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Sealed Up Carb to Scoop.... #1644777
07/10/14 12:14 AM
07/10/14 12:14 AM
Joined: Jan 2003
Posts: 3,872
Smyrna, South Carolina
STEFF Offline OP
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STEFF  Offline OP
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Smyrna, South Carolina
I whipped up an air pan to seal the Carb to the hood. It seals up real nice. I even blocked off the back of the scoop, so the only place the air can go is down the carb. Anyone see anything that may cause me problems?

Also, I ran a string from the front of hood to the roof to see where the scoop opening lies, it's above that line, if that means anything.







Re: Sealed Up Carb to Scoop.... [Re: STEFF] #1644778
07/10/14 12:21 AM
07/10/14 12:21 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Looks like it'll work nice... I see you did the old
string trick

Re: Sealed Up Carb to Scoop.... [Re: MR_P_BODY] #1644779
07/10/14 12:44 AM
07/10/14 12:44 AM
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Portage,michigan
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B3422W5 Offline
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Looks nice and should be very effective


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: Sealed Up Carb to Scoop.... [Re: B3422W5] #1644780
07/10/14 06:45 AM
07/10/14 06:45 AM
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Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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Nice work there. I don't know how effective it would be, but will offer a couple of thoughts. You might see some difference if the back of the scoop was unplugged. It all depends on whether the scoop is above the boundary layer coming off the front of the car, and if the air entry is smooth enough for max air flow. The back block off could be run open, holes in it, or screened, to modify the way the air moves around inside the scoop , hopefully to make it as calm as the airflow can be. I used an air cleaner base riveted to the air pan to help this. I also have a very large air filter made out of door screen to keep the bigger rocks out, and maybe keep the turbulence down around the carb inlet. One way to find out how effective your system is would be to build a system for testing that would run without the hood, but incorporate what ever you figure may improve or help air flow. air bell, taller scoop, 14x 6 inch K&N filter, (I just bought one, going on shortly!)
By the way, K&N makes a pretty big rectangular 2 1/2 inch tall filter that just might fit inside your scoop. It has 180 square inches of filter area, which is supposed to flow enough to take care of about 800 hp. They have a formula on their web sight to figure it out.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Sealed Up Carb to Scoop.... [Re: gregsdart] #1644781
07/10/14 05:19 PM
07/10/14 05:19 PM
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Thumperdart Offline
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My scoop was turbulent crazy like till I put some teardrop holes in the back and it`s a 6-pack scoop sealed and is definately pullin in air cos it`s trying to rip it off even at slow 45 mph speeds. I did the string deal also and ideally they say you want the opening ABOVE the string but mines a bit less than 1/2 way..........


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Sealed Up Carb to Scoop.... [Re: STEFF] #1644782
07/10/14 05:39 PM
07/10/14 05:39 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline
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Chicago, IL
Looks real nice!


2 kids and a dog
Re: Sealed Up Carb to Scoop.... [Re: TonyS451] #1644783
07/10/14 05:44 PM
07/10/14 05:44 PM
Joined: Feb 2003
Posts: 3,998
GO BUCKS !!!!!!!
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340RICK Offline
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GO BUCKS !!!!!!!
Nice work as always Steff

Gotta be worth a least 3 or 4 tenths

Re: Sealed Up Carb to Scoop.... [Re: 340RICK] #1644784
07/10/14 05:49 PM
07/10/14 05:49 PM
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Minnesota
Barnstorm Offline
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Minnesota
Don't overlook connecting the bowl vents with a piece of tubing.


The little old lady from Pasadena is back!
Re: Sealed Up Carb to Scoop.... [Re: Barnstorm] #1644785
07/10/14 06:03 PM
07/10/14 06:03 PM
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Thumperdart Offline
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Quote:

Don't overlook connecting the bowl vents with a piece of tubing.




Good point.............


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Sealed Up Carb to Scoop.... [Re: MR_P_BODY] #1644786
07/10/14 07:43 PM
07/10/14 07:43 PM
Joined: Sep 2012
Posts: 1,563
Janesville, WI
SpareParts Offline
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Janesville, WI
Can I get a play by play on the string trick? Not familiar with it

Re: Sealed Up Carb to Scoop.... [Re: SpareParts] #1644787
07/10/14 07:46 PM
07/10/14 07:46 PM
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Thumperdart Offline
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Quote:

Can I get a play by play on the string trick? Not familiar with it




You run a string from the ft. of the hood up to the roof line and apparently would like the scoop opening above that idealy.......


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: Sealed Up Carb to Scoop.... [Re: Thumperdart] #1644788
07/10/14 08:00 PM
07/10/14 08:00 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Quote:

Quote:

Can I get a play by play on the string trick? Not familiar with it




You run a string from the ft. of the hood up to the roof line and apparently would like the scoop opening above that idealy.......




You want the BOTTOM of the scoop inlet above the string

Re: Sealed Up Carb to Scoop.... [Re: MR_P_BODY] #1644789
07/11/14 12:22 PM
07/11/14 12:22 PM
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Renton Washington
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Triple Threat Offline
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Have you taken it to the track yet? Curious to hear what it runs!


-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: Sealed Up Carb to Scoop.... [Re: Triple Threat] #1644790
07/11/14 12:46 PM
07/11/14 12:46 PM
Joined: Jan 2003
Posts: 3,872
Smyrna, South Carolina
STEFF Offline OP
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STEFF  Offline OP
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Quote:

Have you taken it to the track yet? Curious to hear what it runs!




I've been out twice, with issues that netted no real results. I'm hoping to get out tonite for some T & T, if the weather holds up.

Re: Sealed Up Carb to Scoop.... [Re: STEFF] #1644791
07/11/14 12:58 PM
07/11/14 12:58 PM
Joined: Jun 2003
Posts: 9,225
Charleston
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sixpackgut Offline
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Charleston
Quote:

Quote:

Have you taken it to the track yet? Curious to hear what it runs!




I've been out twice, with issues that netted no real results. I'm hoping to get out tonite for some T & T, if the weather holds up.




looks like it should work great and now that's its made you can actually test it and give us feedback


Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: Sealed Up Carb to Scoop.... [Re: sixpackgut] #1644792
07/11/14 01:01 PM
07/11/14 01:01 PM
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Posts: 9,225
Charleston
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sixpackgut Offline
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what rear tire are you running?

what is your gear/tire size and converter combo?

I'm using my converter from the big block and either it needs to be loosened up or hit with a shot of nitrous


Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: Sealed Up Carb to Scoop.... [Re: gregsdart] #1644793
07/11/14 02:24 PM
07/11/14 02:24 PM
Joined: Dec 2003
Posts: 22,696
Bitopia
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jcc Offline
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Bitopia
"Nice work there. I don't know how effective it would be, but will offer a couple of thoughts."

A Go Pro and a dozen? tuff's of yarn strategically placed would will fill in a lot of the unknowns here, and be a pretty easy test.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: Sealed Up Carb to Scoop.... [Re: jcc] #1644794
07/11/14 03:17 PM
07/11/14 03:17 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline
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I ended up blocking off the back cavity of my scoop like you, and that seemed to help with some turbulence problems that was sucking fuel out of the bleeds of my dominator, hasn't done it since,nice job on the pan, looks professional.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: Sealed Up Carb to Scoop.... [Re: sixpackgut] #1644795
07/11/14 03:19 PM
07/11/14 03:19 PM
Joined: Jan 2003
Posts: 3,872
Smyrna, South Carolina
STEFF Offline OP
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STEFF  Offline OP
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Smyrna, South Carolina
Quote:

what rear tire are you running?

what is your gear/tire size and converter combo?

I'm using my converter from the big block and either it needs to be loosened up or hit with a shot of nitrous




31 x 16.5 ET Street, Ford 9" with 4.57:1 gear, 8" UCC Converter. Even though the last two outings had there issues, I'm pretty sure the car will be getting a gear change to a 5:00 ratio and the converter needs the flash raised. Right now, it's hitting about 5000. Peak torque was at 5200, so I'm thinking of having it raised to 5500, but I'm kinda on the fence with the higher flash, as the car has been seeing plenty of street duty.

Re: Sealed Up Carb to Scoop.... [Re: dartman366] #1644796
07/11/14 03:21 PM
07/11/14 03:21 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
Mr.Yuck  Offline
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Posts: 24,562
Brookeville, Md
I was thinking of doing the same w/ my cowl, wonder if it's worth the effort....


[IMG]http://i66.tinypic.com/pui5j.jpg[/IMG]
Coming soon!!!!
Re: Sealed Up Carb to Scoop.... [Re: Mr.Yuck] #1644797
07/11/14 03:23 PM
07/11/14 03:23 PM
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366 Offline
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Quote:

I was thinking of doing the same w/ my cowl, wonder if it's worth the effort....


put some tape across it and make a pass or two and see if that helps or hurts it.


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
Re: Sealed Up Carb to Scoop.... [Re: dartman366] #1644798
07/11/14 03:41 PM
07/11/14 03:41 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
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Not enough dumb comments...yet

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Posts: 24,562
Brookeville, Md
Quote:

Quote:

I was thinking of doing the same w/ my cowl, wonder if it's worth the effort....


put some tape across it and make a pass or two and see if that helps or hurts it.




could try that, I also need to block off the "cowl vent" to make the cowl actually work as it should.

Re: Sealed Up Carb to Scoop.... [Re: Mr.Yuck] #1644799
07/11/14 04:00 PM
07/11/14 04:00 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
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Thumperdart Offline
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Blocking the cowl vent helped me when I ran a cowl scoop.............


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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