Author Topic: 79 301 air cleaner part I.D.  (Read 2492 times)

jbirds

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79 301 air cleaner part I.D.
« on: October 07, 2013, 08:13:49 AM »
I have another strange question.On my air cleaner by the snorkle is a small round part that clips in to the side of air cleaner base.One port goes to the baffle in the snorkle and the other port goes to the port under air cleaner to another AC clipped in valve.The part I have{broken}is AC number 8994838 and has two tubes coming out of it.I need another one in that one tube broke off and no mention of this is in any drawings or manuals.Any ides what this is called? Thanks

jjr

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Re: 79 301 air cleaner part I.D.
« Reply #1 on: October 07, 2013, 07:35:51 PM »

 jbirds,

 I like to hear of folks learning and restoring their cars to original. In addition,
to many other cars, I tend to help 301 owners where I can.

 I can see that you are new to the fun, and have some common questions
along with tuffer questions that touch on demanding precision.

 What level of resto are you planning, and are you interested in getting
some fairly inexpensive Pontiac written manuals for your car?

 Joe
1979 10th Aniv 400/4spd
1980 Black SE 301NA
1980 Indy Turbo Pace 301T
1981 Turbo 301T
1981 Black SE 301T
1981 Daytona Pace 301T
www.301garage.com/forum/

jbirds

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Re: 79 301 air cleaner part I.D.
« Reply #2 on: October 13, 2013, 06:16:31 PM »
At approaching 60 I am not new to the fun in that I have owned a 66 goat,71,72,and 73 Formula ,77 TA and now the 79.The newer the cars get the more parts they have and the more"irritations"as it were.Senility has not set in yet so when I run across what seems should be obvious but is not then the internet is used when parts are not available at the local parts stores to find what I need.Help is always appreciated.This site is great,thanks

jjr

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Re: 79 301 air cleaner part I.D.
« Reply #3 on: October 14, 2013, 07:54:56 AM »

 In 1979, they were trying to pass ever increasing EPA testing. One of the big problems
was how rich the engine had to be for cold start. In addition to the crossover heating
the intake they took warm/hot air from the heat stove surrounding the exhaust manifold.

 The thing you are talking about is a thermal vacuum switch. Tonight when I get home
i will look up the exact name and probable source for a new one for you.

 That switch was a part of the system they called the thermostatic air cleaner, which
is shown in the Pontiac written service manual.

 Essentially, they wanted warm air at first, but then needed to cut it off as it would
reduce performance in a warmed up engine. You can run without this system unless
you live in the cooler latitudes. On a 30 degree F morning, you would miss not having
it working as drive-ability would be reduced until fully warmed up.

 Do you have the Pontiac written service manual? they are like ~ $15 USD on CD or
flash drive.

 Joe
1979 10th Aniv 400/4spd
1980 Black SE 301NA
1980 Indy Turbo Pace 301T
1981 Turbo 301T
1981 Black SE 301T
1981 Daytona Pace 301T
www.301garage.com/forum/

jbirds

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Re: 79 301 air cleaner part I.D.
« Reply #4 on: October 14, 2013, 09:03:48 AM »
Thanks again.I was able to repair the broken nozzle with a cut off piece from something else and super glued on.They mention the part inside the air cleaner that the vacuum line runs from but not the part on the side of the air cleaner.I have a standard General Motors manual.Thanks

Re: 79 301 air cleaner part I.D.
« Reply #4 on: October 14, 2013, 09:03:48 AM »

jjr

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Re: 79 301 air cleaner part I.D.
« Reply #5 on: October 14, 2013, 10:59:43 PM »
> I have a standard General Motors manual...

 Ah... a what?

 I don't mean to give you grief, but I've never heard of that.

 If you mean a Chiltons or Haynes manual, then aside from super
basic tune up stuff they are worthless.

 As I said, you need the PONTIAC written service manual.

 Joe
« Last Edit: October 15, 2013, 01:39:35 PM by jjr »
1979 10th Aniv 400/4spd
1980 Black SE 301NA
1980 Indy Turbo Pace 301T
1981 Turbo 301T
1981 Black SE 301T
1981 Daytona Pace 301T
www.301garage.com/forum/

jjr

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  • Posts: 1869
  • Fort Worth, Texas
      • http://www.301garage.com
Re: 79 301 air cleaner part I.D.
« Reply #6 on: October 15, 2013, 01:42:03 PM »

 Here's what the Pontiac written service manual would show for a 1979
301. Are we talking about the item passenger side, toward rear?



 Does it look like this?



 Joe
1979 10th Aniv 400/4spd
1980 Black SE 301NA
1980 Indy Turbo Pace 301T
1981 Turbo 301T
1981 Black SE 301T
1981 Daytona Pace 301T
www.301garage.com/forum/

Re: 79 301 air cleaner part I.D.
« Reply #6 on: October 15, 2013, 01:42:03 PM »
You can help support TAC!