Need someones advice on this one. 450r no lid K&N, Sparks pipe, hrc cam with a 185 main. Well this weekend while i was sitting waiting to hot lap at a race my head pipe was glowing throughout the bend. After the hot laps i went and put my lid on (latched the front 2 clips, left the back 2 undone) and it never did it again. Now my question what size jet do i need to go to at 900 above sea level (Oklahoma)? Thanks in advance for any help.

 

It is caused from being lean on the pilot jet. Go up one size there, and it should be good.

 

What is stock, 48? I also think i have a 55 in the pilot jet, I'm not sure it was early summer when i did it all.

 

Yeah, I think stock is 48. I am gona guess a 55 is way to big, but maybe not? Look to see what it is for sure.

 

It makes sense the pilot jet not being right. IT was a lil harder to start.

 

i'm going to get the next 2 sizes and i'm willing to bet that will cover it.