so heres a video of my problem


http://www.youtube.com/watch?v=qBw2s3RjsD8

theres a stall 2 1500-2000 rpms then it sounds ported after that i cant get past 4.5k

but when i hit the secondaries boom its a rocket

carb rebuilt no vac leaks i can find
fuel mixture changes nothing
timing does nothing low fuel pressure or insufficent plugs i really need help its been driving me nuts the past 2 weeks the car is undriveable

 

Did this start after the carb rebuild?

Any other changes?

Or

Just out of the blue.

 

swapped motors rebuilt carb put motor in fixed vac leaks now i have it running i have this

 

why did u have to swap engines? it sounds like it's running on one rotor. double check the coils, plugs, and wires. if u pull the leading wires one at a time while it's running u'll find out which rotor isn't firing.

 

But since the car is a rocket once he opens the secondaries it kinda throws a wrench into that theory...

I would pull the fuel jets and make sure you don't have a clogged jet.


.

 

+1 on going through the carb again.

 

ok narrowed it down primary jet not squirting on front rotor
cleaned everything still there any ideas

 

ha carb primary and secondary on rear rotor side the little jet thing in the bottom of the bowl where mixed up

 

Nice find Michael, let's hear a video of the fix!