Gary
With all due respect, Why is this a question for the Tech list and not
being taken up directly with PCW. I think PCW told me there are approx
20 Tourmasters that have been built. Are you not getting a satisfactory
response from PCW ? I am not suggesting that this is not the right forum
for your question but I would think that you would go thru PCW first and
then pose the question to this list. So assuming you did that, Then that
means they couldn't answer your question which scares me...
Just curious Phil
Gary Rathbun wrote:
>
> Calling all carburetor gurus! I'm having problems getting my TourMaster
> running right:
>
> It has titanium needles with C-clips (don't know the
> brand/model--whatever PCW uses), and .157 main jets.
>
> If I put the C-clip in the second slot, it runs fine in the low range,
> but very lean at cruising speed and deceleration.
>
> If I move the C-clip to the third slot, it's much happier at cruise and
> decel, but chokes and stumbles when easing away from a stop. I tried
> turning the idle adjustment screws in, but even at only 3/4 turn out
> from fully closed, it still stumbles. It's evident that the needle
> position has some effect on the low range.
>
> If I put it in the second slot and add a shim washer, I get a compromise
> of the two above: stumbles a little off idle, and pops a little at
> cruise.
>
> The carbs are properly synched, and the idle circuits have been blown
> out. It idles fine.
>
> Questions:
> - I have a set of .160 main jets; if I install them, might it help to
> richen up the midrange, as well as the full-open? It accelerates fine
> at wide-open throttle, no popping or hint of problems, pulls good up to
> redline.
>
> - I'm buying a set of needles and jets from Tyler Pennock, in hopes of
> finding needles with a steeper taper, since it seems like a steeper
> taper would solve both problems: i.e., let me adjust the needles for a
> smooth start at low range, yet richen up the midrange. Any thoughts on
> this?
>
> - How about tweaking some of the other jets/adjustments in the
> carburetor? I'm not very mechanical, but have a service manual and am
> willing to tackle a moderately difficult job.
>
> Any help much appreciated!
>
> Gary Rathbun
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