My carb balancing tool is simple, practically free, and extremely
accurate.
If your intake manifold has the threaded holes for the exhaust
emissions air pump, you can do the following.
Take a piece of clear tubing, 6' or so, and fill it 1/3 to 1/2 with
water. Stick the ends of the tube into the holes for the air pump.
Make sure you have an air tight seal. Start the engine. The water
level will show you which side has more vacuum. This method is
extremely sensitive, and won't affect the airflow going into the
carbs. No matter how "free flowing" the various tools are that are
placed up against the throat of the carburetor, they all affect air
flow to a certain degree, and will therefore have some effect (even
if only minor) on the ultimate ballance of the carb. You can also
use this water manometer to check carb balance not only at idle, but
at higher rpms as well.
Best regards,
---
Chris Coker
Royal Oak, MI
1969 1600 Street Car (SPL311-24529)
www.risensonracing.com
Independent Amsoil Dealer
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