Volume control screw.. ed me!
Posted: Sat Aug 17, 2013 10:50 pm
So I dedicated a few weekend hours to rebuilding my Zenith 32NDIX today. When I got my Hafi, the carb was loading up badly when the throttle was pressed. You could see fuel pour into the right side throat, and none in the left side.
So..
Disassembled, soaked all metal parts in a parts cleaner bath (20 mins per dip) and brushed and reassembled.
Used the Hafi NDIX rebuild kit sold by SAV, for what it's worth.
Things came apart OK, and went back as before. Bowls were a mess.
It's all clean now.
Before;
After;
So here is my problem;
The carb had a mystery left volume control screw installed. Upon review, it looks like a Solex screw.
I have 2 new and correct volume control screws now.. and they were the last pieces installed.
Right side went in just fine, but the left side was apparently damaged by the incorrect threads on the bodge-job Solex screw. The new unit will NOT screw in.
Do you folks think a tap with the correct thread size (if you know this, please tell me) will do it, or do i need to Helicoil the thing to do it properly?
So..
Disassembled, soaked all metal parts in a parts cleaner bath (20 mins per dip) and brushed and reassembled.
Used the Hafi NDIX rebuild kit sold by SAV, for what it's worth.
Things came apart OK, and went back as before. Bowls were a mess.
It's all clean now.
Before;
After;
So here is my problem;
The carb had a mystery left volume control screw installed. Upon review, it looks like a Solex screw.
I have 2 new and correct volume control screws now.. and they were the last pieces installed.
Right side went in just fine, but the left side was apparently damaged by the incorrect threads on the bodge-job Solex screw. The new unit will NOT screw in.
Do you folks think a tap with the correct thread size (if you know this, please tell me) will do it, or do i need to Helicoil the thing to do it properly?