T-REX cylinders, mikuni carbs, not running right? Help?

[scotties_banshee]

Hello, I just installed a set of T-REX cylinders with the stock stroke and 68mm bore (392cc), which have been drag ported. I also have a set of K&T's 34mm mikuni carbs that they bored to 35.5mm. I am running the pump gas 10cc domes, an i have advanced the timeing 6 degrees. I'm runnin the stock air box with a K&N and no lid, and my elevation is right about sea level. when running it, in every gear it seems to stumble(bog) at about 1/4 to 1/2 throttle, and from 1st gear to 4th it seems to deadn on the top end, but in 5th and 6th it runs pritty good on top.... from 1st to 4th it sonds almost like i'm hitting a rev limiter or something, but its not even reved out?? I imagine the bottom end bog is that the pilot jets need to be smaller or larger??....I just have no idea what the other problem could be??

[4stroker]

wow, 10cc domes are really small! are you sure thats what they are?

 

also, have you done a plug chop? sounds like your real rich

[blanco25]

they use flat top pistons so the domes sizes are different. I believe they go all the way down to 7s or 8s in domes. Get rid of the airbox and check your jetting. If you need to call 951-681-1131 they are the ones that invented the motor he should be able to get you on the right track for jetting. Ask for dan or kyle.

Edited July 2, 2008 by blanco25