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 440Likes
10-27-2019, 06:16 PM
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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
I mean you would need to remove the plate and all of the ram tubes to remove one carburetor if you had say a bad needle and seat, is that correct?
Gary
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10-27-2019, 07:52 PM
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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: 13,151
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Not Ranked
Bill - I'm assuming it's an airbox similar in concept to those fitted on the original Daytonas, yes?
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10-29-2019, 08:36 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
Quote:
Originally Posted by xb-60
Bill - I'm assuming it's an airbox similar in concept to those fitted on the original Daytonas, yes?
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Similar, but attached beneath the air horns instead of the carbs. I’m going to replicate this
Today I finished plotting all the dimensions for the base plate on some heavy duty poster board material. All dims are 1:1 scale
Next up will be to transfer them to a sheet of .060 6061 aluminum |
10-30-2019, 04:13 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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Quote:
Originally Posted by xb-60
Bill - I'm assuming it's an airbox similar in concept to those fitted on the original Daytonas, yes?
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Yes, that's correct Glen.
Seems a lot of work to me, only to make it harder to work on down the track.
Mechanics view here, and I have had many Weber setups.
Gary |
11-03-2019, 09:25 PM
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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: 13,151
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Not Ranked
Bill, just out of personal interest, I found this picture of the "air box" on COB 6008 in its earlier days....
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11-05-2019, 03:09 PM
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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 xb-60
Bill, just out of personal interest, I found this picture of the "air box" on COB 6008 in its earlier days....
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Good pic there Glen.
Access panel down the middle for easier access to carb linkages.
Gary |
11-16-2019, 09:27 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
Received my new carbide tip 2.125 hole cutter for the air horns. Cuts like a hot knife through butter. Expensive but so much better than the **** at Home Depot or Lowes
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11-17-2019, 05:17 PM
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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: 13,151
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Not Ranked
Carbide tipped cutters really are good. I've been using a 1" carbide tipped cutter for cutting holes in 1.2mm SS sheet.
A job that I thought would be hard work and take a long time was just so easy to produce nice clean, accurate holes.....and that was using a hand held drill 
Cheers,
Glen |
11-21-2019, 08:34 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
Nearly finished with base plate. Air horns and fuel inlet reliefs turned out great. Still need to cut the access openings for the needles and jets.
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11-22-2019, 04:10 AM
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CC Member
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Join Date: Aug 2013
Location: Canandaigua,
NY
Cobra Make, Engine: SPF MKII Riverside Racer FIA
Posts: 2,499
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Not Ranked
Looking nice Bill. As always, nice wrk.
Jim
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11-22-2019, 03:21 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
Cut my first access hole to access the needles and jets. What a bear. But got one done. Took one hour. Three to go. Ugh! Time for a beer
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11-22-2019, 05:33 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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Cut the second access opening. Then Decided to clean up one side to see how,it will look. Really difficult to sand with all the holes. Tears up the paper. Maybe use full sheets and a piece of wood. Another issue is the air horn retaining pieces. The air horns sit higher because of the aluminum base causing the retaining clip to be at an awkward angle. Will experiment with washers as a fix
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11-22-2019, 09:43 PM
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CC Member
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Join Date: Jan 2018
Location: Lafayette,
IN
Cobra Make, Engine: Looking to buy
Posts: 1,295
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Looks nice!
__________________
 Cobra loving, autocrossing Grandpa Architect.
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12-05-2019, 11:15 AM
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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
Seems I have run into a insurmountable problem. Door hinges. Using Bruce’s body and the FFR frame and door hinges, the doors only open part way. The leading edge of the doors hit the body. I thought about lengthening the arms on the hinges but that throws the mounting points off where the hinge mounts to the door. Nothing lines up.
I will use the cut up hinge on the right that mounts to the door, and the frame mount on the left, and design/build my own swing arms.
Last edited by Bill D; 12-05-2019 at 03:51 PM..
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12-05-2019, 06:27 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
Door taped in place. Hinge brackets attached. Tomorrow will begin laying out the swing arms
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12-05-2019, 06:56 PM
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CC Member
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Join Date: Jan 2011
Cobra Make, Engine: Hi-Tech
Posts: 734
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Not Ranked
Hi Bill,
Have you thought about moving the hinge mounting point back from its current position on the cowl, towards the rear of the car? I believe this helped with the clearance issues I was having with my doors.
I am sure you will figure it out. You have run into more than a few challenges on this build and you have always persevered!!
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12-05-2019, 07:43 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
Moving the hinge back would be cumbersome and look funny. Going with my method allows me more leeway with alignment and fitment.
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12-08-2019, 03:24 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: 13,151
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Not Ranked
Bill, what's the hole in the door for? A roundel light?
Cheers,
Glen
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12-08-2019, 02:24 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
Quote:
Originally Posted by xb-60
Bill, what's the hole in the door for? A roundel light?
Cheers,
Glen
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Yes, the hole is for a roundel light.
Last edited by Bill D; 12-09-2019 at 06:57 AM..
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12-08-2019, 11:14 PM
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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: 13,151
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Not Ranked
Which light will you be using?
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