B-80

[SylvanLakeWH 32,209]

19 minutes ago, ebinmaine said:

Is the top of the throttle shaft reasonably tight in the bore?

Put that in English... do you mean to the governor? Or...?

 

i ain't a carbermanator expert like u...

Edited 18 hours ago by SylvanLakeWH

[ebinmaine 80,422]

4 minutes ago, SylvanLakeWH said:

carbermanator

 

At the top of the crabulator - where the twisty thingy gozintah. 

Make sure:

A. The turning motion is free with no "catches" or rough spots. 

 

B. That it doesn't wiggle around sideways too much. A little is OK.  

 

[ebinmaine 80,422]

Here's a similar carb for the explanation. 

 

 

 

 

 

 

 

 

[SylvanLakeWH 32,209]

Gotcha... actually it's pretty good...

I'm thinking it's most likely just dirty...

 

I'm noting improvements as I run it, so I'm thinking it's just a matter of time before I get to good...

 

everything on this has been pretty dirty so far... so I'm just keeping up with cleaning as I go and we'll see... 

[953 nut 68,654]

A quick check for the upper throttle shaft play is to put a drop of oil on the depression around the shaft (right where @ebinmaine is pointing) while the engine is running. If the surging goes away and then returns when the oil is gone then air in-leakage around the shaft is your problem. The little brass washers from the hardware store could do the trick.

Edited 4 hours ago by 953 nut

[ebinmaine 80,422]

14 minutes ago, 953 nut said:

brass washers from the hardware store could do the trick

 

Unfortunately most of the small block carbs I've seen don't have that provision.  

[Handy Don 17,355]

24 minutes ago, ebinmaine said:

 

Unfortunately most of the small block carbs I've seen don't have that provision.  

If I happened onto a #22 that was badly worn, I’d be temped to experiment with other ways to revive it--perhaps drill out and insert bushing(s) at the upper and lower pivots? This is not uncommon in older automotive carbs.

Edited 3 hours ago by Handy Don

[953 nut 68,654]

1 hour ago, ebinmaine said:

 

Unfortunately most of the small block carbs I've seen don't have that provision.  

I was just referring to the upper throttle shaft play.

1 hour ago, Handy Don said:

If I happened onto a #22 that was badly worn, I’d be temped to experiment with other ways to revive it--perhaps drill out and insert bushing(s) at the upper and lower pivots? This is not uncommon in older automotive carbs.

A flanged bushing could be filed to conform to the elongated lower pivot point, or as you have suggested drill top and bottom to ensure proper alignment and insert bushings top and bottom