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1963 Fuel injection woes

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Old 08-23-2016, 05:49 PM
  #101  
1969RAY
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When I first saw the screen I was amazed that it could be manufactured in '63 (maybe as far back as '57) and the hole in the metering orifice is nearly invisible. Makes me wonder how it's possible to push 20 gallons gas through 8 of those in a month!
All new to me and interesting.
Old 08-23-2016, 06:43 PM
  #102  
MOXIE62
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To old thread to respond too.

Last edited by MOXIE62; 08-23-2016 at 06:48 PM.
Old 09-05-2016, 11:59 AM
  #103  
rogernison
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Default Rochester fuel injection

Originally Posted by 1969RAY
When I first saw the screen I was amazed that it could be manufactured in '63 (maybe as far back as '57) and the hole in the metering orifice is nearly invisible. Makes me wonder how it's possible to push 20 gallons gas through 8 of those in a month!
All new to me and interesting.
Does anyone know the CFM of a 63-65 Rochester air meter?
Old 09-05-2016, 12:51 PM
  #104  
jim lockwood
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Originally Posted by rogernison
Does anyone know the CFM of a 63-65 Rochester air meter?
Just slightly less than 700 cfm at 28" depression.


Edit: I should qualify that number by adding that it was measured with the choke shaft and choke butterfly removed. If the choke hardware is present, air flow will be slightly less but I don't know by how much.

Last edited by jim lockwood; 09-05-2016 at 12:57 PM.
Old 09-05-2016, 12:53 PM
  #105  
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Originally Posted by 1969RAY
When I first saw the screen I was amazed that it could be manufactured in '63 (maybe as far back as '57) and the hole in the metering orifice is nearly invisible. Makes me wonder how it's possible to push 20 gallons gas through 8 of those in a month!
The "secret" is the fuel pressure. At wide open throttle, nozzle fuel pressure can reach 200 PSI.
Old 09-05-2016, 01:54 PM
  #106  
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the BIG perc problem is that fuel pressure in the spider is 'almost' non-existent in a C1 spider/nozzles
Bill



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