Noob question - regarding jetting

Betlog · January 5th, 2010, 10:10 PM

Can I re-jet to the default Dynojet settings (3 turns, 98 DJ jet) on my stock exhaust? I plan on adding an Area P exhaust later but would like to ride it with the stock exhaust for now.

(Apologies to the mods as I asked this within one of the other threads but decided to post it on its own thread for visibility...)

HKr1 · January 6th, 2010, 11:50 AM

You can do what ever ya want with the jetting. Stock bike, just putting in the DJ needles works great. I wouldnt up the jet until the pipe is on thou.

Betlog · January 6th, 2010, 12:13 PM

Quote:

Originally Posted by HKr1

You can do what ever ya want with the jetting. Stock bike, just putting in the DJ needles works great. I wouldnt up the jet until the pipe is on thou.

Thank you. But why is it that you don't think I should change the main jet with the stock exhaust? Will I damage something?

kkim · January 6th, 2010, 01:29 PM

If you select the wrong main jet, you can. The question is, why do you think you need to touch the main jet?

rejetting is not a cure all for instant/go fast HP, but rather a means to fix problems that you are having with engine power delivery characteristics.

bigger is not always better.

Betlog · January 6th, 2010, 02:08 PM

Quote:

Originally Posted by kkim

If you select the wrong main jet, you can. The question is, why do you think you need to touch the main jet?

rejetting is not a cure all for instant/go fast HP, but rather a means to fix problems that you are having with engine power delivery characteristics.

bigger is not always better.

Thanks. It's just that I'd rather not open up the bike multiple times. I plan on installing sliders and was thinking of doing the re-jet as well. Then later on, I can install the exhaust.

HKr1 · January 6th, 2010, 02:24 PM

Quote:

Originally Posted by Betlog

But why is it that you don't think I should change the main jet with the stock exhaust?

The mains are rich enough with the stock restrictive exhaust.

Just think of it as getting into the top of the carbs once, and then once again for the bottom when the pipe comes in.

January 5th, 2010, 10:10 PM	#1
Betlog ninjette.org guru Name: Dude!! Location: Southern California Join Date: Dec 2009 Motorcycle(s): 2009 250r Posts: 443	Noob question - regarding jetting Can I re-jet to the default Dynojet settings (3 turns, 98 DJ jet) on my stock exhaust? I plan on adding an Area P exhaust later but would like to ride it with the stock exhaust for now. (Apologies to the mods as I asked this within one of the other threads but decided to post it on its own thread for visibility...)

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January 6th, 2010, 11:50 AM	#2
HKr1 IC2(SW) Name: Kerry Location: Pensacola Join Date: Nov 2008 Motorcycle(s): . Posts: A lot.	You can do what ever ya want with the jetting. Stock bike, just putting in the DJ needles works great. I wouldnt up the jet until the pipe is on thou.

January 6th, 2010, 01:29 PM	#4
kkim Join Date: Nov 2008 Posts: Too much.	If you select the wrong main jet, you can. The question is, why do you think you need to touch the main jet? rejetting is not a cure all for instant/go fast HP, but rather a means to fix problems that you are having with engine power delivery characteristics. bigger is not always better.