OzVMX Forum

Clubroom => Tech Talk => Topic started by: YUMASTEPSIDE on May 17, 2009, 08:57:57 am

Title: Power jet vs standard
Post by: YUMASTEPSIDE on May 17, 2009, 08:57:57 am

Is there any benefit of using a power jet carb over a standard Mikuni ( on my '78 PE175 )

                         Roger

Title: Re: Power jet vs standard
Post by: mboddy on May 17, 2009, 01:56:12 pm

Only if you sometimes use more than half throttle.
If not then sell the bike and get a TS185ER.

Title: Re: Power jet vs standard
Post by: YUMASTEPSIDE on May 17, 2009, 06:47:08 pm

..........so, that would be a yes then ! Will it give an increase in top end over a standard carb ?

                         Roger

Title: Re: Power jet vs standard
Post by: LWC82PE on May 17, 2009, 06:55:24 pm

yes, extra juice at wide open throttle

Title: Re: Power jet vs standard
Post by: Lozza on May 17, 2009, 07:46:35 pm

Won't make 1 iota differnce to top end. All the PJ is is another circuit to the carb, saves the problem of having to have the air corrector to big to compensate for the natural richening of the fuel curve. So, instead of having the carburation either good on the needle and lean on the main or spot on on the main and rich on the needle with the PJ you get the needle right and then adjust the main/PJ to get it right over 3/4 throttle. Not  something really needed on a vmx bike.

Title: Re: Power jet vs standard
Post by: LWC82PE on May 17, 2009, 07:53:36 pm

yeah it splits the function of the main jet