Page 1 of 1
28mm dellorto jetting / starting point
Posted: Wed Feb 05, 2014 7:27 pm
by jamjo
Hello posting for a mate . He has a gp 200 stage four barrel jl3 exhaust and was going to fit his 28mm carb back on scooter , it was taken off when some work was done and he intended to give it a strip and good clean . Trouble is he put the jets in a bag and has now lost the bag also can't remember what the jetting was

. Can anyone help with a rough idea to get us started .
Thanks in advance
.... Can't find anything for this in carb section , or maybe not looking hard enough

Re: 28mm dellorto jetting / starting point
Posted: Wed Feb 05, 2014 8:22 pm
by goldeneye
x7 needle, AV264 atomiser, 122 main jet, 50 pilot, 70 choke jet, 300 float needle jet. that should get ya in the park.
Re: 28mm dellorto jetting / starting point
Posted: Wed Feb 05, 2014 8:40 pm
by jamjo
Thank you Goldeneye.

Re: 28mm dellorto jetting / starting point
Posted: Thu Feb 13, 2014 9:20 pm
by jamjo
Any help as to why the above set up given seems to bog down using a ram air filter . It runs better without the filter but we wanted to use one to protect the bore from premature wear .
Re: 28mm dellorto jetting / starting point
Posted: Thu Feb 13, 2014 10:16 pm
by rosscla
I'd have thought adding a filter will, however slightly, richen it by restricting the amount of air.
Where in the range is it boggy?
Re: 28mm dellorto jetting / starting point
Posted: Thu Feb 13, 2014 11:05 pm
by goldeneye
48 pilot/120-118 main jet. try that.
Re: 28mm dellorto jetting / starting point
Posted: Fri Feb 14, 2014 8:57 am
by jamjo
Thanks once again goldeneye , will give that ago if it ever stops raining
Regards James