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 Post subject: My Weber DCOE Install
PostPosted: Mon Jun 04, 2018 5:53 pm 
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Joined: Sat Oct 19, 2002 4:48 pm
Posts: 193
Location: Apex, NC
Car Model: 1965 2 Dr Sedan, Wagon, Barracuda and Convertible
Hey. I'm finally getting my triple DCOE 40 setup running. I've had this stuff for almost 20 years. I've had to figure out a bunch of details and I'm sure I'll find a bunch more before I've got it right.

1. I did have to get a local muffler shop to cut and reroute the No 6 Header tube so it cleared the WEBERS. You'd think that a Clifford manifold would clear Clifford headers. It clears now but not by much. We'll see how much of a heat problem it is.
a. I also had to grind on the intake to get the "Cold Start Device" to clear. I'll probably remove and block those off eventually.

2. I've goofed around with a bunch of linkage ideas. I think what I have now will work. It's a triple Weber kit from Pierce Manifolds. There wasn't enough clearance for the lower pivot nut to clear the carb body. I had 2 choices. Grind off the interfering mounting point on the Weber or get throttle arms with the ball attached. I decided to go with the arms with the ball attached. (Not part of the original kit)

3. I thought about keeping the solid linkage and somehow rigging up a push rod from the transmission kick-down to the throttle rod. Too much trouble and too far out on the end of a non supported rod for me. Decided to change over to a later A-body hanging pedal and cable that comes up under the carbs and attaches beside the middle Weber. Much neater but pretty close to the headers. We'll see. I might need to make a heat shield.

4. Not sure what to do about the Distributor Vacuum. Probably just cap it and live without it.

5. PCV Valve. That's what I'm thinking about now. I have a Vacuum port on the 6th intake runner. I wonder if would work to plumb the PCV valve through a catch can and into the no.6 runner? Anyone else out there thinking about this? It's a 1965 so I don't think it has to have a PCV valve. Some did, some didn't. The breather is also the type that attached to the air cleaner. Not practical on the Webers.

6. For now I'm using the stock fuel pump. I have a whole setup with a Carter Electric with constant low pressure. Recommend for the Weber DCOE. They don't like much pressure. Maybe 4psi from what I've read. Haven't installed it yet. Hopefully I'll be on the car for the Reunion.

You guys rock. Thanks for all the advice over the years. Hope to see you at a race soon. Fingers crossed on the Webers. If not I'll just stick the Offy and AFB back on.

_________________
1965 Valiant 200 /6 2dr Sedan.
1965 Valiant 200 V8 4dr Wagon
1965 Barracuda /6
1965 Valiant Convertible V8


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PostPosted: Mon Jun 04, 2018 7:00 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
PCV should really go to all. Is there a balance tube for the webers?


You could try manifold vacuum for the distributor.

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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PostPosted: Mon Jun 04, 2018 7:40 pm 
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Board Sponsor

Joined: Sat Oct 19, 2002 4:48 pm
Posts: 193
Location: Apex, NC
Car Model: 1965 2 Dr Sedan, Wagon, Barracuda and Convertible
Nope No balance tube unless I make one. One barrel One cylinder


Same with Vacuum advance.

_________________
1965 Valiant 200 /6 2dr Sedan.
1965 Valiant 200 V8 4dr Wagon
1965 Barracuda /6
1965 Valiant Convertible V8


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PostPosted: Mon Jun 04, 2018 7:47 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
PCV on one cylinder would throw that cylinders AF ratio out of balance.

Vacuum on one cylinder would have it bouncing.


That leaves you with a road-draft tube and no vacuum advance (unless somebody comes up with another idea)

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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PostPosted: Tue Jun 05, 2018 9:24 am 
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Board Sponsor

Joined: Sat Oct 19, 2002 4:48 pm
Posts: 193
Location: Apex, NC
Car Model: 1965 2 Dr Sedan, Wagon, Barracuda and Convertible
What do guys with forced induction do? You don't want pressure blowing INTO the head.

I may end up running it into a catch container.

I've thought about making a balance tube across the top. Wouldn't be that hard. Kind of a PITA

_________________
1965 Valiant 200 /6 2dr Sedan.
1965 Valiant 200 V8 4dr Wagon
1965 Barracuda /6
1965 Valiant Convertible V8


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PostPosted: Tue Jun 05, 2018 10:33 am 
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 16447
Location: Blacksburg, VA
Car Model:
PCV valve is one way, so no problem with boost. I am running a stock PCV at 14 psi boost.

Lou

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