carb
hey cpx went to lebasnon valley(ny) yesterday. first pass dont even count. spun tires so bad i was embarresed. forgot to check air preszsure). 2nd pass was race time. car launched good and ran good but et was only 11.47 and mph was off by about 1-2 mph(lost race by 11 thousandths of a second) i let off just before end because i couldnt see the guy(didnt use my mirror and just looked to side.he caught me and i lost by maybe inches. they let me do a time trial and the car spun alot again(didnt care about that) and when i shifted around 7500 the car had like a bad miss(stutter) or something and it lasted for only a second. i checked the fuel pressure guage(in car) and it read 7 lbs(thats ok). car picked right back up but ran a loust 11.7 (60 ft tome was partially to blame for that. problem is that come and go miss ive been getting since switching carb . i really think it is the 3.5 power valve in there(too low a number), i am putting the vacum guage on there today.still havent seen the power valve that was in old carb, but it definitel the right number power vaLve.. and will try the power valve (the right size if the wrong one has been in there. if it was the right one in there then i will go to straight jets on front anbd rear and step the size up to 84 square.i worry about loading up in the pits, but quick fuel told me i could adjust the idle circuit air abeeds to lean out the idle circuit to help prevent loading in the pits. in my old cargb the power valve in there was definitely the right size. still trying to get the metering blocks off old carb. they are like welded onto the main body. ill keep you posted. any more suggestions ,i am listening thanks art