does anyone on here have any tuning advice and i cant seem to find the balance screw

"if the rearmost carb is drawing less air than the front, turn the BALANCE SCREW in a clockwise direction to correct this"

 

btw this is on a 12a street port with headers full exhaust ignition and so on

 

Best piece of advice is by a Weber tuning book and learn about these carbs. Pretty simple in design but understanding how the thing works is the tricky part. I bought the Dellorto tuning book and so far I tuned 2 Mikuni's and 1 Dellorto to run better than ever, not to mention now I am able to rebuild them. Just bought a Dellorto 48 so I am looking forward to taking it apart and rebuilding it.

 

You probably mean the idle mixture screws. They are the ones witht he spring in them. Best advice is to get a book. However, I have a 45DCOE in a 12A Street Port. All carburetors behave differently. So you will have to start from scratch. What are the setting right now? idle jets #, Main Jet #, Emulsion Tube, Air correctors, chokes, auxiliary Venturies, etc.....

You need to know these in order to get a starting point. Here is what I have in mine:

idle jets=60F9
Emulsion Tube=f11
main 185
Air Corrector=190
Needle & Seat=2.50
Pump Jet=45
Chokes=40
Auxilliary Venturies=4.5
Fuel Presure = 4.0psi
Vacum Advance disconnected
Timing 8-10 degrees advance
idle between 900-1000rpm


with these setup and rB single exaust I am pulling 137 to the wheels and 167 to the flyweel...

To find out about all these you will need a book on how to tune the webe/dellorto carburetors..... well worth the money...

 

^^^ have you tried F9-65 idle jets? Im just wondering why everyone seems to be using them on a stockport, but yet you are having good results with the F9-60's with a streetport. These carbs are VERY simple in design and yet they still are a pain in the *** to tune. (unless you have done it before...)

My current jetting is like this:
idle jets=60F9
Emulsion Tube=f11
main 170
Air Corrector=155
Chokes=36mm
Fuel Presure = 4.0psi

I haven't gotten a good run with the current jetting but I am pretty sure it is getting close... What I have done and I kind of suggest, I started a duotang with notes to myself. I write down jetting combinations and record how they work in the car, I record if the header is glowing or if it smells rich etc etc... It seems to be a pretty good idea, you can go back to previous jetting settings to find your optimial settings. But splurging for a wideband will also make tuning a carb extremely easy... I wish I had one...