How and why it works:
The different size jets used with this tool simulate the pressure at your jets or nozzles.
The "flow jet" is the same equivalent area as your total number of fuel jets or nozzles.
The on/off valve simulates pressures of the solenoid open or closed.
Available in 6 different basic versions.
Note: The only difference in the kits is the jet sizes.
While you can have any jet size you want the versions below carry some of the most used jet
sizes. You can start with any version and buy any extra jets sizes you need later
OR if you know what you need we will change out the jets to your requested sizes.
Single Jet Method:
For those that prefer the one jet size fits all method each kit comes with an .073 jet.
Holley Jet Sizing
Note: A Holley 73 jet inside diameter is .079
1 Cyl Kit: Part # 10141
( Primarily for popular single stage plates)
10 flow jets for a 1 nozzle system. 1 each of .048 .053 .061 .071 .073 .082 .091 .102 .110 .116
2 Cyl Kit: Part # 10142
(also works for dual carb plates with single solenoid)
10 flow jets cover a 2 nozzle system with 2 of .016 .018 .020 .022 .024 .026 .028 .030 .032
(Actual decimal sizes: .023 .025 .028 .031 .034 .037 .040 .042 .045 .073 )
2 Cyl Kit:- 2 Part # 101422
(for dual carb plates or a single double bar plate)
10 flow jets cover a 2 nozzle system with 2 of .032 .042         .052 .062 .072 .082 .092 .102
(Actual decimal sizes: .045 .059 .073  .074 .088 .102 .116 .130 .144)
4 Cyl Kit: Part # 10144
10 flow jets cover a 4 nozzle system with 4 of .022 .024 .026 .028 .030 .032 .034 .036        .038
(Actual decimal sizes: .044 .048 .052 .056 .060 .064 .068 .072 .073 .076 )
6 Cyl Kit: Part # 10146
9 flow jets cover a 6 nozzle system with 4 of .022 .024 .026 .028 .030 .032 .034 .036 .038
(Actual decimal sizes: .054 .059 .064 .069 .073 .078 .083 .088 .093)
8 Cyl Kit: Part # 10148
10 flow jets cover a 8 nozzle system with 8 of .024        .026 .028 .030 .032 .034 .036 .038 .040
(Actual decimal sizes: .068 .073 .074 .079 .085 .091 .096 .102 .107 .113)
Instructions & Test Jet Software included
Complete Kit (any version)......$254.95
extra jets..................$5.25 ea (any size available)
All Text and images on this website are copyrighted by David Koehler 2000 and beyond
All sales are final. Items and services provided by Koehler Injection are intended for off road use only.
No responsibility whatsoever will be accepted by Koehler Injection for any damage, injury or loss resulting from their use.
Nitrous Master.
Urbana IL, USA    217 531 1770     M-F  9 - 5 CST
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Nitrous system open flow test kit.
# 7010........$26.82
Holds 40 open flow test jets
Test Jet Holder
Open flow test kit jet holder.
machine shop engine industrial balancing, fuel injection  flow tesing urbana IL
Urbana IL, USA 
217 531 1770  
M-F  9 - 5 CST
Many Photos may be enlarged
by clicking on them.
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Nitrous Oxide
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Allows you to test, analyze and set your nitrous system for optimum performance.
Most Complete kit available. Works with plates or nozzle systems.
Digital guage reads in 1/10 psi increments up to 100 lbs.
Auto zero feature means "zero" is always zero, whether racing at the beach or on the mountain.
Auto off feature. Test jet size software included.
Use in conjection with our Bottle Scale and Nitrous Master software to do your own flow testing.
Nitrous Master open flow test kit.