650sx with a 46 mm Mik??? jetting?

[tor*p*do]

How do you tune this thing?
The carb is about as big as the bore of the cylinder :261:
and idea where to start on jetting?
thanks!

 

[ags0702]

1) Remove Carb.
2) Place on superjet intake.
3) Put rest of SX in shed.

 

[tor*p*do]

yeah, yeah, but not my ski
not sure how that carb got on there

too much :beerchug: and :439: probably!

 

[Cliff]

my last sx had a 122.5 low and a 180 high jet. it also had lots of compression and a pipe along with other goodies.

 

[WFO Speedracer]

Start with about a 105 pilot and a 145-150 main ,one turn out on the needle 20 lbs pop off,that should get you pretty damn close.

 

[tor*p*do]

this new from the box 46 carb should have 120 lo/150 hi stock in it
is 120 lo too rich?
cranked it at 1/1 turns and it was revving lean
at 1.5/1.5 it seemded fine :ugh:
have not had it in the water

 

[kevbo]

That carb is too big for your application. Find a stock carb and manifold from a 91-95 650sx or x2.

 

[u887266]

I will have to agree with kevbo. The 650 engine doesnt need anything bigger then a 44, a 46 is just too big and your not going to gain anything by putting that big a carb on a ski that doesnt even have any kinda mods done to it. Thats just my 2 cents.

 

[WFO Speedracer]

I will third that I misread it,I though we were dealing with a 44,the 46 is way too big and will be a jetting nightmare,get a 44 and be done wit it.

 

[tor*p*do]

pulled the 46, will sell it shortly
found a NIB 44
Wedo . . . I mean WFO, this advice still OK? Thanks!

Start with about a 105 pilot and a 145-150 main
one turn out on the needle 20 lbs pop off
that should get you pretty damn close.