fuel milage..what to expect?

[JJVIPER]

hey guys....i just finished installing jeffs hh kit...and have cpr pipes.
i just rejetted the carb as jeffs specs..
what are yous getting for fuel milage? i was getting about 8 or 9.mpg.
is that common.. i hope i get better with the new jetting...
john.

 

[VIPER-D]

10 to 11 mpg. I have that set up on my Viper

 

[..SNAKEBIT..]

what specs did he give you for carbs?
before jets? needles? pilots
and now?

 

[JJVIPER]

i bought the pipes from a guy who never used them...
i dont remember exactly...but before. main was 150 across..stock clips..piolets..i dont remember....but air box was unhooked...
now its 47.5-47.5-50
clip in #4 shims 2 above 2 above 2 below
main 160-160-162.5
air box hooked
i know i run it pretty hard...but 9 mpg was the best last year..


john..

 

[sxrsist]

hey john, that was exactly wht i had mine at to,the mid seemed a tad rich, especialy in deep snow riding.idnt check milage but i know its way worse than stock

 

[JJVIPER]

sxrist..what are you running for a set up now??
running rich wasnt the word for it...i heard that jeffs setup is pretty cool.......lets hope....have no snow here now..have to wait till next weekend to try it...

john.

 

[sxrsist]

i had minew the same as you are running, i know it could be better, but our can. gas, is it worth the chance to jet down

 

[SledBoy]

JViper,
Your 150 mains and vent unplugged is Pat Hauck's specs.