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Dual air meter FI unit
For those who may be interested in this sort of thing, here is one that I'm finishing up with.
http://i65.photobucket.com/albums/h2...ps7b129c5e.jpg The fuel meter side is virtually unchanged (but ONLY EXternally). http://i65.photobucket.com/albums/h2...pseb591958.jpg http://i65.photobucket.com/albums/h2...ps9fa8f852.jpg http://i65.photobucket.com/albums/h2...psffa2cb94.jpg http://i65.photobucket.com/albums/h2...ps45f7149f.jpg http://i65.photobucket.com/albums/h2...ps8e982772.jpg http://i65.photobucket.com/albums/h2...ps536c422a.jpg http://i65.photobucket.com/albums/h2...ps7dca0488.jpg http://i65.photobucket.com/albums/h2...ps990d7c79.jpg http://i65.photobucket.com/albums/h2...ps42d0ab8f.jpg |
Thats gonna flow some air!:thumbs:
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Really nice work! Is that for a customer, or for yourself?
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Wow Tom, looks like a tremendous job. Looking forward to more info as you progress.
How did you block off the center stock port on the plenum? It almost looks like it's undetectable in the pictures. Rich |
i seen one with 3; 2 on the top and the original on the side...
Bill |
Bill Thomas would love you Tom!
Verne:cheers: |
Originally Posted by vettsplit 63
(Post 1586549000)
Really nice work! Is that for a customer, or for yourself?
It had NO starting circuit nor chokes. I fabricated everything for a starting circuit system just like on a 7380 unit (micro switch, 7380 fuel spider/solenoid and the fuel meter lid had to be changed). I fabricated all new main signal lines and rounded up everything to make the chokes work and fabricated vacuum lines for the choke pull off. The car will have headers, thus an exhaust heated choke tube cannot be used, so I installed elec choke covers---------------which work perfect! The entire left side of the plenum was cut out, the runners were cut down to the floor of the plenum, a 1/2in alum plate welded in, machined, holes were cut in place and new studs installed. http://i65.photobucket.com/albums/h2...psf82deda2.jpg http://i65.photobucket.com/albums/h2...pseb6ffbee.jpg http://i65.photobucket.com/albums/h2...psca6250da.jpg Since there was no starting circuit, I had to fabricate a method of mounting a micro switch from scratch. So here is where I put it. With everything assembled, it's almost completely hidden. http://i65.photobucket.com/albums/h2...ps9d28647c.jpg This is the way the unit came to me. No chokes (the choke housing on the front AM is empty) and no micro switch. http://i65.photobucket.com/albums/h2...ps320674a9.jpg http://i65.photobucket.com/albums/h2...ps0300d893.jpg |
This is the more common method of building a dual air meter unit. This particular one was on the Grady Davis Gulf Oil racer.
http://i65.photobucket.com/albums/h2...an0030_030.jpg http://i65.photobucket.com/albums/h2...an0027_027.jpg And this is an early style which is on the SR2 that was recently sold by Rich Mason. This is the type that I want to build for the 56 http://i65.photobucket.com/albums/h2...nobreather.jpg This is one installed on one of Bill Thomas' Cheetahs. http://i65.photobucket.com/albums/h2...s/Cheetah2.jpg http://i65.photobucket.com/albums/h2...etahdualAM.jpg |
GREAT pictures and story Tom!!! Now that I know this was an "option" on my 1963 Z06, I need you to build me one:rofl:
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Tom
did you modify the spill plunger/spill valve to compensate for the 1/2 strength main signal, or was that already done? I know a bushing was installed in the "tack" type spill valve to decrease the id, and the head of the tack was reduced proportionally. Any photos AND dimensions would be appreciated. Bill Thomas supposedly did some special maching to the tips of the nozzles, but was secretive about details because he wanted to MARKET a dual a/m setup. What are the intake runner lengths (plenum floor to valve) on this unit versus a production plenum? As a FI guy (I run a 1963 unit on my 1956) I always enjoy your posts.Keep up the good work, and keep us updated. thanks. |
The "thumb tack" style spill valve had already been modified as you mentioned. The Nozzles had been modified and the spring in the enrichment housing had about one coil cut off. All of the above were modifications per Bill Thomas' specs.
Originally, I was tasked to install a starting circuit. One thing led to another, and I did a total rebuild in addition to the other things. I'm especially pleased with the way the chokes turned out. |
Cool project Tom! Looking forward to some performance tests on this unit. What will it be going on? Nice work!!:cheers:
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Originally Posted by K2
(Post 1586557314)
Cool project Tom! Looking forward to some performance tests on this unit. What will it be going on? Nice work!!:cheers:
It's not my unit. It belongs to one of the CF members here. As I understand, he has a 63 race car that it will go on. We'll have to wait until he gets it installed to see how it does. |
Attaboy
Hats off to you guys with the skills to make these things happen. My skill level is pretty much limited to changing parts out, and I have great admiration for the experts.:cheers:
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Tom,
A guy in Columbus , Ohio had a C1 dual air horn unit on Craigslist a few years ago. Very cool. I just couldn't afford it at the time. Bruce B |
Originally Posted by DZAUTO
(Post 1586554057)
The "thumb tack" style spill valve had already been modified as you mentioned. The Nozzles had been modified and the spring in the enrichment housing had about one coil cut off. All of the above were modifications per Bill Thomas' specs.
Originally, I was tasked to install a starting circuit. One thing led to another, and I did a total rebuild in addition to the other things. I'm especially pleased with the way the chokes turned out. Very interesting looks killer! rustylugnuts :thumbs: |
Originally Posted by rustylugnuts
(Post 1586561383)
Wonder how much more performance it delivered over conventional setup, any dyno results? rustylugnuts :thumbs: http://www.racingicons.com/gs/004/gulf.htm |
Originally Posted by MikeM
(Post 1586561477)
Hold yer fire. I'm merely the messenger(:D) but it looks like they come up a little short. Don't know whether this Gulf Oil dyno sheet is for a 327 or a 377 engine. It says 327. I have always heard, they don't run worth a crap over the whole rpm band!
http://www.racingicons.com/gs/004/gulf.htm Bill |
Originally Posted by DZAUTO
(Post 1586554057)
The "thumb tack" style spill valve had already been modified as you mentioned. The Nozzles had been modified and the spring in the enrichment housing had about one coil cut off. All of the above were modifications per Bill Thomas' specs.
Originally, I was tasked to install a starting circuit. One thing led to another, and I did a total rebuild in addition to the other things. I'm especially pleased with the way the chokes turned out. |
Originally Posted by DZAUTO
(Post 1586550322)
It was sent to me by one of the CF members right here.
It had NO starting circuit nor chokes. I fabricated everything for a starting circuit system just like on a 7380 unit (micro switch, 7380 fuel spider/solenoid and the fuel meter lid had to be changed). I fabricated all new main signal lines and rounded up everything to make the chokes work and fabricated vacuum lines for the choke pull off. The car will have headers, thus an exhaust heated choke tube cannot be used, so I installed elec choke covers---------------which work perfect! The entire left side of the plenum was cut out, the runners were cut down to the floor of the plenum, a 1/2in alum plate welded in, machined, holes were cut in place and new studs installed. http://i65.photobucket.com/albums/h2...psf82deda2.jpg http://i65.photobucket.com/albums/h2...pseb6ffbee.jpg http://i65.photobucket.com/albums/h2...psca6250da.jpg Since there was no starting circuit, I had to fabricate a method of mounting a micro switch from scratch. So here is where I put it. With everything assembled, it's almost completely hidden. http://i65.photobucket.com/albums/h2...ps9d28647c.jpg This is the way the unit came to me. No chokes (the choke housing on the front AM is empty) and no micro switch. http://i65.photobucket.com/albums/h2...ps320674a9.jpg http://i65.photobucket.com/albums/h2...ps0300d893.jpg |
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