The Most Comprehensive Free Online Reference for Packard Owners
Become a member of Packard Motor Car Information, right now! (it's free)
Login
Username:

Password:

remember me

Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who's Online
37 user(s) are online (32 user(s) are browsing Packard Forums)

Members: 3
Guests: 34

BDeB, pckrd320, 1956 EXEC, more...





'38 V12 heads and heater outlets.
Home away from home
Joined:
2018/8/18 3:35
From Berkeley Lake, GA, USA
Posts: 134
I have a set of cast iron heads. The outlet valve to the heater is attached to the right water inlet.

I also have a set of HC aluminum heads and they have a port near the right rear of the engine, that looks to be for that application.

I did some visual research and it looks like earlier (pre '38) cars have the heater valve off of this port.

My question is, for the '30's V12's were all the aluminum heads the same, except for compression ratio?

Also when did the factory start producing the cast iron ones?

Posted on: 2019/10/31 11:40
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Forum Ambassador
Joined:
2007/3/14 16:01
From New Jersey
Posts: 16126
Cast iron cylinder heads date back to the introduction of the Twelve as the Twin Six in 1932.

Sorry, can't help with the other questions.

Posted on: 2019/10/31 18:41
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Home away from home
Joined:
2018/8/18 3:35
From Berkeley Lake, GA, USA
Posts: 134
Thanks for the response. It is curious that the production of cast iron and aluminum heads were parallel. Begs the question, WHY?

Posted on: 2019/10/31 22:01
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Home away from home
Joined:
2007/10/28 7:49
Posts: 2382
Packard was having cooling problems with that engine from the introduction. The project was on a rush schedule. Higher compression ratios increase the burn rate which reduces the heat load on the cooling system.

A lot of those - probably most - of those cast iron heads are aftermarket.

Posted on: 2019/11/1 3:27
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Home away from home
Joined:
2018/8/18 3:35
From Berkeley Lake, GA, USA
Posts: 134
Tim,

My cast iron heads were put on in the early '70's I think. I haven't looked for any markings on them.

Thanks for the help.

Bill

Posted on: 2019/11/1 4:51
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Home away from home
Joined:
2018/8/18 3:35
From Berkeley Lake, GA, USA
Posts: 134
Here are the combustion chamber difference between the HC aluminum and the cast iron heads.

Attach file:



jpg  Packard heads.jpg (353.14 KB)
181435_5dbc2b288d9be.jpg 1632X918 px

Posted on: 2019/11/1 5:55
Transfer the post to other applications Transfer


Re: '38 V12 heads and heater outlets.
Home away from home
Joined:
2018/8/18 3:35
From Berkeley Lake, GA, USA
Posts: 134
Here is the heater outlet comparison. On the right is the cast iron with the tap off the water inlet. The bule pen is in the port on the aluminum head.

Attach file:



jpg  Packard heads5.jpg (304.66 KB)
181435_5dbc2be29325e.jpg 1632X918 px

Posted on: 2019/11/1 5:59
Transfer the post to other applications Transfer







[Advanced Search]


Search
Recent Photos
no title (2020/7/6)
no title
July 4th 2020 Parade Packard (2020/7/4)
July 4th 2020 Parade Packard
1947 packard (2020/7/2)
1947 packard
DSC05939.JPG (2020/6/27)
DSC05939.JPG
Anton Kneer (2020/6/13)
Anton Kneer
Random Photo
1949 Packard convertible, top folded, female behind wheel
Helping Out
PackardInfo is supported and funded by user donations. If you would to help out by either donating content, or funds to help with the upkeep and hosting of this site please EMAIL ME or click on the donate button.