Carbs & Dynojet Kits

Charles Scappaticci scapco at ecentral.com
Fri Sep 20 07:09:35 PDT 2019


This goes way back and I am trying to remember some things about the
Dynojet installations.

My GPZ has gotten to where it's not running cleanly at low RPM's and is
getting harder to start.  It has a brand new battery so that is not the
issue.  In addition, my throttle has been slow to return for years, but has
now also gotten harder to turn.  I have had the handlebar assembly apart
and found nothing so I'm pretty sure the issue is with the carb linkage
sticking.  All of this has made me decide to do a thorough carb clean this
winter and to correct the throttle issues.  I will also replace the rubbers
between the airbox and carbs with new, softer ones as they are still
available.

My question for the group is this.  Back in the day when everyone was
installing these kits, I remember the consensus was to use the stock carb
springs, not the ones in the Dynojet kit.  I seem to remember the throttle
response was supposed to be better down low with the stock springs.  Can
someone refresh my memory on this? I am pretty sure mine has the Dynojet
springs as the kit was installed by Donnie at Performance Cycle back when
he still had a repair shop.  Unfortunately, the OEM springs are NLA, so I
will have to see if I can find a set somewhere if that is the case.

Regards,

Charles S.


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