help . carb question ??

[royalt67]

Sounds like you decided on the PWK28? Hell of a carb and here is a nice deal you might be interested in. 2007 YZ85 CARBURETOR KEIHIN 28MM PWK : eBay Motors (item 170553919296 end time Oct-24-10 07:17:39 PDT) Will prob sell for about 60. The nice thing about a PWK off a dirtbike like this one is the vertical vent lines. Also the new PWK I bought from an aftermarket source last year had the idle speed screw on the right side of the carb, kind of a pain. Likely you would have to rejet, but you will have to do that with a new one anyway. Add a cable and you are set.

 

[fxchris]

damn so i have to rejet the carb when i buy it new . i cant just slap it on and ride ?

 

[Whitty21]

nope, you will definately need to rejet, jetting is a biotch at first, soon you come to realize it is a necessity if u plan on keeping your engine on one piece

 

[brandoz28]

you have to jet it for your application and then you have to rejet every time you change airflow into or out of the engine

 

[fxchris]

so what jet do i need with an all stock motor ? and does it come with the jet or do i gotta purchase it ?

 

[Surfrjag]

your going to have to do a plug chop to get it just right but look around on one of the stickies it says what most people are running

 

[fxchris]

il wait till someone comes in , cuz i have no clue which one i need , n whats a plug chop?

 

[fxchris]

can someone tell me if i can run the DG PWK 28 mm Keihin carb without changing jets ? if so whats jets do i need ? i wanna order them now but dont know what i need .

 

[yzrider]

can someone tell me if i can run the DG PWK 28 mm Keihin carb without changing jets ? if so whats jets do i need ? i wanna order them now but dont know what i need .

you mucst rejet, the size depends on the engine mods

 

[fxchris]

okk my blaster is completely stock . what jets do i run ?

 

[brandoz28]

list out your mods and we can get you in the neighborhood of where to start on your jetting

 

[brandoz28]

i'd start with a 140 main and 48 pilot, which may be what's in it if you're lucky, yoou always have to check though


there are great stickies on jetting and plug chops

 

[fxchris]

can u explain to me how the jets work? how do i kno what size they r ?

 

[brandoz28]

the jets will have the size stamped on them. basically they're a flow restriction. bigger ones let more fuel in, smaller ones allow less fuel to pass

 

[super noober]

can u explain to me how the jets work? how do i kno what size they r ?

the different size jets have different size holes in them that allow more or less fuel in. bigger jet has a bigger hole wich lets more fuel in. the numbers are stamped right on them. the act of changing jets is simple as can be. my 9yr old daughter can do it. I:I

 

[fxchris]

ok got it , thanks so much noober . ur the only one that explains to me everything . lol . so which size would u recommend ?

 

[super noober]

ok got it , thanks so much noober . ur the only one that explains to me everything . lol . so which size would u recommend ?

brando is very knowlegeable i like his 140 recomendation I:I but liek they said you need to learn how to do plug chops to read your plug. it is a pain in the ass at first but you will get the hang of it.

 

[fxchris]

yea i get u . and whats a plug chop?

 

[brandoz28]

take some time to do some reading
http://www.blasterforum.com/engine-...ything-you-need-know-most-useful-posts-28478/

if you give a man a fish, you feed him for a day, teach a man to fish, you feed him for a lifetime

 

[fxchris]

yeaa il read up . n that saying is very true