Head pipe color?

[turbocamino]

  Several posts led me to believe that running on the lean side would be favorable for these motors (89,1200 stocker) I run a 4/1 exh. an ign.advance,uni pod filters and a dynajet kit.  I opted to use the 114 mains with their needles and springs,with the needles at #2 and one shim.Everything brand new. This is my 5th FJ and i felt like i nailed the jetting this time as the bike ran outstanding,best i ever felt,....started perfect...great idle..no flat spots or hesitations...pulls hard...seamless acceleration ...300 miles per tank..life is good! So..last weekend i pulled the exh.off,which is brand new, and after 2000 miles,looking down the head pipes ,still looks brand new....not a hint of black soot...not ash white either...I have NEVER seen this before. Did i nail the jetting or does this sound lean?  I think the plugs look almost new as well. thanks.

[pdxfj]

300 miles per tank?  That works out to 60 mpg using 5 gallons of fuel.  Something seems a bit odd.  I've got a similar setup as you and I am sweating if I see 180 miles on the odometer and haven't found fuel yet.  Fuel light is glowing bright red by that point.

My Ninja 250 gets between 60-65mpg on the highway and it's completely stock.

Lean is mean, but not long lasting. 

[turbocamino]

  OOPs,  sorry , that should have read 200.

[racerman_27410]

  you would know if it was off... it would be stumbling in the midrange and falling on its face on top.

sounds to me like you nailed it 


Kookaloo!

[mikeholzer]

I get a steady 43-44 mpg on my bone-stock 92 with the mixture screws turned 2-3/4 turns out. 200 miles on a tank is an easy feat for me.

[turbocamino]

  you would know if it was off... it would be stumbling in the midrange and falling on its face on top.

sounds to me like you nailed it 

Yeah,thats a good point...no detonation either..guess i will leave it alone.  thanks guys
Kookaloo!