Page 1 of 1

34mm Polini Carb... Jetting?

Posted: Sat May 02, 2020 5:46 pm
by Adam_Winstone
Hi all,

Is anyone running a 34mm Polini carb on a piston port motor? If so, got a starting point for jetting please?

Once we're allowed back out onto the roads then I can start to evaluate any setup that I start with, however, knowing what others may be using would give me a place to start.

Thanks in advance.

Adam

Re: 34mm Polini Carb... Jetting?

Posted: Sat May 02, 2020 5:48 pm
by Adam_Winstone
The Polini is Keihin / PWK type carb.

Re: 34mm Polini Carb... Jetting?

Posted: Mon May 04, 2020 9:55 pm
by Mrnice71
Hooray some progress lol , one thing l wondered does the float needle valve come in different sizes or is it one fixed size ?

Re: 34mm Polini Carb... Jetting?

Posted: Tue May 05, 2020 10:07 am
by coaster
Mrnice71 wrote: Mon May 04, 2020 9:55 pm Hooray some progress lol , one thing l wondered does the float needle valve come in different sizes or is it one fixed size ?

One size I think but pattern pwk's often need the jetway drilling out to prevent fuel starvation. There should be plenty of info on that on the web along with setting the float hieght

Re: 34mm Polini Carb... Jetting?

Posted: Tue May 05, 2020 12:56 pm
by Adam_Winstone
^... Yes, this was a very common issue with some copies but I hope that it will not come to light on this Polini version, time will tell.