M151A2 Rejetting Advice Sought

From: Winget, William A CONT JTFCS5G (winget@jfcom.mil)
Date: Mon May 13 2002 - 06:12:20 PDT


Have a few Zenith Carburetors for MUTTS laying here, and we have a MUTT that
wont Idle properly (Tried adjusting the air/fuel mix, timing, etc. No
luck.)
Heard someone say rejetting (drilling out the bowl jet) would do the trick,
as the fuel mix has changed over the years or some such. (This would easily
turn into a New Vs Old Fuel mix density post possibly, but THAT WONT HELP as
I'm not going to homebrew fuel.....! )

Need to know if anyone has done a rejet (Drilled OR replaced) for the Zenith
Carb.
IF SO, What size drill, or What replacement size did you buy (Like say from
a Ford Pinto Carb or another source like a Holley?)

Bought the rebuild kit from TNJ this weekend at Aberdeen, and want to cover
all the correct upgrades before wasting a intake gasket.

ANY other suggestions on fixing a MUTT Idle problem (Short of crushing said
vehicle) are also welcome.

Regards and thanks for the assistance

The Web Page with some of the Collection:
http://home.mindspring.com/~jhooah/index.html

PS: Still seeking TOW Missile Parts to complete the TOW MUTT, Especially a
DAY SIGHT or night sight assembly.

Adrian Winget



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