Re: [alfa] early vs. late accelerator-pump jets on Dellortos

["Dean" <tessiedog@xxxxxxxxxxxxx>]

Different cam spec's ie:10548 cams and emmisions. Use the larger jets .35
The 116 had .33 its a very small difference anyway. Make sure the holes are
clean because the block very easy due to small size. You will never get an
even spray of fuel down the port if they are blocked. They are also
adjustable under neath the carbies. Just look for even delivery for all 4
ports. Euneven delivery makes the engine stumble when you pump the throttle.
Also I have noticed two types of jets. One sprays directly down the port.
The other spray downward and is drawn in via the airflow. Get hold of how to
power tune webber and dellorto carbs its very helpfull.

Where you the fellow wanting these sud lights?
----- Original Message -----
From: "White Anthony" <anthony.white@domain.elided>
To: "Alfa Digest (E-mail)" <alfa-digest@domain.elided>
Sent: Tuesday, February 10, 2004 12:03 PM
Subject: [alfa] early vs. late accelerator-pump jets on Dellortos


> Anyone able to advise about the reasons for differences in
accelerator-pump
> jet design between early and late Dellortos?
>
> I have recently put the good Dellortos from my '73 105 on my '85 116 to
tide
> me over while I rebuild the carbs of the 116.  When I had the carbs off, I
> had a great time pressing the throttle linkage on the 105 carbs and
watching
> four jets of fuel squirt across my workshop.  In these carbs, the
> accelerator-pump jets squirt directly into the intake port, parallel to
the
> intake flow.  In the 116 carbs, however, the accelerator pump jet squirts
> directly down, perpendicular to the intake flow.  Why was the design
changed?
>
>
> Since putting the 105 carbs on the 116, I have noticed an increase in the
> smell of fuel in my oil.  This troubles me slightly, for the obvious
reasons.
> Are the two related?
>
> Regards,
> Anthony White
> Wellington, NZ
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