OzVMX Forum

Marque Remarks => Spaniards (Bultaco, Ossa, Montesa etc) => Topic started by: xel93 on October 08, 2013, 09:24:04 pm

Title: Phantom mikuni jetting specs
Post by: xel93 on October 08, 2013, 09:24:04 pm

G'day  does anyone know what a good starting point is for jetting a 36mm Mikiuni on a 74 Ossa Phantom?  It is currently on a 330 main and blubbers away 
thanks Lex

Title: Re: Phantom mikuni jetting specs
Post by: VMX60 on October 08, 2013, 10:43:36 pm

Lex
What are you running needle and needle jet ???

Best specs for my Phantom std porting and pipe
 98 fuel 32 to 1 ratio TTS castrol
36 Mikuni

310 main
40 pilot
Q0 needle jet
6F22 needle  middle clip
O2 air jet

Have also used 6F5 double taper needle with good results
Cheers   :)

Title: Re: Phantom mikuni jetting specs
Post by: 09.0 on October 09, 2013, 06:32:35 am

Do you have to run different intake and airbox boot?

Title: Re: Phantom mikuni jetting specs
Post by: xel93 on October 09, 2013, 08:35:27 am

Thanks very much VMX60!

I think it is the std intake there is one I layer of tape around the end of the carby to take up any gap when pushed into the inlet rubber.  It is a very neat fit and looks secure even before the clamp is tightened.  Not sure about the air box boot by looks original.