Jetting for Glamis from 5,500ft

[Mrtaterman]

So a trip to Glamis is in the making, o was just curious to what jetting y'all at sea level are using so I can get an idea to what I should bring.

Current mods on my bike are fmf sst pipes, vf4 reeds, head milled .015, and Toomey intake. Jetting now is 300 mains, needle in middle position ( if I remember right ) 27.5 pilot.

I have many jets, and plan on bringing them all. I would just like a ball park estimate

 

Sent from my XT1254 using Tapatalk

[Strm Trpr]

My jetting is in my sig...

[Jogon30]

I bet you are going to need a 370 main I'm also at About 5500feet and I'm useing a 290 main and my bike at sea level at Oregon dunes was running good at 370

[Strm Trpr]

I've seen ported 4mils run 30 pilots and 330 mains.

 

Why are you guys jetted so fat.

 

For instance, Toomey 2 into 1 intake and T5's at sea level run 27.5 pilots and 270 mains.

 

But that's also 75* weather.

 

If you're super cold at altitude, I believe it's up a main jet/20* difference in temp.

And up a main jet for every 2000ft you come down in elevation.

[Jogon30]

Well right now we're I'm at the weather is cold around 30 degrees maybe 45 highest so far this year

[rubberneck]

figure roughly 1 jet size increase for each 1500 foot drop so im guessing you will have to go up 3 to 4 jet sizes on the mains, im betting your pilots are close at 27.5 maybe need a 30

[Jogon30]

Let me ask you guys a question I run toomy 5's pipes and there website said to use the stock 25poilt or slow jet what does the 27.5 do better? Or why is that a better jet? I see a lot of people useing them.