21mm race Dellorto to big 4 polini kit?

Subject syas it all. Is the 21mm to much foor the polini??? Trying to locate a 19mm race but unable to find

Re: 21mm race Dellorto to big 4 polini kit?

) Cupermcnewbster ( /

no. It works fine. Check the tuning sheet. I ran a 21 for months and it was fast and actually easier to dial in than my 19.

Re: 21mm race Dellorto to big 4 polini kit?

You could run a 19mm on a stock cylinder. Over-carburetion is a myth.

Re: 21mm race Dellorto to big 4 polini kit?

Agreed. The only time you might be over-carburated is if your carb flowed more than your reed cage could flow. In which case you would just need a bigger reed cage.

Re: 21mm race Dellorto to big 4 polini kit?

) Cupermcnewbster ( /

curious tommy, how would you determine how much a reed cage can flow. Like could a typical malossi 4 petal handle a 24mm? It'd think yes, but theres probably some math or something behind it.

Re: 21mm race Dellorto to big 4 polini kit?

Theres math for it. Its in Bells two stroke tuner book I believe. Shaw was kind of explaining it to me one day. I believe a malossi 4 petal could handle it. I know shaw has a 24 on a malossi 4 petal. I dont know if he did the math for it, but the bike rips, but maybe the reed cage isnt take full advantage of the carb, but in that case I think it does.

Re: 21mm race Dellorto to big 4 polini kit?

) Cupermcnewbster ( /

ok cool. look out for some neat stuff coming soon!

Re: 21mm race Dellorto to big 4 polini kit?

I am curently running a 21mm dellorto phbg on my 50 50 morini project and it has never run better . Stock modified reed cage IS holding me up ? Mid 40s are a normal range but the solid 50 mph on flat ground is tough. Im 240 lbs , anyhow the 21mm phbg is going to help get my 50cc morini to the end goal , I have no dought .

Re: 21mm race Dellorto to big 4 polini kit?

I hope you are putting a mikuni on a polini. I have been waiting to see the results.

Re: 21mm race Dellorto to big 4 polini kit?

tomo parma? yes please.

Re: 21mm race Dellorto to big 4 polini kit?

tomo parma is old news. blows polini's outta the water.

Re: 21mm race Dellorto to big 4 polini kit?

never run your polini in water

Re: 21mm race Dellorto to big 4 polini kit?

how is the polini/simo? does it require a hack job?

Re: 21mm race Dellorto to big 4 polini kit?

) Cupermcnewbster ( /

fits fine no hack but no pedals. Performance is marginally (like 1 mph) better than n8p, but worse cause you cant pedal.

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