dyno jet kit sizes
#1
#2
#3
Yes, there is a difference in the sizes, I measured the stock 140 and the dynojet 140 and found .0025" difference. I have installed the DJ kit in my bike and have been fighting it for over a week now. I followed the instructions exactly, and it runs great at an idle and wide open. When I am at about 1/4 to 1/2 throttle it surges and pops, I called the DJ tech line to see if they could help, I think I need to change the pilot jets also, when I asked the guy at DJ he said the pilot is for IDLE only. That was when I knew I was wasting my time. If you are thinking of buying a DJ kit ($87+-), take your money and go to the dealer and get a few jets in each size larger than what you have stock, then go up on the sizes and check the plug.
#5
#6
RAPTRRIDER,
I just did the same thing, I followed the directions as it said and the same thing happened. It sputters and runs rough at 1/4 to 3/4 throttle. Actually, I put the recommended jets in, and it ran poorly, then I went down a size and it does it even worse! I don't get it. It's a pain trying to change the jets with out taking everything off. I give up.
I just did the same thing, I followed the directions as it said and the same thing happened. It sputters and runs rough at 1/4 to 3/4 throttle. Actually, I put the recommended jets in, and it ran poorly, then I went down a size and it does it even worse! I don't get it. It's a pain trying to change the jets with out taking everything off. I give up.
#7
Jad,
My Raptor is mostly stock, the only thing I have done to the engine is advance the timing (another wast of time and money), and remove the spark arrester in the stock pipe ( to see if that would make a difference ), I am thinking of ordering a curtis sparks complete exhaust, and an air box that a friend of mine is making from Pingry Motorcycles in Tehachapi,Ca., they are also making an oil tank that holds more oil and has cooling holes in it. when I do that I will spend more time again with the jetting, for now I am back to stock (even glued the restrictors back in the air snorkel)I NEED to go riding this weekend.
My Raptor is mostly stock, the only thing I have done to the engine is advance the timing (another wast of time and money), and remove the spark arrester in the stock pipe ( to see if that would make a difference ), I am thinking of ordering a curtis sparks complete exhaust, and an air box that a friend of mine is making from Pingry Motorcycles in Tehachapi,Ca., they are also making an oil tank that holds more oil and has cooling holes in it. when I do that I will spend more time again with the jetting, for now I am back to stock (even glued the restrictors back in the air snorkel)I NEED to go riding this weekend.
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#8
#9
thats the thing,everyone you call,pipe companys,ect,all know what jetting to run for SEA LEVEL but they dont have a clue what to run at higher alltitudes.leads me to belive they just care about sand jockeys on the coast.i dont know how many times i ordered a pipe or something and ask what jetting to run and they tell me sea level specs that i already new from reading it on here,even after you tell them you ride around 3500ft.they dont have a clue what to run and most of the time act like they could care less.i thought dyno jet tested there kits?