Hi Chris I tried to get a thread going like this a while ago All those numbers sound 'ball park". The difficulty in comparing jettings is compounded by different engine setups. My L20 has big valves 76 cam and fairly open exhaust system My settings were Venturi 36 Main Jet 150 Air correction jet 150 Emulsion Tube F2 Idle Jet 45 F9 Pump Jet 40 Plugs BP6EY Std B/B electronic dissy - no vac advance 15 BTDC This set up is very similar to yours but recently because of discussions with terry and the list and some help from a guy called MOTACARB here in nerang, I now run slightly smaller mains #145 and much larger airs #190 with really good results. I'm also considering going up again with the air jets just to try it out. The engine revs much sharper now and doesn't bog down so much below 3500rpm, like it used to a bit. Trouble is it still doesn't want to rev right out to 7000 like it used to. I'm gonna build a better bottom end before i go any further here. For anyone interested in weber parts this guy at Motacarb sells airs and mains @ $5.00 +gst. Has anyone used an O2 sensor in a L20B with webbers? This new "no lead" fuel is a bugger for checking fuel mixtures. I'm sure Terry and Errol and co can fill u in on the more technical stuff chris. My information is mostly anecdotal. cheers Mick
----- Original Message ----- From: "Chris King" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, May 26, 2002 6:38 PM Subject: twin webber settings > Hey guys, > > Ive got an L20 with extractors and twin webbers, not sure about the cam, > ive been told its an Ivan tie (?) works 72 deg cam. > 34 - 74 --- 35 - 655 495 valve lift > XO - XC - IO - IC > The engine seems to make power from about 2.5 - 5.5k. does this sound about > right for this cam? > > Also i thought i would check out my webbers and see what kind of settings > they had. > > Carby: 2x 45 DCOE 13 > chokes: 36 > Aux vent: couldn't get out. > Main jet: 150 > emulsion tube: F15 > Air corrector: 160 > idle jet: 50 F9 > acc pump jet: 50 > > haven't opened them up so dont know needle valves etc. > > Do these specs sound about right?Is there anything in the carbys that would > be holding it back from 6.5 - 7k? > > Thanks for your help > > Chris King. > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
