Weber ?

[rcf925]

I'm in the process of rebuilding a pair of Bologna Weber DCOE15 & 16   I need a starting point to set floats, I've read 12,13 or 14mm  What is the consensus around here. Also since one is a 15 the other a 16 which one goes to the front 2 cylinders. I guess the old BMW TI race cars used this set up

 

[williamggruff]

15 in the front, 16 in the rear. 

 

Ideally, you set the float level by running the car, turning it off abruptly, pulling an emulsion tube from each carb, and measuring down from the carb top to the fuel level. Should be 22.5mm (?) if memory serves. 

[Hans]

8.5 mm comes to mind for brass floats. Plenty of guidance on FAQ. Make sure the floats aren't leaking.

[Hans]

8 minutes ago, williamggruff said:

15 in the front, 16 in the rear. 

 

Ideally, you set the float level by running the car, turning it off abruptly, pulling an emulsion tube from each carb, and measuring down from the carb top to the fuel level. Should be 22.5mm (?) if memory serves. 

I think it's more like 25 mm, but YMMV.

[Hans]

Although I've seen 29 mm for another car application.I think I'm running 27 with Spanish foam floats. You have to be fast to get in there right after shutting off motor. But mostly I recall seeing 25 mm.

[rcf925]

33 minutes ago, Hans said:

8.5 mm comes to mind for brass floats. Plenty of guidance on FAQ. Make sure the floats aren't leaking.

 

So just to get started before I put them in car 8.5mm would be in the ball park

[Goner]

I have a set of these 15/16's. Are one of your velocity stacks shorter then the rest? On the set that I have 1 of the stacks is about an inch shorter. 

[Hans]

8.5 to start. With gasket. Try to get reading off bowl, not the seam.

[rcf925]

12 hours ago, Goner said:

I have a set of these 15/16's. Are one of your velocity stacks shorter then the rest? On the set that I have 1 of the stacks is about an inch shorter. 

 

I just measured all my stacks,  All the same length 3-3/8" on the short side as they all have a slight maybe 10 to 15 degree angle 

4 hours ago, Hans said:

8.5 to start. With gasket. Try to get reading off bowl, not the seam.

 

Thanks for the help

 

[Goner]

12 minutes ago, rcf925 said:

 

I just measured all my stacks,  All the same length 3-3/8" on the short side as they all have a slight maybe 10 to 15 degree angle 

 

Thanks for the help

 

 

Thanks for taking a look. Here is a pic of the stacks I have. 

[rcf925]

24 minutes ago, Goner said:

 

Thanks for taking a look. Here is a pic of the stacks I have. 

 

 

 

You can kind see my stacks in the plastic bag in pic