>I have this same question in my head almost every time I work on my SUs. I
>have to go over the theory in my head of just how the SU works. Enrichment
>occurs by increasing the AREA of the fuel available to the air stream at the
>jet bridge. The only way to increase the area is to pull the tapered jet
>needle away from the jet head and/or pull the jet itself, away from the
>needle. Hence "unscrewing" the the jet adjusting nut increases the area and
>thus enriches the mixture.
>
>Jim Bauder
Thanks Jim, but which way is "unscrewing"
>Looking from above, unscrewed is clockwise. From below,
>counter-clockwise. From
>the side, put a wrench on and move
>it to the left. That's on my SUs.
>
>Steven Newell
AHA!, now we are getting somewhere...
>Well, CCW or CW depends on which way you are looking at the nut. Perhaps an
>easier way to remember is that it is 'normal' right-hand threads (ie it
>moves like any other nut), and you position the nut lower to enrichen the
>mixture (just like the 'choke' moves the jets). If you could get your head
>under the carbs and look up at the nut, it would be CCW.
>
>Randall
Groan....<G>
>On a TR3,, from the right side,,, to richen the mixture, the end of the
>wrench needs to go toward the rear of the car,, THUS the "r - r" rule,,,
>Rear (of car),, Richen (the mixture) Toward the front of the car is to
>Lean.
>
>Sharck
I like this, a "rule" R-R...
>Looking from the top down it is clockwise for richer.
>
>Don Spence
OK fellas, got it, Clockwise, to the Left and to the Rear
"enrichens" the mixture.
Thanks a bunch, and please forgive the snide remarks...<G>
--
Bill Pugh
1957 TR-3
aka Casper
TS16765L
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