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40DCOE-151 Vacuum takeoff location


sam1904

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3 hours ago, Stevenc22 said:

151's don't have a vacuum take off. You can remove the choke housing with the carb in place and seal it off with come block off plates.

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I was recently told by Keith Frank on the Weber Side Draft sidedraft@vintagetechnologygarage.groups.io group that the two screws adjacent to the cold start block off plate in your photo are indeed vacuum takeoffs. I just received a Carbtune that comes with the 4 ports that thread into these 5mm holes to connect to the Carbtune. I was surprised to discover the vacuum ports existed as I have read nearly everywhere "DCOEs don't have vacuum takeoff ports". Apparently (someone please correct me if I'm wrong) if your carbs have the air flow mix screws they will also have these vacuum takeoff ports. Some people have used them as a takeoff for vacuum distributor advance.

 

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2 hours ago, sam1904 said:

 

 

Son of Marty - hopefully I see you at the Vintage because I owe you a beer. Looks to have closed up a gap, will start it up tomorrow (daughters sleeping) and update but the interference was almost all on the #4 side so it makes sense. 

 

Halboyles - you can tag along also, I already owe you one for the linkage help

?

 

 

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Well I do work for beer, but any advice I have comes from F*king things up myself and I'm glad to share for free I've been at this for a while and have screwed up just about everything. Just remember as you get these tuned in it's almost never the carb but something you've done to it that's wrong 

  • Haha 1

If everybody in the room is thinking the same thing, then someone is not thinking.

 

George S Patton 

Planning the Normandy Break out 1944

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