I have a feeling some of my issues in my current carb setup have to do with the butterfly shafts being worn or bent. What do i look for and how can i determine if they are serviceable?
(I want to make sure I can rebuild)
Rebuilding carbs question
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audiocontr
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McCall Pinz
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- Location: McCall, Idaho
Seach for some of the older posts on carb rebuild and worn shafts. There are replacements shafts available and end seals if your bases are the right versions. I knew mine were worn out by spraying some starting fluid on the exterior of the shafts and the engine would rev because it was sucking the fluid in.
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lindenengineering
- Posts: 715
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- Location: Golden Colorado USA
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Apart from wha McCall Pinz has contributed, simply disconnect the throttle links at the operating arms, grasp each shaft with thumb and forefinger and try to lift the shaft up 'n down.
Obviously there should be no appreciable lift!
There are basically three base builts out there.
The original was a brass sacrificial shaft in a non O ring style base.
The second version was a steel shaft with an o ring land to seal the shaft extremity.
The third was the same as above but with an oversize shaft. This was achieved by line boring out the base to accept an O/S shaft. This latter version is a rare bird--but out there!
If you have a base with a brass shaft you can often recover the whole plot by simply by inserting a new std style steel shaft into the base. In most cases the bores do not wear the shaft being brass does!
We machine the base edge to accept an O ring seal to emulate build #2 as described.
In some cases we have been forced to line bore bases to accept the O/S shafting. The problem is that any machine shop can do this but they MUST have a mandrel that will do a one pass cut--NOT a half pass from each side--They invariably don't line up and it in effect wrecks the valuable AND RARE base.
And that's the way it is!
Dennis
Obviously there should be no appreciable lift!
There are basically three base builts out there.
The original was a brass sacrificial shaft in a non O ring style base.
The second version was a steel shaft with an o ring land to seal the shaft extremity.
The third was the same as above but with an oversize shaft. This was achieved by line boring out the base to accept an O/S shaft. This latter version is a rare bird--but out there!
If you have a base with a brass shaft you can often recover the whole plot by simply by inserting a new std style steel shaft into the base. In most cases the bores do not wear the shaft being brass does!
We machine the base edge to accept an O ring seal to emulate build #2 as described.
In some cases we have been forced to line bore bases to accept the O/S shafting. The problem is that any machine shop can do this but they MUST have a mandrel that will do a one pass cut--NOT a half pass from each side--They invariably don't line up and it in effect wrecks the valuable AND RARE base.
And that's the way it is!
Dennis
OOOps no customer bashing now
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pinzinator
- Posts: 937
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- Location: Indio, California