PWK carb jetting links...

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PWK carb jetting links...

Postby spiderwebb » Thu Mar 07, 2013 9:58 pm

some of these are for dellorto and also lambrettas... look around and see what you can find that helps you in the jetting dark arts

Heat can be due to advanced timing and not jetting so check the timing is right asap

http://www.ducatimeccanica.com/dellorto ... lorto.html
http://www.lambretta.co.uk/downloads/carbjetting.html
http://www.lambretta.co.uk/downloads/sparkplug.html
http://www.lambretta.co.uk/downloads/carbsetup.html
http://www.carbparts.com/keihin/needles ... tuning.htm
http://keihincarbs.com/tips/gate.html
http://www.lambretta.co.uk/downloads/sparkplug.html
http://scootrs.com/tech.cfm?tip=jetpwk
http://www.keihin-us.com/am/_media/pdf/ ... eedles.pdf
http://thisoldtractor.com/gtbender/dellorto.htm
http://www.smellofdeath.com/lloydy/jetting.htm

here is the basic jetting overlap
Image

use a 40 idle or above and a needle that works in the 2nd or 3rd clip position... the needle taper steepness is going to effect which clip position works at all along with the main since they both "overlap" @ 3/4th throttle.

Be Safe = watch your temps and make sure you CDI is retarding to the desired timing #... as those CDI's fail they can revert back to a advanced timing # that would melt your piston fast...!!
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Re: PWK carb jetting links for Grambo

Postby Grahamcracker » Sun Mar 10, 2013 10:33 pm

Thanks for compiling this! Will make for easy referencing...
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