Author Topic: 1970 Rochester Two-Jet  (Read 2786 times)

Offline Ethan1

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1970 Rochester Two-Jet
« on: June 28, 2012, 05:11:59 PM »
 I have a Rochester Two-Jet. Part number 7040436. I notice there is a plug on the air horn and what looks to be an APT system right by the power valve. Is it an adjustable part throttle?

 Thanks!
Ethan

1972 Chevelle

(oo______oo)

Offline Cliff Ruggles

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Re: 1970 Rochester Two-Jet
« Reply #1 on: July 03, 2012, 10:17:52 AM »
Can you post a pic of it......Cliff

Offline Ethan1

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Re: 1970 Rochester Two-Jet
« Reply #2 on: July 03, 2012, 10:56:04 AM »
Can you post a pic of it......Cliff

 I took a look again and that plug is not over this screw by the power valve, so I didn't take a pic of the plug. The plug is right near the accelerator pump.

 Here is a pic of that screw by the power valve.

 

 
Ethan

1972 Chevelle

(oo______oo)

Offline Cliff Ruggles

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Re: 1970 Rochester Two-Jet
« Reply #3 on: July 04, 2012, 05:01:44 AM »
"Screw by the power valve".  I see a cup with a feed hole leading down to the APT screw.  This was used on some late model 2GC units.   Here is some good reading on it, with pics:

http://books.google.com/books?id=DwUMAaiyMoYC&pg=PA154&lpg=PA154&dq=Rochester+2GC+apt+system&source=bl&ots=02Uo1coIuw&sig=IPslXBqghHTnrTdWSVtCBPuRQmY&hl=en&sa=X&ei=8i_0T53XD8na2wWJ09TEBg&ved=0CEoQ6AEwAg#v=onepage&q=Rochester%202GC%20apt%20system&f=false

Offline Ethan1

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Re: 1970 Rochester Two-Jet
« Reply #4 on: July 04, 2012, 05:22:23 PM »
"Screw by the power valve".  I see a cup with a feed hole leading down to the APT screw.  This was used on some late model 2GC units.   Here is some good reading on it, with pics:

http://books.google.com/books?id=DwUMAaiyMoYC&pg=PA154&lpg=PA154&dq=Rochester+2GC+apt+system&source=bl&ots=02Uo1coIuw&sig=IPslXBqghHTnrTdWSVtCBPuRQmY&hl=en&sa=X&ei=8i_0T53XD8na2wWJ09TEBg&ved=0CEoQ6AEwAg#v=onepage&q=Rochester%202GC%20apt%20system&f=false

 Thank you, Cliff. Sorry, didn't know what else to call it. :D
Ethan

1972 Chevelle

(oo______oo)