick to a carb, at least a Holley. Not sure if the location allows to do that but if so, it's a cheap fix.
03-18-2019 04:59 PM
Moccasin Ranger Overflow tube might be cracked.
03-18-2019 01:31 PM
cygnus Ok so she's running great and I got to idle nice.took it out for a short run and now it's leaking from the overflow again.just like before the carb rebuild. I thought the seat might be worn out.I polished the seat well when I had it appart and checked that the valve was sealing . Floats not cracked. Anyone had any luck extending their overflow slightly to help push the float up a bit?
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