|View single post by Barthol|
|Posted: 01-24-2015 08:57 am||
I have just finished my 2.2 ltr engine and put it bask in the car.
Comp ratio 9,35:1 ( Meassured )
comp meassured to 150 psi on all 4 cylinders
ignition 10 deg before top
45 mm Dellortoes DHLA
Main jet 155 (132)
air corr jet 175 (220)
Main emulsion tube 7772.11 (7772.10)
Idlejet 50 ( 56)
Idlejet holder 7850.1
pumpjet 50 (35)
starter jet 70 ( 80)
starter jet emulsion tube 7482.1 ( 7482.3)
Chockes 36 mm
The Parts in brackets is extra availebe parts i have in an old 40 mm carbs
I fired up the engine with these parts, and it actually idled quite nice around 600-1000 rpm
i balanced the carbs by first adjusting the air screws to get highest vacum readings on each single cylinder .
Then I matched the two carbs by measuring the weakest barrel on both front and rear carb, by adjusting the screw on the connection link
At the end I balanced the two barrels on the single carbs by opening the airfield screw on the strongest barrel until it matched the weakest barrel.
I idles at 900 rpm but wit a little spitting from one barrel on the rear carb and on one beryl on the front carb
There will also be an occasional explosion in the exhaust.
If I twist the throttle fast it seems to hesitate.
if I twist the throttle less fast it picks up without problems.
I have not driven the car yet, and I expect the Orings between carbs and manifold to seal ( they are new )
My question is do I have the right jetting , or is it way off?
My mixture screws seems to have most influence from closed to 2 turns out
To match the single carb barrels i have to open the air correction screw on the stronger barrel 5-6 turns , and this only brings me close , not completely on the same level.