RE: non-adjustable ZS carb needles

[R John Lye <rjl6n@uva.pcmail.virginia.edu>]

On Dec 8,  9:00am, Tom Gentry wrote:

> Jeff may have come across something that I was unaware of.  If the ZS tool 
> doesn't work and you have fixed jets, how was the carb adjusted at the 
> factory?  With manufacturing tolerances for both engine and carb there HAS 
> to be some method of adjustment.  What is it?

I've apparently got the same sort of non-adjustable ZS carbs on
my '70 GT-6.  As far as I can tell there's no adjustment of the
needle at all.  You can adjust idle speed etc., but the mixture 
is fixed.  When the needle gets too worn, you're SOL.


John Lye

rjl6n@uva.pcmail.Virginia.EDU