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Weber 32 36 jetting?


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stock pump jet is a shit 50 single-sided one, get a new 55 pump jet, or maybe a 50 is better for stock l20b?

 

What are main jet sizes? What are air jet sizes? What are idle jet sizes? How many turns is the idle mixture out?

 

http://www.racetep.com/webjettune.html

 

Stock L20b should be like...140/145 main, 170/160 air, 60/50 idles. (primary/secondary)

 

I've been getting help from a pro tuning my L20b with 32/36 with a 475 lift cam and its nearly dialed in ... I think I may be able to provide some insight. Stock jetting is easy.

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Hey not to hijack this thread but also can there be light be shined on good jet settings on an l18? My motor is a bit tired at 160psi comp. I'm running the starter jets with a weber kit from the previous owner. 135/140 f6/f50 etc etc. I'm one turn out on the idle screw but still get all blackened plugs.

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I'm one turn out on the idle screw but still get all blackened plugs.

 

Check primary idle jet size.

Check Secondary idle jet size. Should be 10 less than primary.

 

Replace with smaller idle jets, should be like 55/45 for l18.

 

Should run fantastic in the high end, crap in the low end if 1 turn out and rich. Might need 140/145 primary jets. See how it runs after fixing the idle circuit.

 

 

 

Hainz you would probably feint if I told you the jet setting on my cammed L20b.

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