Siqx20 Posted June 20, 2011 Report Share Posted June 20, 2011 Home made venturi kit?? Pulled these out if my carb. They look home made. My question is why?? Also I am pretty sure im jetted wrong. I feel like im leaning out. Any tips on jet sizes. Stock l20 Primary air: 170 Primary main: 120 Primary idol: 65 Prmary e tube: f50 Secondary air: 160 Secondary main: 120 Secondary idol: 50 Secondary e tube: f50 Pump jet: 50 Quote Link to comment
MicroMachinery Posted June 20, 2011 Report Share Posted June 20, 2011 What kinda carb? Quote Link to comment
Siqx20 Posted June 20, 2011 Author Report Share Posted June 20, 2011 Webber 32/36 Quote Link to comment
yello620 Posted June 21, 2011 Report Share Posted June 21, 2011 Both of your primary main jets are too small and the primary idle seems a size too big. Common L20 main jets are closer to a 140, and the primary idle is usually a 55 0r 60. All the other numbers look normal to me. Quote Link to comment
Siqx20 Posted June 21, 2011 Author Report Share Posted June 21, 2011 Should my mains be the same size? Quote Link to comment
ggzilla Posted June 21, 2011 Report Share Posted June 21, 2011 Looks like air horns, not homemade but the mounting is dodgey. They are good for a couple % HP Quote Link to comment
Siqx20 Posted June 21, 2011 Author Report Share Posted June 21, 2011 Looks like air horns, not homemade but the mounting is dodgey. They are good for a couple % HP They were down inside my venturi. Pretty sure they were being used to restrict the amount of air flow. a janky way of compensating for my to small of jetting. Noone has any other opinions on jetting??? Should i be running both my mains at the same size? Oh DGV gurus help me!!! lol Quote Link to comment
ggzilla Posted June 21, 2011 Report Share Posted June 21, 2011 The main jets should not be the same size. Any tips on jet sizes. Stock l20 Primary air: 170 Primary main: 120 Primary idol: 65 Prmary e tube: f50 Secondary air: 160 Secondary main: 120 Secondary idol: 50 Secondary e tube: f50 Pump jet: 50 Here is Weber's recommendation for a stock L20B: Main Venturi: 26/27 Aux Venturi: 3.5/3.5 Main Jet: 140/135 Em Tube: F50/F6 Air Corr Jet: 165/160 Idle Jet: 55/50 Pump Jet: 50 Needle Valve: 2.00 Quote Link to comment
yello620 Posted June 22, 2011 Report Share Posted June 22, 2011 Yes, they list the mains to be 140/135, but i have taken apart several and most of them had 140/140 mains. I might even have a couple 140's if you want to try them before buying, if you get up near portland(I5) area.Nnot really worth throwing money at shipping when you could spend that money on the jet. Quote Link to comment
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