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Re: Help: Fitting Grooze jets on SU Carburetters

To: mgs@autox.team.net
Subject: Re: Help: Fitting Grooze jets on SU Carburetters
From: "A. B. Bonds" <ab@vuse.vanderbilt.edu>
Date: 22 Sep 1995 10:15:00 -0500
In <199509221402.KAA05368@biota.rsvs.ulaval.ca>, Jean-Guy Catford wrote:
>I bought these little devices to replace float in my MG's carb. They give 3
>spacers to adjust the fuel level in the float chamber. I have 2x SU HS-4
>and I would like to know how many of these spacers are needed for my carb.
>model.
>Thanks.
>
You need as many as are required to get the proper float height for
your carburetter with minimal bending of the float fork.  I realize
that this is not a real answer, but you _must_ set the float height to
the spec required by your particular car, which is found in your shop
manual.  I used two washers last time I installed these, but it may
be different in your situation.

A word about Grooze (sic) jets.  Yes, they do what they claim, but
overflow in the float chamber (especially after long layups) is caused
as often by sticking floats as sticking jets.  I make it a practice to
bang on the float chambers as my carbies are pumping up after having
parked long enough for the chambers to dry.

I often reflect on the brilliance of the British engineering that lead
to the pipes on the tops of the float chambers to divert the petrol
when -- not if-- the chambers overflowed.  I once asked a British
friend why they put the pipes on the outside of their houses.  He
looked at me as if I were a bit barmy and said, "Simple. 'At's so we can get
to 'em when they freeze."  QED
                A. B. Bonds




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