hercalmighty

Im running 23cc domes with +6 timing and Im right there for pump gas. I ride mostly sea level up to 1500'.

Might be 64.50mm pistons.

Is there any other numbers? Can you maybe snap a pic of it and post it?

No problem man. I will have those out on tuesday. Thanks for quick payment.

Honestly your best bet would be to put them on ebay. See if anyone on there wants them. Most everybody on here is either well beyond stock pipes or looking to get rid of them.

Hey. I sent you a couple PMs. Im very interested.

Pm sent

Do you have any pictures?

Alright man. Here is how the vents are suppose to go: The two vents that are on top that point up get a tube each and they loop over the carb and back down the opposite side. The two vents on the sides that point out each get a tube that just goes straight down. Then there is on vent off the bowl that gets a tube that goes straight down. Does that make sense to you?

OEM is cast. What size are you looking at? .50mm or 0.050" over stock?

Ok cool. Seems like 33PWKs or 34PJs are the norm for a 4mil. Just thought maybe try something different.

Thanks Dave. I know that Im going to lose some bottom when I get bigger carbs and if I was really worried about a ton of bottom I would have built a totally different quad. So I know that its going to be more mid to top. I want more topend because I know this think has more in it. So which one of these two carbs will fit me better?

Im looking for some advice. I have a 4mil dune port motor with CPIs and 28 PWKs. Im looking to get a bigger carb setup and Im undecided on what size to get. As of right now Im looking at either a set of 33 PWKs or a set of 35 A/S. I do alot of trail riding and MX and I want to make sure I dont over carb the motor this kind of riding. I was looking at the A/S since I do alot of jumping and riding whoops. So any input would be great. I would really like to hear from guys who are using the A/S and what they think of them.

The A/S are suppose to be better at helping with bogging after jumps and whoops. The extra vents are to help with that. Also I think the A/S are suppose to be a little better throttle response but not 100% sure on that.

Actually I think I confussed my self on that one.

Yeah sorry man. I think we are both saying the same thing just different ways. As far as the higher elevations its just like the difference between hot and cold days. Since the air is thinner you need less gas to satisfy the motor. Im guessing since the compression is lower at higher levels that the it doesnt build as much heat from the motor compressing the air. That means that you need less octane. You get what Im saying?

Dude its right there. Its very simple to understand. the point I was making is that you cant go by cranking compression. You can have two motor with the same static compression but different cranking compressions. You go by static compression over cranking. As far as not understanding, most people understand that when saying COMPRESSION its cranking compression we are talking about. When your talking static compression that COMPRESSION RATIO or 14:1. Sorry for not being totally specific with what I said. Most people know what Im saying.

Ok like I said SAFE. 20cc domes are safe. You should not have a problem with them running pump gas. If you live higher up then you can running smaller domes. As far as what I said about drag porting being lower compression its true. Because the exhaust port and intake ports will over lap each other with extreme porting your compression will drop. But the drag motor and stock motor with the same size domes will need the same fuel even though the compression numbers will be different. Dude, do yourself a favor and start reading man. Maybe you'll actually learn something.

Did you read what I wrote? I said as a base to be safe 20cc was a good starting point. I cant run 20cc domes here at sea level but someone higher up can. At 2500' yes you can run a smaller dome. This is why I said, YOU HAVE TO DO YOUR RESEARCH!!!!! Also you cant just go by compression. A drag ported motor is going to have lower compression then a stock motor with the same size domes. Also he didnt ask if it would hurt, he asked if it would help. To answer that question like I did, No it will not help unless you motor NEEDS the octane. Higher octane fuel slows down the burn to reduce detonation. So really if your motor doesnt need the higher octane its almost like running too rich. The motor doesnt burn all the fuel so its not running efficiently. So when a motor isnt running efficiently its not producing as much power as it can.

Im running a 4mil dune port with CPIs. I have 45 pilot, N68A needle middle clip, 155 mains. Im running an open airbox with a foam filter. If its running crappy 0-1/4 throttle its probably the pilot jet. Like said make sure that the carbs are perfectly synched. The 28PWKs and OKO 30s are real touchy.

It depends on what size domes you put in. You should be safe with a high quality 93 octane up to a 20cc dome. But depending on alot of factors that will be different. Best thing to do is do some research on it. Someone at 3500' above sea level can run a different size dome with pump gas then someone at sea level.

What mods are done to the bike? What needle are you running?

If your are running stock head and stock timing no reason to run race gas. It is just a waste of money. You dont need to start running race gas until you start really bumping up your compression and timing.

Are you sure? I thought A/S had 4 vents and the little fins on the filter side of the carb.

Im thinking you could find the same thing but newer for the same price. I wouldnt say 55 hours on a rebuild is "fresh". If you can see that the swinger has been welded badly what else was skimped on in maintaining it. Just some of my thoughts