rxseven07

hey guys, i was wondering if there was any websites or anybody knows how to fine tune the weber on a 13b 6port.. like how many times to turn the little screws on the top... or where to set the fuel press regulator, its on 1psi right now, the reason why i ask this is because my car sometimes bucks pretty bad, mainly when cold or in low rpms, and also it wants to die or it idles really low when i put it in reverse and try to back up a hill. any imput would help alot

capri93

I'm not an expert but I think your fuel pressure should be set a bit higher. just my $.02

Siraniko

iTrader: (13)

this may help ya.

http://www.piercemanifolds.com/tech_spec.htm

Hyper4mance2k

iTrader: (40)

fuel pressure 3-5 psi
idel jets 65f9
accellerator jets 45
mail jets 185
emultion-tube f-11
choke 38mm
this set up will give you perfect daily drive ability and the ability to run mid to high 14's in the quarter mile at least thats what it did for me...

680RWHP12A

yup, right on!!!

680RWHP12A

and 21/2 turns out on the two little screws... idle mixture!!

Hyper4mance2k

iTrader: (40)

yea what he said

rob81gsl

iTrader: (3)

i'm running 180 main jets and basiclly everything else the same as posted above on my 4 port 13b and i'm running really rich. it doesn't buck or anything, just my air/fuel gauge alawys shows extremely fat and how can i forget the lovely gas fumes....yea for rotaries

680RWHP12A

well if your running rich, go down to a 165 on the main jet and see how that runs..... what is the altitude where your at?