fuel consumption

[bonkeye]

my 2000 GasGas 300 ec compared to a friends 02 KTM300 exc my bike has a drink problem, we both have 12L fuel tanks and similar riding style etc but he still has a 1/3 of a tank left when have to go on reserve, my jetting is 40 - 180 - 2nd clip from the top float level is spot on and there is no fuel leaks on the bike

Could I drop the needle putting on the top clip and say come down to a 178 or even a 175 main? But leave the pilot circuit as it is?

[Fred1956]

Look here for something similar in elevation etc http://www.gasgasrider.org/forum/showthread.php?t=2162

I'd say the 180 is way to rich 175 at least

[webmaster]

What needle are you running? That era gasgas came with an n1ef needle or close to it and other needles will work better and provide better efficiency.

And fuel consumption is helped by dialing in the Squish - have head machined to optimize combusion & compression ratio.

jeff

[bonkeye]

Originally Posted by webmaster

What needle are you running? That era gasgas came with an n1ef needle or close to it and other needles will work better and provide better efficiency.

And fuel consumption is helped by dialing in the Squish - have head machined to optimize combusion & compression ratio.

jeff

the neddle i have is a N1EF, not looked into having the head machined

[Diggs345]

What you doing on the computer you should be out riding , I'm stuck working in milford haven , n1ef is not the best needle , and doing the head makes a big difference too.

[bonkeye]

Originally Posted by Diggs345

What you doing on the computer you should be out riding , I'm stuck working in milford haven , n1ef is not the best needle , and doing the head makes a big difference too.

what needle you think i should get? i have been on the look out for a CCK needle but not seen one

[MNKeith]

You say "similar riding style" but are you sure? It may not just be a fuel/jet issue.

Bikes geared the same?
Does one of you ride a gear higher or lower than the other one more often than you realize?

Those two can contribute to a fair amount of MPG differences.

[bonkeye]

Originally Posted by MNKeith

You say "similar riding style" but are you sure? It may not just be a fuel/jet issue.

Bikes geared the same?
Does one of you ride a gear higher or lower than the other one more often than you realize?

Those two can contribute to a fair amount of MPG differences.

both bikes are gear the same but i guess your right on higher or lower gear

[bonkeye]

for this weekend i was thinking of keeping the N1EF and just put the needle on the top clip and drop the main jet to 175 to see if the fuel consumption gets better but im worried about doing any damage from making it a little leaner?

would it be fine ?

[Jakobi]

The N1EF drinks. When my 2010 EC300 was stock, even on top clip I'd be switching to reserve at 70kms (of mostly fire trail not riding hard). Going to the Yamaha/KTM N3 Series saw an immediate improvement in fuel economy. Easily 10km/L