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Re: Vespa PX 221 help
Posted: Fri Jun 05, 2015 10:51 am
by smiffy1968
1.3mm at the moment. It'll probably hang up in the shed for now. The spacer.
Re: Vespa PX 221 help
Posted: Fri Jun 05, 2015 4:44 pm
by Norrie Bodge
Nik221 wrote:And what's your squish band? Today I put my phbh 28 carb on and I have to say what a bloody difference!! I can't explain the difference!!
Squish is at 1,5mm m8
Re: Vespa PX 221 help
Posted: Fri Jun 05, 2015 5:19 pm
by Nik221
Thanks, my squish is very big then I need to sort that out.
Re: Vespa PX 221 help
Posted: Sat Jun 06, 2015 11:10 am
by smiffy1968
What is your squish Nik?
Re: Vespa PX 221 help
Posted: Sat Jun 06, 2015 1:13 pm
by Nik221
I used a 2mm thick solder wire and it didn't touch it so it is more than 2 and that is probably bad.
Re: Vespa PX 221 help
Posted: Sat Jun 06, 2015 10:48 pm
by Nik221
I am in need for some jetting help with my phbh 28. What shall I start from?
Re: Vespa PX 221 help
Posted: Sun Jun 07, 2015 3:11 pm
by smiffy1968
Have a look on here Nik. Carb set ups for Vespa and Lambreta. Good info.
Re: Vespa PX 221 help
Posted: Mon Jun 08, 2015 2:40 am
by Ginch
Re: Vespa PX 221 help
Posted: Sat Jun 13, 2015 7:03 pm
by Nik221
Today I went for a ride and my mate was in his car going behind me and he said that we were going 135 km/h and when I took the plug off it was a bit on the white side. Main jet is 115 idle55 x40 needle bottom notch don't know the atomizer is though.
Re: Vespa PX 221 help
Posted: Sun Jun 14, 2015 10:56 pm
by smiffy1968
Hi Nik, good speed and good news[youtube]
. I've upjetted mine to 135 main, still clean through rev range and fast! Going higher on main. You think you have main jet on your Delly right now?