My MPG

[1tinindian]

I have read of others MPGs being in the 40-50 mpg range.
I have been riding my FJ to work for nearly a month straight now, and am only seeing 33-34 mpg.
This is even after changing sprockets to 18/39 over the old 17/40.
When the bike was stock I was seeing right around 38-39 MPG with a 40 once in awhile.

I'm only running a little less than 40 miles per day and my carbs have been re-jetted by RPM, (and perform great by the way!).

I feel the lack of more distance riding and staying out of the Kookaloo juice may help the situation, but then what the hell would be the fun in that!

So am I getting a reasonable MPG for my current riding circumstances?
I was expecting at least a slight increase in MPGs after the gear change.
Or do you think that the FJ is just running that much better and I just can't stay out of the throttle, (which I admit that I do have a problem with.!)
I usually cruise at 75-80 MPH and and overtake most everything I meet on the road.

Leon

[FJmonkey]

That is about what I was getting at the same driving speeds.

[Firehawk068]

I usually see 40-41 around town, and on longer rides........doesn't seem to fluctuate much.
I just filled up today, and saw 44mpg on my last tank, which most of it was my ride in the mountains last weekend.........

[Flynt]

I used to get about 38 in normal/mixed with the orig engine.  Today I got 38 riding up to Tahoe with daughter and luggage on the 1349cc/FCR39 beast.

BTW Pat - they ran great from 100ft to 8000ft+... Less power at altitude, like any normally aspirated engine, but still plenty to make the front end very light passing in 6th.  I think you might be able to run these.

Frank

[FJmonkey]

I used to get about 38 in normal/mixed with the orig engine.  Today I got 38 riding up to Tahoe with daughter and luggage on the 1349cc/FCR39 beast.

BTW Pat - they ran great from 100ft to 8000ft+... Less power at altitude, like any normally aspirated engine, but still plenty to make the front end very light passing in 6th.  I think you might be able to run these.

Frank

Frank, you big fibber, the FJ, as much as we want, does not have a sixth gear...

[racerman_27410]

leakdown test? last valve adjustment? use any oil between changes? 

.... filling up at the same pump every time?

how many times do you see triple digits per tank?    

KOokaloo!

[yamaha fj rider]

I have gotten 50mpg when I had to be a good boy. Normally not that good but allot more fun.

Kurt 

[Flynt]

Frank, you big fibber, the FJ, as much as we want, does not have a sixth gear...

Randy didn't tell you about the 6 speed upgrade? 

Too much time on the Beemer I guess...  Ok, 5th with 18/42.   

Frank

[FJmonkey]

Randy didn't tell you about the 6 speed upgrade? 

Too much time on the Beemer I guess...  Ok, 5th with 18/42.   

Frank

Just keeping you honest Frank, nothing but love for you.....

[AustinFJ]

Frank, you big fibber, the FJ, as much as we want, does not have a sixth gear...

Randy didn't tell you about the 6 speed upgrade? 

Too much time on the Beemer I guess...  Ok, 5th with 18/42.   

Frank

Or 18/39... Remember E=mc^2 (c being velocity of the FJ, almost like light, in this case). The energy of speed rises at the square of mass. 

What I'm trying to say is... It's always better to go faster, even for a battle tank like the FJ!   

[1tinindian]

leakdown test? last valve adjustment? use any oil between changes? 

.... filling up at the same pump every time?

how many times do you see triple digits per tank?   

KOokaloo!

LEakdown test- No
Last valve adjustment- This spring.
No oil used between changes that I have noticed
No, I do not use the same pump every time.
My last tank ran me 170 miles and the red fuel light was on for the last 10 miles.

Leon

[yamaha fj rider]

More polishing might help. 

Kurt

[Firehawk068]

More polishing might help. 

Kurt

I heard that smooth, polished surfaces create more drag..................It's gotta be dimpled, like a golf ball......There needs to be some boundary-layer attachment to a rough surface to keep the air flowing over smoothly......Thats why I leave my bike dirty most of the time........or all my vehicles for that matter.
Or it could be that I'm just too lazy to wash them. 

Leon, you need to dimple your FJ to get better mpg's............Next hail storm, I'm pushing mine outside....

[1tinindian]

More polishing might help. 

Kurt

I heard that smooth, polished surfaces create more drag..................It's gotta be dimpled, like a golf ball......There needs to be some boundary-layer attachment to a rough surface to keep the air flowing over smoothly......Thats why I leave my bike dirty most of the time........or all my vehicles for that matter.
Or it could be that I'm just too lazy to wash them. 

Leon, you need to dimple your FJ to get better mpg's............Next hail storm, I'm pushing mine outside....

That would be counter-productive to everything I have done up to this point.
I'll keep the 34 MPGs over any dimpling! Thanks. LOL!

Leon

[FJSpringy]

More polishing might help.  

Kurt

I heard that smooth, polished surfaces create more drag..................

this is true, I used to race r/c one meter sailing yachts and one of the common mistakes by the new guys was to polish their hulls, you need to break up the surface tension between the water and the hull, polishing makes the water grab the hull.


I suspect the reason my FJ is so dirty is that every time I wash it goes slower  


BTW I get shitty gas mileage but it took me 20 dyno runs to get there, now the fuel gauge is disproportionately connected to the twist grip.

I start looking for fuel after about 250kms (so probably get 300+ out of a drained tank) , your getting 100 or so on top of that I would be very happy..