question about the dp
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
The heat to the intake provides a stable environment for the A/F mix regardless of what the outside temps may be. Carbs "like" a stable environment to operate in otherwise the performance might be erratic due to wide variations in operating conditions.
Elder User
Joined: Jul 2004
Posts: 911
Likes: 2
From: Northern Virginia, USA
Excellent point. Use this advice.
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
I'm in Texas and the heating plate makes a huge difference. It's pointless to even tune the truck until it's run for 10-20 minutes and completely warmed up, there's that much difference.
Maybe having the carb reversed works better. Try it both ways once you get heat to the intake. The secondaries will probably never open all the way, so maybe they work better on the smaller, shorter path to the engine. Just cause it ain't normal don't mean it's wrong.
Maybe having the carb reversed works better. Try it both ways once you get heat to the intake. The secondaries will probably never open all the way, so maybe they work better on the smaller, shorter path to the engine. Just cause it ain't normal don't mean it's wrong.
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Simply bypass the heater core and go directly to the plate for the summer and then reroute to the core for winter use.
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
You are simply putting a splice in the heater hose...cut the hose, put one end on one of the pipes and the other end on the other pipe and you are good to go. No need to change anything between summer and winter. The stable environment in the intake is desirable regardless of the season.
Senior User
Joined: Apr 2002
Posts: 113
Likes: 0
From: Clarksville, TN
But in the summer if you don't cut off the water flow on an early truck (64) you'll get heat coming from the heater. I guess I can rig up a heater bypass by using three manual cut off valves.
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
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