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 1Likes
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1
Post By xb-60
11-04-2019, 06:46 PM
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CC Member
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Join Date: Jul 2006
Location: Redding,
CA
Cobra Make, Engine: FFR chassis and suspension, Mr. Bruce 289 FIA body
Posts: 1,066
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Not Ranked
Cold Air Box Fabrication
I am really going to test my fabrication skills trying to fabricate this cold air box grow .063 6061 aluminum.
Dimensions taken and plotted. Ready to layout the first (and only) attempt |
11-05-2019, 02:39 AM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,152
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Not Ranked
Bill, from what I've seen of your fabrication skills so far, I have every confidence that you'll turn out a very functional and professional looking air box. Looking forward to seeing the progress.
Cheers,
Glen
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11-05-2019, 01:11 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,405
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Not Ranked
You should also dimension the center-points for all the corner radius’s, trying to line up two edges of the bit will cause many errors....
The sides could be a separate piece from the horizontal sheet too. Bending could be difficult as the sides do not appear to be 90 degrees to the base?
You could make a test on plexiglass sheet first....
Blas
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Last edited by Blas; 11-05-2019 at 01:17 PM..
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11-06-2019, 05:24 PM
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CC Member
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Join Date: Jan 2018
Cobra Make, Engine:
Posts: 114
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Not Ranked
I'd be curious is there is any gain it loss. I know the turkey pan and restrictive air filter kills power.
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11-06-2019, 06:26 PM
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CC Member
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Join Date: Dec 2003
Location: Gurnee,
IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
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Not Ranked
Quote:
Originally Posted by Jdata
I'd be curious is there is any gain it loss. I know the turkey pan and restrictive air filter kills power.
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Building a air box can create a reversion outside in the air box when enclosed.
__________________
Morris
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11-07-2019, 03:23 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
Quote:
Originally Posted by Jdata
I'd be curious is there is any gain it loss. I know the turkey pan and restrictive air filter kills power.
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The small air filter restricts power, the turkey pan does not.
Quote:
Originally Posted by Morris
Building a air box can create a reversion outside in the air box when enclosed.
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Please elaborate.
Both of my Webered cars show no sign of fuel reversion in their airboxes.
Gary |
11-07-2019, 08:25 AM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,020
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Not Ranked
I was curious whether this was similar to what I've designed for the ERA GT cold air box (base). The venturi holes are only about .040" diagonal offset from my drawing. If Bill D wants to share his effort, I can supply a DXF. (I couldn't find an overall height, so I just guessed.)
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