Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models
by kennystag » Sun Jan 17, 2016 4:27 pm
Hi All,
Anybody tell me the sizes of the jets in a Jetex 22 mm carb.
Cheers
Stag

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kennystag
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by HxPaul » Sun Jan 17, 2016 4:41 pm
It just depends what your engine set up is.I have one on my series 2 big block motor with a Casa 210 top end and clubman exhaust.I have a 130 main jet,48 pilot jet and a 50 choke jet,this all runs through a drilled airbox.A standard GP200 uses a jetex with a 118 or 123 main jet,depending on the type of exhaust used and a 45 pilot jet and a 50 choke jet.
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HxPaul
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by kennystag » Sun Jan 17, 2016 5:16 pm
It was the sizes of the standard Jetex 22mm jets.
Stag
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kennystag
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by ToBoldlyGo » Sun Jan 17, 2016 5:27 pm
From memory it would be a 45 pilot, 5899.2 atomiser (not that it will be marked) a 118 main and 50 choke.
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ToBoldlyGo
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by HxPaul » Sun Jan 17, 2016 5:46 pm
The size of the atomiser and slide differ dependant on wether you have a 150 or 200 carb.The 150 carbs have a 5899-4 atomiser and a slide with a cutaway in the back,but a 200 carb has a 5899-2 atomiser and a plain slide(no cutaway)
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HxPaul
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by ToBoldlyGo » Sun Jan 17, 2016 6:28 pm
Yes, Paul is right. You need to know if it's a 200 or not.
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by kennystag » Sun Jan 17, 2016 6:33 pm
Sorry it is a 150cc.
Stag
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