Author Topic: 69 R code carburettor  (Read 579 times)

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Offline derek

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69 R code carburettor
« on: July 11, 2019, 11:20:18 am »
My original carb has a hollow stud on drives side rear currently blanked off .Where should this vacuum port be attached to? Nothing is shown on schematic Page of vacuum pipe placement in the 69 ford car line manual.
Mighty Mach

Offline Jiffy

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Re: 69 R code carburettor
« Reply #1 on: July 11, 2019, 05:15:17 pm »
Carb or intake manifold? You’ll need pics if it’s the carb.

Offline Brian Conway

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Re: 69 R code carburettor
« Reply #2 on: July 11, 2019, 05:24:00 pm »
A ' search ' will get some more info on this hollow stud. Seems to be mostly for the auto C6 cars ?  Brian     
« Last Edit: July 12, 2019, 05:14:12 pm by Brian Conway »
65 5R09A 4 spd  GT  Built 5/29/65 
69 9T02R 4 spd  SCJ Built 9/19/68
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Offline BIGBLOCKHEAD

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Re: 69 R code carburettor
« Reply #3 on: July 11, 2019, 05:25:21 pm »
yes, some 69's have a hollow left rear carb stud that has a vacuum signal.  My 69 San Jose car has this, I have never been able to determine what it was needed for. I have mine capped off with a rubber cap.

Offline RoyceP

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Re: 69 R code carburettor
« Reply #4 on: July 11, 2019, 06:39:19 pm »
That should be connected to the vacuum modulator of your automatic transmission. Manual trans cars don't have that.


My original carb has a hollow stud on drives side rear currently blanked off .Where should this vacuum port be attached to? Nothing is shown on schematic Page of vacuum pipe placement in the 69 ford car line manual.
1910 Model T Ford Touring Red
1915 Model T Ford Touring Black
1914 Model T Ford Touring
1917 Model T Ford Torpedo Green
1968 Mercury Cougar XR-7 GT-E Green 427 W Code
1968 Mercury Cougar XR-7 428CJ R code 3.91 C6

Offline 69 R Code

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Re: 69 R code carburettor
« Reply #5 on: July 11, 2019, 08:08:12 pm »
Didnt early 69 's use it for  flapper for shaker

Offline 70cj428

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Re: 69 R code carburettor
« Reply #6 on: July 11, 2019, 08:31:59 pm »
Quote
That should be connected to the vacuum modulator of your automatic transmission. Manual trans cars don't have that.

+1

Quote
Didnt early 69 's use it for  flapper for shaker

I thought that the shaker hooked to the small nipple on the rear manifold fitting, wasn't aware early cars were different...
70 "R" code Mach1, Wimbleton White / Vermillion, Auto, AC,
70 "Q" code Mach1, Grabber Green / White, Auto,AC
70 "M" code Mach1, Med. Gold / Ginger, Auto, AC
68 "S" code GT Fastback, Wimbleton White / Black deluxe int.,4 speed, AC, (getting a 427SO..)

Offline RoyceP

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Re: 69 R code carburettor
« Reply #7 on: July 12, 2019, 09:34:55 am »
Agree, the vacuum pull off (non shaker) or flapper (shaker) would hook to manifold vacuum on the block to the rear of the PCV hook up. Don't the Osborne assembly manuals show that for '69 cars?


Quote
That should be connected to the vacuum modulator of your automatic transmission. Manual trans cars don't have that.

+1

Quote
Didnt early 69 's use it for  flapper for shaker

I thought that the shaker hooked to the small nipple on the rear manifold fitting, wasn't aware early cars were different...
1910 Model T Ford Touring Red
1915 Model T Ford Touring Black
1914 Model T Ford Touring
1917 Model T Ford Torpedo Green
1968 Mercury Cougar XR-7 GT-E Green 427 W Code
1968 Mercury Cougar XR-7 428CJ R code 3.91 C6

Online redscj

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Re: 69 R code carburettor
« Reply #8 on: July 12, 2019, 04:18:00 pm »
     Learning something new here. Did all auto CJ's get the vacuum signal from this hollow stud? Anybody make a replacement stud? Does the threads go all the way to the end? A picture of the stud would be greatly appreciated.
Grant
69 Mach 1 Dearborn SCJ 4.30 4spd 6/17/69 Candy Apple Red
69 Sportsroof Metuchen SCJ 4.30 C6 5/28/69 Acapulco Blue

Offline RoyceP

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Re: 69 R code carburettor
« Reply #9 on: July 12, 2019, 06:24:15 pm »
Mansfield has them in stock.



     Learning something new here. Did all auto CJ's get the vacuum signal from this hollow stud? Anybody make a replacement stud? Does the threads go all the way to the end? A picture of the stud would be greatly appreciated.
1910 Model T Ford Touring Red
1915 Model T Ford Touring Black
1914 Model T Ford Touring
1917 Model T Ford Torpedo Green
1968 Mercury Cougar XR-7 GT-E Green 427 W Code
1968 Mercury Cougar XR-7 428CJ R code 3.91 C6

Online redscj

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Re: 69 R code carburettor
« Reply #10 on: July 12, 2019, 08:13:11 pm »
     Thanks RoyceP, that is pretty much as I imagined it. Guessing at the obvious. All CJ intakes had this hole drilled into the plenum/runner?
Grant
69 Mach 1 Dearborn SCJ 4.30 4spd 6/17/69 Candy Apple Red
69 Sportsroof Metuchen SCJ 4.30 C6 5/28/69 Acapulco Blue

Offline Vcode

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Re: 69 R code carburettor
« Reply #11 on: July 12, 2019, 09:13:53 pm »
Agree, the vacuum pull off (non shaker) or flapper (shaker) would hook to manifold vacuum on the block to the rear of the PCV hook up. Don't the Osborne assembly manuals show that for '69 cars?


Quote
That should be connected to the vacuum modulator of your automatic transmission. Manual trans cars don't have that.

+1

Quote
Didnt early 69 's use it for  flapper for shaker

I thought that the shaker hooked to the small nipple on the rear manifold fitting, wasn't aware early cars were different...

The 69 Osborn Engine Assembly manual has several pages (143-146) on the 428 vacuum connections (Ram Air / non Ram Air / Auto / Manual) shows the line for the Shaker going to the brass fitting by the PCV fitting.
The 69 Osborne chassis manual pg. 45 shows the auto. trans. vacuum line going to the brass tee fitting from the PCV fitting. There is also a chart on pg. 95 showing the various tee’s used.
'69 Mach 1 SCJ

Offline derek

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Re: 69 R code carburettor
« Reply #12 on: July 13, 2019, 03:32:55 am »
Gearbox vacuum pipe connected to rear vacuum T port as is flapper pipe
Mighty Mach

Offline geo302b

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Re: 69 R code carburettor
« Reply #13 on: July 15, 2019, 02:50:13 pm »
I remember a NASCAR team got caught with one on their plate car.