ball park for main jet ?

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FREAK
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Posts: 58
Joined: Tue Feb 15, 2011 1:02 pm
Main scooter: Rb225 GP LAMBRETTA
Location: gomersal
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just put together a p225 mazz race crank 225 kit and a stainless jl pipe .ball park for main jet wanted (rich of corse till its dyno'ed) cheers jon
gaz_powell
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Joined: Sat Mar 28, 2009 1:10 pm
Location: hartlepool
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what kit and carb ?
FREAK
registered user
Posts: 58
Joined: Tue Feb 15, 2011 1:02 pm
Main scooter: Rb225 GP LAMBRETTA
Location: gomersal
Contact:

nowt flash just a 225 kit and a stock p200 carb
gaz_powell
registered user
Posts: 1208
Joined: Sat Mar 28, 2009 1:10 pm
Location: hartlepool
Contact:

cast or ali ? mazz race or standard ?

would start at 130 and come down

might want to up the pilot as well 55/160 is standard at 2.9
52/140= 2.7 richer or 60/160 = 2.6 richer

depnding on the kit be careful on the clearance they are often a bit tight - would check it out and go 4 thou clearance

set timing at px125 mark on the stator 17-18 degrees

have seen some of the ali kits were the liner is out and the ports need work to tidy up and bring the timings in line

best of luck and keep us posted
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