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PostPosted: Sun Aug 12, 2012 8:05 am 
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2 BBL ''SuperSix''

Joined: Wed Oct 26, 2011 3:32 am
Posts: 19
Location: Montana
Car Model:
You did what? Cut a 4-bbl in half?
From your friendly "Precision Hacksaw Machinist" - I spent years learning a lot about carburetion, trying to get a Four-Barrel carb to run right on my 225 Slant Six. I learned it was just too over-carbureted, too many CFM, not enough cubes. So I decided to make my own progressive Two-Barrel carb.
I figured an 850-cfm Carter Thermo-Quad ran a 440 so well, half of one should run a 225 pretty good. So I took a non-smogger and cut it in half! Countless man-hours and some J-B Weld later, ta-da! My one-of-a-kind 300-cfm Carter Thermo-Dual and intake manifold to match.
It's amazing what you can accomplish with a hacksaw and a file. This was all done by hand, nothing was 'machined'. How's that for home-fabricated?
https://skydrive.live.com/redir?resid=D ... 8BD346!252

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Run it like ya stole it!

1966 Barracuda, SL6, 4spdOD, 4bbl
1965 D200 CrewCab, SL6


Last edited by cum*do_ge on Sun Aug 12, 2012 9:39 am, edited 1 time in total.

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PostPosted: Sun Aug 12, 2012 9:10 am 
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1 BBL (New)
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Joined: Wed Aug 10, 2011 1:45 pm
Posts: 7
Location: 360, WA
Car Model:
Can't view photos, but you sir, are either a madman or a genius.

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1985 D-150 225 /6

Image


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 Post subject:
PostPosted: Sun Aug 12, 2012 9:20 am 
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2 BBL ''SuperSix''

Joined: Wed Oct 26, 2011 3:32 am
Posts: 19
Location: Montana
Car Model:
Sorry, try viewing the pics using this link -
https://skydrive.live.com/redir?resid=D ... 8BD346!252

_________________
Run it like ya stole it!

1966 Barracuda, SL6, 4spdOD, 4bbl
1965 D200 CrewCab, SL6


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 Post subject:
PostPosted: Sun Aug 12, 2012 9:49 am 
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Board Sponsor
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Joined: Fri Nov 01, 2002 5:02 pm
Posts: 1821
Location: Waterloo, Iowa
Car Model: '23 T-bucket
You really need to post a how-to, with many more pics. A description of cut line locations would be highly beneficial, too.

Roger


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 Post subject:
PostPosted: Sun Aug 12, 2012 10:10 am 
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2 BBL ''SuperSix''

Joined: Wed Oct 26, 2011 3:32 am
Posts: 19
Location: Montana
Car Model:
I'm still figuring out how to post a pic on this site, are the pics showing now? I could post more pics and info of the carb disassembled.

_________________
Run it like ya stole it!

1966 Barracuda, SL6, 4spdOD, 4bbl
1965 D200 CrewCab, SL6


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 Post subject:
PostPosted: Sun Aug 12, 2012 10:41 am 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
Cool idea. It's nice that the Carter has the float chambers on the sides rather than the front and back like a Holley. My question is, how does it run? Any before and after testing?

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Joshua


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 Post subject:
PostPosted: Sun Aug 12, 2012 11:46 am 
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Turbo Slant 6

Joined: Sat Feb 19, 2005 5:31 am
Posts: 969
Location: Norway
Car Model:
I like it!

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I have no idea what I am talking about.


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PostPosted: Sun Aug 12, 2012 12:15 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13031
Location: Fircrest, WA
Car Model: 76 D100
Please post as many pictures and details of this as possible. This is a GREAT idea and I can't wait to hear how it works.


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 Post subject:
PostPosted: Sun Aug 12, 2012 12:52 pm 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24387
Location: North America
Car Model:
Quote:
Can't view photos, but you sir, are either a madman or a genius.
I'm not sure this is an either/or situation. Image

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

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PostPosted: Sun Aug 12, 2012 2:11 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13031
Location: Fircrest, WA
Car Model: 76 D100
Image
Image
Image


Brilliant!


Last edited by Reed on Wed Feb 14, 2018 12:00 pm, edited 1 time in total.

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 Post subject:
PostPosted: Sun Aug 12, 2012 5:37 pm 
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2 BBL ''SuperSix''

Joined: Wed Oct 26, 2011 3:32 am
Posts: 19
Location: Montana
Car Model:
Wish I knew how to post pictures on here. I have more disassembled pics on Photobucket, I just don't know how to do it.

_________________
Run it like ya stole it!

1966 Barracuda, SL6, 4spdOD, 4bbl
1965 D200 CrewCab, SL6


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 Post subject:
PostPosted: Sun Aug 12, 2012 5:39 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
Quote:
Wish I knew how to post pictures on here. I have more disassembled pics on Photobucket, I just don't know how to do it.
There's a sticky in this section of the forum on how to do it..

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

8)


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 Post subject:
PostPosted: Sun Aug 12, 2012 5:52 pm 
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Turbo EFI
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Joined: Sat Jun 19, 2004 8:01 pm
Posts: 1937
Location: Rhine, GA
Car Model:
This is awesome, its a BBD that you can actually get tuning parts for!

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2


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 Post subject:
PostPosted: Sun Aug 12, 2012 5:59 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13031
Location: Fircrest, WA
Car Model: 76 D100
Go to photobucket, put your mouse over the picture you want to post. A drop down menu will appear with four different blocks of text. You want the bottommost block, titled "IMG code." Click once anywhere in that text and it will say "copied." Now come to the best web board in the universe (that's slantsix.org), start a new port or post a reply, and in the dialog box paste the text copied from photobucket. VOILA! You have now posted a link to a picture. It is really very easy.


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 Post subject: Some but not a lot...
PostPosted: Sun Aug 12, 2012 9:00 pm 
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Board Sponsor
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9760
Location: Salem, OR
Car Model:
Quote:
This is awesome, its a BBD that you can actually get tuning parts for!
TQ's aren't as compatible with the available tuning parts for the AFB/AVS, some things will work but you may need to scavenge parts from small block TQ's to get a bit closer to what is needed.

Two things I'd be worried about:
1) Even 30 years ago, TQ's were notorious for having the phenolic resin bowl warp and leak, you may have a good donor now, but it's only a matter of time...
2) Small plenum manifolds with the big secondary aren't very well matched, typically this creates low vacc. signal once the secondary
cracks a bit (it doesn't take much opening angle on the larger plate to flow the same as the smaller plate at less of an angle). Quick drop off of vacc. is usually accompanied by poor gas mileage (think large Holley 2 barrel on not so gasket matched super six manifold...)

It is a nifty idea that one carb manufacturer has put into play, but with nominal bore sizes...I think using one of the 340/360 TQ's would have been better start.

Let us know how testing goes.

-D.Idiot


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