Got me a PWK 33 Air Striker!!!

wwholden

Member
Nov 17, 2011
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Dayton, Ohio
Well I got my hands on a 33mm air striker and a hand full of jets. Right now Im trying the boiling water method of stretching the carb boot out to except the bigger carb. Its working but it didn't go in very far. Im going to let it sit over night then reheat it and try again. Anyway based on my mods what ball park jetting do you guys think I should try first.
 
Airstryker carb or not, with your mods, I'd say start with a 45 pilot and 148 main, and tune from there. A CEL or DGH needle seems to run the best on a Blaster engine.
 
Well the carb has four vent tubes, doesn't that make it a striker? I believe it to be a 33 because I have a 35 striker on my drag build. And this one is slightly smaller. Plus I was able to squeeze it in a stoke boot. And thought that was only possible up to a 34mm. It was a very tight fit for sue. And thanks Braaaptor for the jetting reference.
 
holden look at this link the air stryker only comes in 35mm and 38mm. notice the long cut out "throat" on the intake side of the air strykers. normal PWK's dont have this making them non-air strykers. i run a 33pwk on my FLOTEK trail ported stock cylinder w/ pod filter and i run a 155 main and a 52 pilot and the CEL needle works great.


Racing Carburetor Motorcycle
 
Ok its a 36mm quad vent PWK lol. I guess thats better than a 33 so thats cool. What really makes me happy is I thought my drag bikes carb was a 35 air striker but turns out to be a 38mm air striker. So this bikes going to scream when I get my port job done!!!!!!!
 
Will this 36mm be too big for my engine? I trail with this bike but I ride either no throttle or WOT through the trails. No in between.
 
The bore detemines the size of the carb I believe.

If you have a 35mm carb, it will measure approx 38mm on the outside dia.
 
I'm running a PWK36 on my big bore stroker setup. I'm not sure if that carb is too big or not but the carb and engine will tell you for certain.

The tale tell sign that a carb is too large is a dead spot just off idle that you cannot tune out....

Larger bore carburetor on a small flow engine (stock bore stock stroke blaster for instance) means that the air isn't moving through the throat as fast. This results in a weak "vacuum signal" being generated by the slide acting on the mainjet and needle. When the throttle is opened, the air doesn't begin to suck gasoline into the throat until the engine has sped up some. You get a brief moment of lean followed by proper jetting. Basically, nothing you can do to it will solve that problem UNLESS you decrease the bore size or increase the rate of air consumption (heavy porting, pipe, stroker crank, etc etc)