jetting for pipes

[liquedfire]

I'v never jetted anything in my life lol so any help would be great

 

 

I just got a set of front 2 back Dg pipes and was wondering where i would start off wit for jetting

i know the stock is 200 so i was thinking like a 230???

 

list of stuff i have

 

Boost bottle

Dg pipes

K@N airfilter (with or whitout air box lid??)

.020 over

shaved head

Billet cooling prop

 

thats about all iv done 2 the motor so far but any help would be awsom

 

 

Thanks

 

 

 

Glenn

[dajogejr]

This is a guideline only...

 

With the air lid on, 250 mains.

With the lid off, 280 mains.

 

We need more info... My estimates are at or near sea level (less than 1000 ft.) and 65 to 90 degree riding temps.

 

Do yourself a favor, ditch that boost bottle. It's taking up room...and that's about it.

[apbt549]

i would leave the air box lid off make sure you have a pro flow intake.and like dajogejr said 280 on the mains is a good place to start. but your riding temp and elevation is also needed.....

[liquedfire]

kool thanks i live in ottawa so id say about 1000 feet above sea level and around 20-35 degres temp thanks again

[dajogejr]

That's 25 to 30 celcius....right?

 

That's 75 to 90 or so....Farenheit...

 

And, ap is right. You can not leave the air box lid off without a proflow adapter...the bottom side of the lid actually secures the airfilter tight against the front of the box and seals it. Without an adapter, the air filter will just bounce around...

[liquedfire]

yup your gight so could i drill some holes in the airboxlid????

[dajogejr]

Yep...sure can, and many do.

You can even remove almost the whole survace, and they make an outerwear to go over it to keep the big stuff out.

 

Figure from 1 to 3 sizes larger on the main, might have to turn in the air screw 1/2 a turn as well.

Edited July 6, 2006 by dajogejr

[liquedfire]

k so i got 270 in it now and the plug is white (lean)

 

so i was wondering how much bigger i need 2 go?????

Edited July 14, 2006 by liquedfire

[dajogejr]

No way we can tell you for sure. 300 would be safer...

 

Now...are you just reading the tips of the plugs, or actually doing a plug chop? A new plug can take a little while before the insulator nose starts to color.

However...by doing a plug chop properly (involves a grinder or hack saw) you should get a light chocolate 2mm ring around the base of the porcelin.

 

Gotta be honest, though...with an airbox and no lid, 300 is usually a little rich. 270 to 280 is the norm....