hercalmighty

Hey Andy, what is the difference between these and cubs? How do the porting maps compare? Any word on pricing yet?

Thats probably all it is. If you only lost 1psi over 6min your fine

Check and make sure its not your tester. When I first put mine together I had a little pin hole that I had to seal up.

Elka, take some pics of the head. That might help guys figure out what it is.

I loved my PWK 28s on a similar setup. I thought the throttle response was much better and more topend. They will work good for some porting also. I did run them on my 4mil dune port for awhile and worked good for that too.

I had an air leak around my intakes and gaskets also. I just used a very thin line of Yamabond around everything and have had no problems

I had a similar setup. 4mil dune port, 20cc cut domes, CPIs, VF2, PWK 28s, airbox with twin air filter no lid. I was runnning 155 mains and 45 pilots at 500'. The jets I mentioned are maybe a little rich but better rich then lean.

158 main and 48 pilot

What's your airfilter setup?

I only sugested the CDL or CCL needle because it sounds like his taper and diameter is fine. He just needs a shorter needle

You want a shorter needle so get a CDL or a CCL. A CDL is one size shorter and a CCL is two sizes shorter.

Do you have a compression tester? If so do a compression test. If not pop the head off real quick and check the dome size to make sure its a 19cc dome. If it is, yeah, throw some 93 in it and run it.

I don't know why everyone is saying 20cc domes. At higher elevations you can run smaller domes. I had no problem at all running 20cc domes on 93 octane and I live at sea level. I know a lot of guys who live at about 1500' run 19cc domes on premium. So at 3500' you should have no problem at all running 19cc domes on 92-93 octane

Hey Tony. It depends on where it feels fat. If it feels fat going from pilot to needle (right at 1/4 throttle to 1/3 throttle). At 1/2 throttle. Or going from needle to main (right at 2/3 throttle to 3/4 throttle). Figuring that out will decide what you have to lean out taper, length, or diameter.

Hey Elka, at your elevation you should be fime with 19cc domes. Just pop the head off and make sure they are 19cc.

Depends on if you have a stock stroke or a 4mil. Did you happen to do a compression test on it? Also, what octane gas can you get around you?

What's your elevation? What are you running for air filters? What is your oil ratio? Did you make sure everything is working right in the carbs?

Did you do a leak down test? You shouldn't be jetted that rich.

Hey guys. Looking to sell my bike. Looking for $2500 obo. Here is the craigslist ad. If you guys want any more info or have any questions you can pm me here or contact me through the CL ad. http://philadelphia.craigslist.org/mcy/1893563693.html

I think what swinger you run depends on your riding area. I ride on the east coast with lots of tight trails and tight motocross tracks. Also a lot of the ground I ride on is either grass or hard packed where my biggest issue is traction. I have a 4mil dune port and I just run my stocker. I get decent traction, good turning, and really don't have too many issues with it wheeling bad. If I was going to be doing drags or hillclimbs I would change my tires and my swinger. But since 90% of my riding is tight trails and MX, I stick to my stocker. I think the best advise is get the thing together and see what its doing. If you. Can't get traction for shit and you have good tires change to a -1, if you just can't keep the front end down go to an extended swing arm.

Call Mull (blowit). I think he said 85 for a rechamber job

What size do you have now?

You have a rechambered stock head right? Check and make sure its not warped, check your mating surfaces both on the head and top of the cylinders, check your squish and compression.

Couple questions, What kind of riding do you do? How much are you looking to spend? What elevation are you at so we can recommend a good dome/reworked head for you? Do you want to run pump or race fuel?

Slo, from the couple builders I have talked to and what I have read a good safe squish should be between .040 and .045. Under .038 you really need to know that all your other parts are in damn good shape if you expect your RPMs to be on the higher side. You really can't measure the true amount of streth in all your parts at high rpms. So to keep safe you should try to stay above .040. So if you have a stock head and you want more compression then what shaving down to .040 can get you, you should have the head rechambered. If your motor is stock or a very mild port meant for more of a low to mild range then yeah you could maybe go a little tighter with for squish. Here is my run down: Stock motor looking for a compression bump, shave the head down to .040 squish Stock motor looking to run race fuel, rechamber or cool head Ported motor looking to run either pump or race fuel, rechambered or cool head (I think if your spending the money for a port job at least have the builder rechamber your head to his specs) If you have an idea your going to possible be changing setups a few time go cool head. It seems that the cooling between the two is pretty close with some saying the cool head helps and some saying it doesn't. The hp difference between cool head domes and a rechambered head are about the same. So I think a lot of it comes down to, are you going to stick with one setup or do you have a feeling your going to be doing some upgrades and changes that will require head changes.