[Spridgets] Twin Carbs Tip

Paul Asgeirsson PAsgeirsson at worldnet.att.net
Mon Nov 19 20:18:39 MST 2007

Yes, and you do that with the twin carbs separated.  Then you hook them up
together, and properly with the feeler guage positioned between the heat
shield and the throttle stop, with the pick up arms held with very light
pressure downward.

Paul A

----- Original Message ----- 
From: "Jim Juhas" <james.f.juhas at snet.net>
To: "Bud Pazur" <bpazur at excel.net>
Cc: <spridgets at autox.team.net>
Sent: Monday, November 19, 2007 3:31 PM
Subject: Re: [Spridgets] Twin Carbs Tip

> Isn't this the point of doing the routine carb synchronization with a
> Uni-syn or a rubber hose?  Or is this something different?
> Bud Pazur wrote:
> >I dont know if anyone else has experienced this problem, but for a while
> >have been aware that, on my twin SU HS2 carbs, the rear suction disc and
> >needle does not rise near as much as the front disc/needle when I open
> >throttle. I traded chamber and disc locations, but doing that didnt
> >this condition. I played with jet flats, measured jet depths, measured
> >needles, played with damper oil levels  no clues. The throttle linkage
> >adjustment bolts were in line, but I decided to look at the throttle
> >anyway. I found that the rear plate was not opening near a much as the
> >plate. After adjusting the linkage, I got both plates opening the same.
> >adjustment bolts are no longer perfectly aligned, but the disc/needles
> >rise the same amount. Must be due to slop slop somewhere in the linkage.
> >had to then readjust the jet flats. The engine seems to be running much
> >better now. So, the bottom line is (for me at least), dont trust your
> >on the linkage to assume that both plates are opening equally.
> >
> >Bud Pazur
> >
> >'60 Bugeye - Street Car - 1275cc - 'Mr. White'
> >Race Spridget - 1275cc - 'SilverStreak'

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