What kind of carb would be the best to get for my quadracer. What kind of performance increases should I expect from a new carb? What size should I get? Do they come with everything I need (needle, jets, ect.)? Can I use the same throttle cable as my stock carb? Any addition info would be great.

Also i'm looking for a pair of used aftermarket shocks or a really good deal on new ones, I need lower ball joints if anyone has some laying around.


thanks alot,


chuck

 

Come on... someone has to have a aftermaket carb on there quadracer.

 

I myself don't have an aftermarket carb on mine, but I have read and heard that any oversized carb will increase performance a lot. I have a Duncan Racing Catalog and they have 3 or 4 carb selections for the LT250R. They have the carbs set up for different purposes, meaning one can increase low-end and another top-end performance. There are other places that offer other selections like FTZRacing.com

Hope this helps

 

If all you have done to your engine is a pipe then you probally dont need a carb, get the engine ported and some head work done and a carb will really help.

 

i might get it ported in the future sometime but it already has 150 - 155 lbs of compression. I think my stock carb might need new floats and I would rather get a new one because i have heard they make a big differance. I was thinking a 35 or 38 mm kehin airstriker


chuck

 

I put a pwk 39mm on my 91 with a paul turner pipe system and the prymid rad valves. It brought the quad alive. The only comment is do to the size it was a pain in the a$$ to put the boots over the carb. (intake and air filter boots). I would reccomend the pwk 36 or the 38 if you plan on adding an aftermarket rad valve and pipe system. If not use the 36mm. It's best to buy a new cable when you do this, cause it sucks if the old one breaks and you have to put a new one on at a later time.

 

What is the differance between a pwk and an airstriker?


chuck

 

The air striker (PJ) has the idler screw built into the choke, and it has a different style plugger than the pwk. the Pj is known for not being to friendly when trying to set idling. Most people that use the pj are mx racer do to the fact they do care if the machine idles or not. I like the design and performance of the pwk.

I think the pj was also built for dirtbikes more than quads, not for sure on that one though.

 

Hey chuck1221,

I'm in the exact same situation you are about buying a carb. But can't decide which to get. I was also looking at the 35 and 38 Keihin Air Stryker. My Mikuni 34mm tends to flood if it sits with the petcock on and surges sometimes off a high rev. Plus it kinda chugs on the lowend. Since I can't find a rebuild kit for it, I decided to just get a new Keihin carb. I have a '92 LT250R that's .020 over, Boysen RAD valve, DG pipe and silencer, and a K&N air filter. I also have 150lbs of compression in the top end. I'm not so concerned about power, as it already seems to have plenty for me, but reliability and smooth running. I also don't want a carb that devours gas. Does anyone know if a 38mm carb gets noticably worse gas mileage?

I've been referring to this thread to figure out which one to buy, maybe it'll help you:

http://forums.atvconnection.com/mess...;keyword1=carb

So what do you fellow LT250R owners think? Am I better off with a 35, 36, or 38mm carb?

Thanks!!

!*mr.bones!*

 

Go with the pwk 35mm. They make to models of this carb. Standard and Quadvents/Air striker. Here is Keihins website Keihin Carbs

The reason I say go with the 35mm is becuase of the dimensions. They are a little smaller making it easier to install on the factory boots.

I have a pwk 39mm and didn't notice much of a difference in the amount of fuel it uses. Remember I race harescrambles and a tank would get me about 1 hour and 45 minutes. When I play rode I could get about 4 hours out of a tank.