Why you should backdate your heat on a 3.2

[Mr. Merk]

Are those adapters still available? I'd like to do this on my Carrera which currently has a dead blower.

[livetopedal]

Originally Posted by Mr. Merk

Are those adapters still available? I'd like to do this on my Carrera which currently has a dead blower.

Try this Mr. Merk:
Not quite a heat backdate for 3.2 -- very easy
Part numbers are listed somewhere in the post.
Cheers!

[911tracker85]

I did this and am about to revert to the original blower. why? returning the car to stock from having been a DE/street. now DE a modified 951.

if I recall there is already a block off plate on the pass side on my 85. install backdate duct on the drivers side and duct to the heat exchangers.

interested?

[Mr. Merk]

If I understand correctly all I'll need is the duct and hose pictured?

Am I missing anything?

[livetopedal]

You should also solder a jumper wire across the reed switch in the heater relay so the footwell fans still work.

[Reuben911]

Hi

I removed my heat exchangers for headers, can I still get heat (1984 911 3.2) ?

Thansk

[GH85Carrera]

I have to admit that the engine compartment does look better without the heater blower.

HOWEVER just recently we drove over to Arkansas for Porsche Palooza. Fantastic roads, best on the planet, and good friends. On Friday it was 18 degrees that morning. Burr.

I really love the heater in my 85 911, especially when it is cold and I am actually driving my car. I have driven it to Savanna, GA when the heat index was 135. And the AC kept me comfortable.

So go ahead and strip out all that "useless junk" on your car. It is your car, do what you please. My car will remain with stock heaters, and the upgraded AC of Griffith's technologies. I will continue to actually drive my car on road trip and see the country. I plan to drive my 911 in all the lower 48 continental states. I have been to Canada and over 42 states so far. In comfort.

[tratza]

Originally Posted by 84CAB

Left heater duct only needed on Carreras. Thom (widebody911) sells them rennlight.com It takes about thirty minutes to do the install. Very straightforward, only requires removing the heater blower and ducting on the left side and bolting up the new duct. The distributor cap has to be removed to access one of the bolts.

The distributor didn't have to be removed to get at the last bolt on mine a 1987 Targa. I used the Pelican part on the left side which worked great.

[juanbenae]

Originally Posted by livetopedal

You should also solder a jumper wire across the reed switch in the heater relay so the footwell fans still work.

what are those?

My heat backdated engine compartment:

Originally Posted by GH85Carrera

I have to admit that the engine compartment does look better without the heater blower.

HOWEVER just recently we drove over to Arkansas for Porsche Palooza. Fantastic roads, best on the planet, and good friends. On Friday it was 18 degrees that morning. Burr.

I really love the heater in my 85 911, especially when it is cold and I am actually driving my car. I have driven it to Savanna, GA when the heat index was 135. And the AC kept me comfortable.

So go ahead and strip out all that "useless junk" on your car. It is your car, do what you please. My car will remain with stock heaters, and the upgraded AC of Griffith's technologies. I will continue to actually drive my car on rad trip and see the country. I plan to drive my 911 in all the lower 48 continental states. I have been to Canada and over 42 states so far. In comfort.

Awesome goal! I don't think I'll be able to do that with my car, but I have taken long trips in previous 3.2s and was glad to have working heat and AC.

In my current car, smene had already removed the blower from the big plastic heat manifold. The heat still worked fine, though, so I guess the footbox heaters were enough. Since the manifold was doing nothing, I pulled it out. Have not yet installed the hose connecting the heat exchangers to the shroud vent, but that will be happening soon, given the coming of winter.

After that I plan on installing electric AC. Like you, Glen, I do like those creature comforts.

[Autoban]

I took the AC out of my '86 Cab since I drive it open almost all of the time in the summer, but I really like the efficiency of the stock heat set up. It is not that difficult to maintain. I drive the car when the temperature is below freezing and it warms up quicker than any of my water cooled VWs. With the blower in the back, the footwell blowers and the ones in the dash, there is enough air to get into the cabin to keep it warm even in traffic with low engine RPM.

Juergen

[ejp]

Originally Posted by madcorgi

My heat backdated engine compartment:

Sorry to thread-jack, but your fan and shroud look fantastic. Is it just newly refinished or did you treat it/both?

Thanks

Originally Posted by ejp

Sorry to thread-jack, but your fan and shroud look fantastic. Is it just newly refinished or did you treat it/both?

Thanks

Thank you. It's powdercoated in two different shades of gray for contrast.

[911pcars]

Tidying up the engine compartment is one thing. True backdating requires more pieces and add'l effort. Here are the pieces needed. Depending on your MY engine, some parts you may already have. Download an early 911 parts catalog for part numbers ('69-'72 or so).

Sheet metal pieces before powder coating. Disregard the engine and muffler mount brackets. Pieces marked with an X are early 911. The unmarked pieces happen to be existing 3.2 sheet metal.


Sherwood

[Reuben911]

Originally Posted by Reuben911

Hi

I removed my heat exchangers for headers, can I still get heat (1984 911 3.2) ?

Thansk

Any ideas

[911pcars]

Originally Posted by Reuben911

Any ideas

A couple of options:

Electric seat warmers. e.g.:
https://www.ebay.com/itm/Carbon-Fiber-Universal-Heated-Seat-Heater-Kit-Car-Cushion-Warmer-Round-Switch/153143124561?hash=item23a80aa251:m:mXu1uUTKrr6ubLU 1RbV21tQ:rk:206f:0
or

PTC heating and/or cooling element, e.g.:
https://www.google.com/search?q=what+vehicles+have+PTC+seat+heaters&client=firefox-b-1-ab&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwiUwJ-O0_HeAhXbJDQIHTDSC78QsAR6BAgEEAE&biw=1217&bih=1048

(no affiliation or endorsement)

Sherwood

[Canada Kev]

Originally Posted by 911pcars

A couple of options:

Electric seat warmers. e.g.:
https://www.ebay.com/itm/Carbon-Fiber-Universal-Heated-Seat-Heater-Kit-Car-Cushion-Warmer-Round-Switch/153143124561?hash=item23a80aa251:m:mXu1uUTKrr6ubLU 1RbV21tQ:rk:206f:0
or

PTC heating and/or cooling element, e.g.:
https://www.google.com/search?q=what+vehicles+have+PTC+seat+heaters&client=firefox-b-1-ab&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwiUwJ-O0_HeAhXbJDQIHTDSC78QsAR6BAgEEAE&biw=1217&bih=1048

(no affiliation or endorsement)

Sherwood

Webasto or Eberspacher gas heater will roast your socks off.

[gtc]

Originally Posted by Reuben911

Any ideas

Use the engine tin pieces posted above and perform the relay modification.
If you have B&B headers, they should work with the existing heater crossover duct, so you will not require the tin.