Most likely the root cause of your flat spot is a cold
intake manifold - even if the heat riser pipes are
clear, a header-type exhaust does not provide the flow
through them that a stock muffler does. Max'ing out
the accelerator pump volume and/or richening the
mixture will help to mask the problem (but fuel
economy will suffer). Another thing that will
exacerbate the condition is a centrifugal-advance-only
distributor like the 0 231 178 009...the stock SVDA or
DVDA works better.
Your tires are outlandishly large - increasing your
effective final drive ratio by nearly 25%. You're at
risk of overheating the engine anytime you drive it in
fourth gear, and should consider changing your pulley
ratio to overdrive the fan.
Kadrons would probably help a bit (at least if you
still had problems they'd be slightly different ones)
but they aren't going to be able to make a 1600 put
out enough power to pull those tires.


--- Eric Larson <[EMAIL PROTECTED]> wrote:

> What does the adjustment on the accel arm of a 34
> Pict -3 carb supposed to do? I assume it makes the
> accel pump squirt faster when you hit the throttle?
> (I have the non-alternator carb that I modified to
> work.) Problem is - hesitation. it hesitates after
> it's warmed up. The hesitation isn't there when you
> rev it in neutral. Can you adjust that out with the
> accel arm adjustments? Do I need bigger jets?
> 
> I'm also running 33" mud tires, which I'm sure
> doesn't help things. They really kill the power. No
> power off the start, and it hesitates when the choke
> turns off. Anything below 2000 rpm is slow. Descent
> power till about 3500 rpms, then slow again. Should
> I try different tires and see if the flat spot
> disappears? Or should I adjust the carb some more? I
> have a set of Kadrons. Would they help with the
> tire/power problem? Any ideas are appreciated. 
> 
> Eric


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