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Sorting 22mm Jetex

Posted: Sun Sep 04, 2016 5:32 pm
by nellyboyo
I know they are not the best and I don`t have them on my scoots but I`ve acquired very cheaply a newish 22mm Jetex to put on my mates rebuild. ( 150cc with a clubman ) .
I know they need some sorting out but what does this involve altogether ?
I`ve used Kehin`s for the past few years on my scoots and my knowledge of where to start ballpark jetting for these is pretty much zero . Does something need drilling out as with some poor quality OKO`s ?
Cheers for any help. He`s only going to be pottering about the locality.

Re: Sorting 22mm Jetex

Posted: Sun Sep 04, 2016 6:20 pm
by Doom Patrol
Make sure you have the 150 slide first. It'll be the one with the large cut out. Make sure the float is clean, with no rough edges, and moves freely. Some do drill out the needle valve to get a better flow of fuel. But that may not be necessary on a 150. Change the jets to genuine Dell'orto ones. That's about it really.

Re: Sorting 22mm Jetex

Posted: Sun Sep 04, 2016 9:57 pm
by davla
I fitted a Jetex to my GP200 because a I couldn't get the 22mm Dellorto working properly and it runs great despite their bad reputation.

Re: Sorting 22mm Jetex

Posted: Mon Sep 05, 2016 7:02 am
by nellyboyo
OK tidy, thanks for the info

Re: Sorting 22mm Jetex

Posted: Mon Sep 05, 2016 10:35 pm
by shocky
Check there is a gasket at the top as well worked on 3 bad runners allhad nottop gasket fitted and leaked air , I have never had any problem using them I suspect alot of people have change things on a poor running scooter one being the carb but becouse they havent done so systematically they dont know whats caused it and becouse a bloke down the pub said there shiite they get the blame

Re: Sorting 22mm Jetex

Posted: Tue Sep 06, 2016 7:06 am
by nellyboyo
thats why I got 2 for £18 then !

Re: Sorting 22mm Jetex

Posted: Tue Sep 06, 2016 9:41 am
by EddieStone
I bought one of eBay and it arrived with no jets and no float. Not impressed.

I think that was the last scooter part I bought off eBay

Re: Sorting 22mm Jetex

Posted: Tue Sep 06, 2016 9:49 am
by nellyboyo
These are supposed to be used and complete....I bloody hope so ...I`ve got tonnes of Kehin parts , no dellorto

Re: Sorting 22mm Jetex

Posted: Fri Jun 30, 2017 9:09 am
by dazblakey
Reopen, I can't afford a dellorto at the moment but changing my barrel etc to a 186 as it's had a melt down, got a sterling exhaust, I will have to rejet it any clues what it will need please

Sent from my D6603 using Tapatalk

Re: Sorting 22mm Jetex

Posted: Fri Jun 30, 2017 9:09 am
by dazblakey
Reopen, I can't afford a dellorto at the moment but changing my barrel etc to a 186 as it's had a melt down, got a sterling exhaust, I will have to rejet it any clues what it will need please

Sent from my D6603 using Tapatalk