AFR200 Series, Product User Guide
This document is subject to change without notice.
Caution: None of GAC products are flight certified controls including this item
Copyright © 2010, Governors America Corp., All Rights Reserved
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PUG4144 D
5.2.2 Air-Fuel Mixer / Control Valve Assembly
The following table is used to determine the appropriate air-fuel mixer selection (MX) as cross-referenced to the
ATB bore size for optimal engine performance.
MXSB & T1 ATB / Mixer Compatibility Matrix*
Mixer Type
T1 ATB Size
Mixer P/N
Throat Size
(inch)
Throat Size
(mm)
25mm
30mm
35mm
40mm
MXSB20
0.625
15.88
X
MXSB22
0.6875
17.46
X
MXSB24
0.75
19.05
X
X
MXSB26
0.8125
20.64
X
X
MXSB28
0.875
22.23
X
X
X
MXSB30
0.9375
23.81
X
X
T2 ATB / Mixer Compatibility Matrix*
Mixer Type
T2 ATB Size
Mixer P/N
Throat Size
(inch)
Throat Size
(mm)
45mm
55mm
65mm
MXMB40
1.25
31.75
X
MXMB42
1.3125
33.34
X
X
MXMB44
1.375
34.93
X
X
MXMB46
1.4375
36.51
X
X
MXMB48
1.5
38.10
X
X
MXMB50
1.5625
39.69
X
*Important Note:
The information provided is the recommended pairings of ATB’s and air-fuel mixers with the
most common combination emphasized in bold. The actual application may dictate a different pairing. In some
cases, there are more than one possible choice of mixer for a given throttle body. Contact your GAC
representative for confirmation on mixer sizing prior to ordering.
5.2.2.1 Mixer Nomenclature Clarification
The mixer part numbers are provided as MXSB## and MXMB## with the SB designating Small-Bore and the MB
designating Medium-Bore.
•
The MXSB series bolts directly to the T1 GAC ATB family (available up to 40mm)
•
The MXMB series bolts directly to the T2 GAC ATB family (available up to 65mm)
Important Note:
The ## is provided in 32nds of an inch at the venturi mixer throat. For example, the MXSB20 is
20/32 in. throat diameter.
