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I have a Weber 32/36 on the 235 in my '61 Apache. It is so much better than the Carter I had...more power and better fuel economy.

There is one thing I would like to improve: The second barrel begins to open rather abruptly at near-full-throttle, not leaving much 'gas pedal' margin between that and the overdrive kickdown at full throttle. Has anyone ever tinkered with the actuating linkage mechanism to make that second barrel open sooner, or more progressively? An obligatory internet search turned up nothing relevant.

Thanks!

-Kevin

In theory, the secondary link begins to rotate at 50% throttle. Does it show any sign of damage (bent)?
Are you sure your linkage to the carburetor is not the problem?

Panic, you are correct. Upon closer examination, the secondary does start to open at half-throttle. I'm just not 'feeling' the full effect of the second barrel until closer to full-throttle. The carb itself seems to be working correctly.

I can't complain; the truck runs great down the interstate...and that's with the boom in the bed, plus a parts engine. There's just a couple of hills between me and St. Louis, where it's a challenge to keep up with traffic...which of course is running faster than the speed limit anyway!

Thanks!

-Kevin

If you can do some fabrication, a bell crank can be installed between the pedal linkage and the primary link to the carbs, so that the clock position of the linkage is closer to 12 or 6 o'clock at 1/2 throttle. This will make the linkage movement more active with pedal motion.

Since the second barrel seems to be most effective near full-throttle, I wonder if timing might be a factor.

-Kevin

Shakey61,
I have now installed a weber 32/36 on my 61 235. I am at 5400 ft elevation, and running very rich (AFR=10) with the jets that came in the carb.
Sounds like you are at a lower elevation, but could you enlighten me on what jets you are running?

James, this thread is 4 years old. You may want to send Shakey an email.

James,

I run stock jets etc. on my 32/36. The operational altitudes I drive at in my area range from 466'MSL to 980'MSL. With those numbers, my AFR measures dead on.

The stock configuration for the 32/36 is:
Primary Main Jet: 140
Secondary Main Jet: 135
Primary Air Corrector: 165
Secondary Air Corrector: 160
Primary Idle Jet: 55
Secondary Idle Jet: 50
Primary Emulsion Tube: F50
Secondary Emulsion Tube: F6
Pump Jet: 50

I did a quick Google search, and it looks like jetting charts are available on several forums.

I also found this rule of thumb from Weber:
- REDUCE main jet sizes by one size (e.g. from 140 to 135) for every 1,000' above 3,000'
- REDUCE idle jet sizes by one size for every 2,000' above 3,000'
- INCREASE air corrector jet sizes by one size for every 1,000' above 3,000'

I hope this helps.

-Kevin