second stage jets etc

[peter GT muir]

need some help on the second stage on the carb, need it to run plus psi got a 135 main jet and .9 corrector on a grp a carb need some help on a second stage now:confused:

[peter GT muir]

need some help on the second stage on the carb, need it to run plus psi got a 135 main jet and .9 corrector on a grp a carb need some help on a second stage now:confused: 25 psi plus

[Markey Mark (BD)]

Are they the only mods to your carb so far?

For me i wouldn't be using a bored out venturi or a 1.35 main jet, i'd go back to standard on those.

As for the 2nd stage you'll be looking around 1.4mm size but you will need to monitor your AFR's to tell if you got it right. Also at that pressure your carb bowl will be emptying quickly so either 2mm needle valve will be needed or uping the fuel pressure just alittle to cope with the demand.

[djinuk]

yea get a standard carb rather than a group a in there..

Also bear in mind second stage is the non removable jet so ideally you want to just go up in small increments rather than to end up to big and have a over rich carb.

http://www.rtoc.org/boards/showthread.php?t=4761
http://www.rtoc.org/boards/showthread.php?t=460

couple of good articles there mate