replacing carb. butterfly valve

[Guest]

rebuilding my carbs., float post on #4 broken,got spare set from someone and the number four carb. butterfly was rusted shut. Soaked it in evaporust and got it to work, but butterfly plate is bent and of course two small screws are so rusted can't get them out to replace. Is there a way to replace entire butterfly,valve and shaft the it is attached to? thinking I could drill out screws and get plate off. and remove shaft and replace with good one I have. But not sure shaft will come out even if I can get butterfly plate off. terrylee

[Nessism]

Yes, you can replace the shaft and butterfly. Take out the screws for the butterfly, remove the butterfly, and then pull out the shaft. You might have to take off the sync adjuster mechanism - it comes off after a small roll pin is pressed out. I've done it before and the hardest part is getting the screws out.

Good luck.

[Steve]

Actually, getting the screws back in is no picnic, either. They are peened at the factory to keep them from coming out. Removing them is difficult because the tips are bigger than the holes you are asking them to go through, but trying to put them back is hard for the same reason.

Other than that, it should work just fine.

It would be just dandy if you could find a way to peen the screws back into place. Maybe support the throttle rod on something that is sticking up the outlet throat while you reach through from the intake side with a punch and dimple the end of the screw?

.

[Nessism]

I used red loctite when doing a shaft replacement.

[Steve]

I used red loctite when doing a shaft replacement.

It's not affected by the occasional gas that goes by?

.

[terrylee]

Thanks guys I thought that is what I could do. Didn't know about the screws, thanks. I will have to drill the rusted ones out and will replace with valve and shaft from another carb. terrylee