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SU jetting and tuning 140-160

uid 4846's pic
posted by  JohnMc on  Mon Jan 6 08:43 CST 2003
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last visit: Thu Oct 23 07:42 CST 2014
[RELATED]

Usually all the jets are the same - its the needles which are specially tuned to adapt the carb to the engine.

Rhys Kent (posts more at the SwedishClassics website) know lots about them - he suggested a new set of needles for my 544 (I was using the B18 carbs on a 2.2 liter B20) and was able to supply a used set for me for a very modest fee. The mid and upper RPM power increased nicely - prior to that the power would feel a bit strangled.

http://members.shaw.ca/islandautomotion/home.html

Of course, having gotten it nicely sorted on the SU's, now I've jumped into some deeper water with a pair of DCOE's. I'm thinking off getting together some parts and assembling a wide band O2 sensor to aid in their tuning.






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