Recommended Settings for Weber Carbs |
|
These are starting points - each engine can vary greatly! |
|
|
|
|
|
|
|
|
Engine Size & Cam |
Main Venturi |
Main |
Air |
Idle |
Emulsion Tubes |
Notes |
1.6L See Below |
28 |
110 |
200 |
52 |
F7 |
59 356 1600 Super |
1.6L |
32 |
130 |
200 |
50 |
F7 |
356 1600cc |
1.7L See Below |
28 |
130 |
200 |
55 |
F11 |
on 356 w/C heads |
1.7 912 (1720 BB) |
32 |
125 |
180 |
55 |
F7 |
See Note 1 Below |
1.7 912 (1720 BB) |
32 |
125 |
200 |
50 |
F11 |
See Note 2 Below |
1.7L (1720 BB) |
32 |
135 |
200 |
50 |
F11 |
356 1720cc |
2.0L |
27 |
110 |
185 |
50 |
F2 |
Porsche Factory |
2.0E |
30 |
125 |
180 |
55 |
F26 |
|
2.0S |
32 |
130 |
180 |
55 |
F3 |
|
2.2E |
30 |
125 |
180 |
55 |
F26 |
|
2.2T |
30 |
125 |
180 |
55 |
F26 |
|
2.2S |
32 |
130 |
180 |
55 |
F3 |
|
2.4T |
30 |
130 |
180 |
60 |
F26 |
|
2.4E |
32 |
135 |
180 |
55 |
F26 |
|
2.4S |
32 |
135 |
180 |
60 |
F3 |
|
2.4 CIS T |
30 |
130 |
180 |
55 |
F26,F3 |
|
2.7 CIS |
32 |
135 |
180 |
55 |
F26 |
|
2.7 CIS w/Tall AV's |
34 |
140 |
180 |
60 |
F3 |
|
2.7 E, S |
34 |
145 |
180 |
60 |
F3 |
|
2.7 E, S w/ Tall AV's |
36 |
155 |
175 |
60 |
F3 |
|
|
|
|
|
|
|
|
Note: Tall AV's = Auxilliary Venturi's |
|
|
|
|
|
|
CIS : Indicates CIS Cams |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
You should go through your Carbs and make a note of all the sizes of the different components. |
|
|
|
|
|
|
This will help in the trouble shooting if you have any problems. Often the sizes of jets are only |
|
|
|
|
|
|
finalized by trial & error. Many variables can affect your Webers performance such as fuel available, |
|
|
|
|
|
|
elevation of driving area, engine options and the environment. All must be taken into account when |
|
|
|
|
|
|
trying to determine the proper jets. |
|
|
|
|
|
|
|
|
|
|
|
|
|
The settings were provided by PMO for the 2.0L and larger. |
|
|
|
|
|
|
The Settings for engines smaller than 2.0L are actual inventories provided by 356 owners |
|
|
|
|
|
|
|
|
|
|
|
|
|
Note: 1 |
|
|
|
|
|
|
The bottom end seems to be |
a lot leaner but power appears |
|
|
|
|
|
fairly rich with dull transition |
to 3200rpm, then excellent |
|
|
|
|
|
power from 3300-5500. High |
speed runs with constant |
|
|
|
|
|
rpm's of 5500+ were not as |
powerful as expected. The |
|
|
|
|
|
engine seems to stop breathing |
at 6000rpm and get hot at |
|
|
|
|
|
highway speeds of 75-80. |
|
|
|
|
|
|
Note 2 |
|
|
|
|
|
|
The bottom end seems to be a |
lot leaner, burst power is |
|
|
|
|
|
significantly lower (acc pumps) |
mid-range is a little better |
|
|
|
|
|
and top end is still wanting. |
|
|
|
|
|
|
|
|
|
|
|
|
|