Jetting advice

[Silver]

I read every page of the jetting thread and I'm still scratching my head.Here is what I have in the bike now.
2007 EC 250
N1eg Needle
3rd clip from top
180 main
42 pilot
#8 slide

Racing an enduro 800-1000 ft temps so they claim 52* but race will start in the 40* and may stay that cold all day .This is the set up I run all summer plug is perfect and bike runs perfect.Would I be safe going with a 185 main and a 48 pilot there are some 6th gear fields and would rather not melt it down but don't want to be to rich just in case it does warm up.thanks Mike

 

[J D]

What bike have you got Mike?

 

[Silver]

Some bike info would help good catch JD 2007 EC 250.Sorry I was making sure I had jetting correct and forgot the bike.

 

[MattR]

Mike,

The 185 main looks good, but the 48 pilot may be too rich. A 45 pilot may be a better match to your current summer jetting. If you went with the 48 pilot, then you may need to back out the air screw to help lean the 0-1/8 throttle a bit.

You should be receiving a PM from me.

 

[GG27]

I think your jetting is good for hot dry summers, I have used your setup in Greece with no problems, but for cold weather racing I would go to a N1EF needle on the 2nd or 3rd clip with a #7 slide. The 42 pilot is just right, I have tried the 45 with a #8 slide and it has similar results with the 42 and #8 slide.
I use 178 to 180 main with the F needle with a 2% full synthetic oil mix, and have no issues after long transfer sections @ WOT. Try it, it gives a nice strong mid-range.

 

[Silver]

I'm stuck with this needle as i have no time to get another one.So have to come up with a setup around the N1EG needle. My thougts are to go with 185 main and 42 pilot and leave needle as it is set. I thought I had a 45 but do not so left 42 in and turned in air screw it is now out 1.5 turns.

 

[GG27]

Do you have a #7 slide? It will help in the colder weather. IMHO I would go to a 182 main.

 

[Silver]

No I don't have a #7 slide.You think I will be safe with a 182.Temps look to be around 45 degrees mid day high 30's to start race.

 

[GG27]

I think the 182 is O.K. together with a 1 to 50 oil ratio. The G nozzle has the same diameter as the LTR and CCK needles, which do not have any issues when driven WOT. I would play with air screw, I had it down to 1/2 out in such weather conditions with the #8 slide. You could also try raising the needle 1 clip as well. Ever bike is just that bit different so you have to try various set ups till you find which suites you.

Good Luck in your race

 

[Silver]

Thanks I went with the 185 42 pilot and air screw is 1 turn out rode it last night and seemed okay.Sounds like the race is going to be muddy so speeds may be slow.Weather man is not sticking his neck out to far on temps 51-37 degrees so I'm guessing some where in the middle.

 

[Silver]

Thanks for the help my jetting was spot on .The 185 main did it's job top speed of 72 yesterday across a corn field nothing like grabbing 6th and passing some orange bikes .My GasGas performed great love the power delivery in the mud. I ended up getting 1st in Vet B at the Turkey Creek enduro.It was muddy but the sun shined all day great way to end the season.

 

[MattR]

Thanks for the follow-up ride report. Congrats on getting 1st place! That's awesome.