Syncing webers Options

[pitr256]

Hey all,

Got my 914 running to the point after sitting for 15 years where I can actually drive around the block. Trying to synchronize the webers and noticed that when I put the unisync over cylinder #1, the engine's rpms rise to over 2000. Noticed the same on cylinder #6 but not as pronounced. Opening up the unisync all the way still causes the reduced air to the intake to cause the rpms to rise.

Is this normal?

I have the idle and air mixture screws at the default settings and would try adjusting but it developed an oil leak under the oil filter somewhere so have to fix that first before tuning more. This car has been 2 steps forward, 1 step back all summer. Almost there though.

Thanks for the insights.

Peter

[mskala]

Do a search at the 911 pelican parts technical bbs for the info on this.
Paul Abbott is the main weber guru over there. In order to tune the
webers, you have to do things in a particular order and also have the
engine in a known state.

IIRC, first thing of all is setting valve clearances properly.
Then ignition timing.
Then with the 2 banks disconnected from each other, equalize air
flow of the 3 cyl of one bank, then equalize the 3 cyl of the other bank.
Then hook up the linkage again and get it adjusted to both sides are equal.
Then at slightly high idle set all the mixture screws (easier said than done).
Then set idle stop so that the throttle plates are over the lowest
progression hole (which is not able to be seen unless carbs are off car).

Easy (IMG:style_emoticons/default/biggrin.gif)