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Posted

does any1 kno where i would get a jetting kit for my 05 yamaha dt125? preferably in ireland, but shipping from england should'nt be 2 bad.. cheers men

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Posted

sorry may have been the wrong phrase, i want to move up a jet size. i dont want to drill my own out, my bad haha

Jets are easy come by, I use motocarb they will post it to you.

What size is it now?

Posted

standard, 210 i assume? to be honest i dont understand how jet sizes are measured. iv taken de cat out of the exhaust so i reckon jets would be a good next move.. ye no doubt id get them in the bike shop here, but id fairly pay for them 2, i just wanna get a few prices on the internet before i hand over mad money yeno urself..

Posted

First thing is to check if you are jetted ok now, the colour of the plug gives a rough idea, ideal is mid brown

http://www.dansmc.com/sparkplugs1.htm

If you want to be more specific e.g. if you think it is out at full throttle , then a plug chop will tell you , but it costs you a couple of new plugs

No point re-jetting just for the sake of it , http://www.kawasakimotorcycle.org/forum/kawasaki-motocross-offroad/17227-spankeys-jetting-guide-info-2-stroke-riders-must-have.html

http://www.thumpertalk.com/forum/showthread.php?t=538197

Bob

Posted

its hard t tell the bike goes tru plugs like a mad yoke, dis last ones held up pretty well tho so il check it out 2moro.. iv the exhaust gutted, i flowed the inlet ports and iv a knn style filter to go on aswell, surely a bigger main would be a gd step now no??

Posted

I wouldnt recommend a pod syle filter if thats what you are considering.

More trouble than they're worth getting it set up right. ;)

+1

DTR's do not like K&N's. A pipercross or similar original foam style one works better IME.

And what do you mean by "flowed the inlet" ?

Posted

idn men its all trial n error for me :) just took the dirty blunt edges off n smoothened dem down as best i could

Inlet ports on 2-strokes are supposed to have a fine dimpled surface, much like a golf ball, which traps a thin layer or air on the surface which allows the air/fuel mixture to pass over it alot faster than it would with a smooth polished surface.

Posted

Inlet ports on 2-strokes are supposed to have a fine dimpled surface, much like a golf ball, which traps a thin layer or air on the surface which allows the air/fuel mixture to pass over it alot faster than it would with a smooth polished surface.

Dead Right

It is very tempting to mess with porting and exhausts , unless you are a skilled tuner you are more likely to lose power.

Your efforts are best kept to keeping the bike in good order.

Once you have done the standard de-restricting of a dt125 ,the next step is probably a pukka exhaust system like a DEP .

After that I reckon there is no substitute for a bigger bike !

Posted

no iv taken the blunt face off the inlet n smoothened it into a point, its still as bumpy as it was. its definetly better :) im 18 now in a week or 2, time for de bigger bike... in 2 years. thanks to the restrictions in ireland.

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