Re: [MV] M151A2 Rejetting Advice Sought

From: Jeffrey Smith MVP (mvpco@yahoo.com)
Date: Mon May 13 2002 - 14:08:46 PDT


Gas is Gas. I've not heard of re-jetting carbs to
accommodate current
fuels.
The only thing you'll accomplish by opening up the
main jet is
increased top end
performance. If you have idling problems you MIGHT
try opening up the
idle jet
by no more than .003. I do that on M-38 carbs because
they have a
tendency to
idle a little lean. I would check out your valves.
Perhaps an intake
leak or
other vacuum problem.

Jim Wallace
Pensacola, FL
jwallace@pcola.gulf.net

--- "Winget, William A CONT JTFCS5G"
<winget@jfcom.mil> wrote:
> 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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