OzVMX Forum

Clubroom => Tech Talk => Topic started by: Davey Crocket on September 09, 2014, 04:35:05 pm

Title: Mikuni PLASTIC Main Jet
Post by: Davey Crocket on September 09, 2014, 04:35:05 pm

Has anyone come across a plastic Mikuni main jet before. I am rebuilding a RM250A motor and was checking the carby jets before starting and came across this. Its a round slide 36mm carb, looks original [doesn't have the idle screw]. It even has the size on it [270]. Just curious.

Title: Re: Mikuni PLASTIC Main Jet
Post by: VMX60 on September 09, 2014, 05:14:07 pm

That is way back, Sold as a aftermarket item Plastic main jets to suit Mikuni , then if you overtighten they change size . maybe late 70s ??? think a K+N  BRAND  :)

Cheers

Title: Re: Mikuni PLASTIC Main Jet
Post by: LWC82PE on September 09, 2014, 05:26:46 pm

They were made by PSI and were called 'Pro-Jet kits' I got a few NOS ones. They also made clear float bowls.

Title: Re: Mikuni PLASTIC Main Jet
Post by: Davey Crocket on September 09, 2014, 05:34:34 pm

Yea, this one has been stretched......big time, undid it with my fingers.

Title: Re: Mikuni PLASTIC Main Jet
Post by: oldfart on September 09, 2014, 05:36:45 pm

Joan  most probably what LWC has quote is correct as you could buy them back in the day ... a bit of "Craft" syndrome creeping in mate  ;)