Marvel Carburetor Jets
Background: Standard Jets for Marvel "VB" Carburetors are specified
in the book that Pete so generously shared as follows:
High Speed Jet P/N 49-140-D-28
or 49-160-D-28
Intermediate HS Jet P/N 49-220-E-24
or 49-180-E-24
(the reason for the "or" is that Marvel made a change mid-run to get
better performance, I suppose)
Now: According to the Marvel book (P 13), jets should be changed for
high altitude operation. We already knew that and Geoff suggested a
real good way to do that with wire hanging into the opening of the
jet.
Marvel's suggestion for High Altitude operation is to use the
following jets:
High Speed Jet P/N 49-130-D-28
Intermediate HS Jet 49-170-E-24
Question: Does the second number in the part number indicate the jet
size? For instance, in a 49-130-D-28, is the jet size .013"? That
sure would stand to reason as far as I am concerned. If so, this
gives me some indication of (1) what I have and (2) what I need to do.
Thanks for enduring all of this and for your responses.
Tom
in the book that Pete so generously shared as follows:
High Speed Jet P/N 49-140-D-28
or 49-160-D-28
Intermediate HS Jet P/N 49-220-E-24
or 49-180-E-24
(the reason for the "or" is that Marvel made a change mid-run to get
better performance, I suppose)
Now: According to the Marvel book (P 13), jets should be changed for
high altitude operation. We already knew that and Geoff suggested a
real good way to do that with wire hanging into the opening of the
jet.
Marvel's suggestion for High Altitude operation is to use the
following jets:
High Speed Jet P/N 49-130-D-28
Intermediate HS Jet 49-170-E-24
Question: Does the second number in the part number indicate the jet
size? For instance, in a 49-130-D-28, is the jet size .013"? That
sure would stand to reason as far as I am concerned. If so, this
gives me some indication of (1) what I have and (2) what I need to do.
Thanks for enduring all of this and for your responses.
Tom
0
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