Flathead Dual Intake Offset
Phantom of the Phorum
Joined: Jan 2011
Posts: 5,472
Likes: 1,696
From: Kentucky
Are you running the carbs synchronized, or are they progressive?
I ran mine synchronized, and had a problem with them running a little rich until I changed the power valves. I used a couple of 3.5s, with the original jets.
The reason I say "ran" is it's currently apart for a frame-off rebuild. I hope to have the engine mounted back on the frame in a week or two.
I ran mine synchronized, and had a problem with them running a little rich until I changed the power valves. I used a couple of 3.5s, with the original jets.
The reason I say "ran" is it's currently apart for a frame-off rebuild. I hope to have the engine mounted back on the frame in a week or two.
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Senior User
Joined: Jul 2006
Posts: 391
Likes: 0
From: Peterborough, Ontario
Mine too are synchronized together but I have not had it down the road. It has only been revving up in the garage, would the power valves be operating at this point? Seems to start and idle fine and does seem better now I have balanced them and adjusted the air screws, noticed today that one air screw is loose in the threads, could be worn threads in the body.
I can never remember how to post pictures with fiddling around, need to have a look at the instructions.
I can never remember how to post pictures with fiddling around, need to have a look at the instructions.
Junior User
Joined: Nov 2010
Posts: 86
Likes: 0
From: Terre Haute IN
I got my hands on a NOS mallory yc distributor about 10 years ago. MSD makes a unit that will work.
Fleet Owner
Joined: Jul 2004
Posts: 27,299
Likes: 1,059
From: NM
Mine too are synchronized together but I have not had it down the road. It has only been revving up in the garage, would the power valves be operating at this point? Seems to start and idle fine and does seem better now I have balanced them and adjusted the air screws, noticed today that one air screw is loose in the threads, could be worn threads in the body.
I can never remember how to post pictures with fiddling around, need to have a look at the instructions.
I can never remember how to post pictures with fiddling around, need to have a look at the instructions.
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