dome size

[Tf705]

i have a stock stroke drag port done by herr. He told me to run 18cc domes and plus 6 timeing. i have a quality snap on gauge and i know its accurate. im only getting 140lbs. im in michigan so im pretty sure im sea level or a few hundred higher. i hear some you guys with drag ports with 170 to 180 psi. should i be higher or what?

[johnny boy]

Hate to hijack your tread but I have his aggresive dune port on 19 domes(stock stoke) and all i can get is 154pds.Ive tried a snap-on,matco,and a sears compression tester.All were pretty close (1-2 deg off).I'm at 414ft elevation above sea level.Kevin told me to run 20 domes on pump gas and I locked her first 20 mins out.Went to 19 and run straight 110 sunoco now.also have +5 timing.Have probaly 20-25hrs on her now.No problems what so ever.

[No Limit Powersports]

Have you checked squish? And how are you doing the test? Make sure that you are opening the throttle wide open and giving 10-15 good hard fast kicks.

[NickisGod]

im on your boat. im only 500ft above sea level 18cc domes on a 4mill cub and only get 145......

[sleeper06]

Something aint rite im at sea level 4mil cub 20cc domes 180lbs of comp

[tundish2800]

Where are you in michigan? I have 175 with 17cc domes

[AKheathen]

yah, i have woo-hoo with 20's near sea level and in the mountains.....

[Tf705]

i live in lower michigan. ive done a leak down test and it passed easily. i have done a squish test and it was where kevin should it have been, forgot what it was though. sorry to sound like a idiot but have not touched this thing in months.