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> What is this part?, Do members of the world run without it...any problems?
saigon71
post Jan 29 2012, 09:39 AM
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This piece of plastic was mounted on the rear edge of the floorpan at the engine bay on the drivers side. The one on the passenger side mush have fallen off due to rust.

Not looking for a concourse car here, but don't want to omit any pieces that will cause me problems down the road.

Anyone run their car without these plastic flaps?

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EdwardBlume
post Jan 29 2012, 09:45 AM
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Unlike my time here on the world site, the flaps are there for a reason.

If you are in colder climates, you are probably fine.
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nathansnathan
post Jan 29 2012, 10:25 AM
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I can see the flaps making a difference in cooling. With the bottom of the car being so flat, the air just goes right by. With those there, the turbulence slows the air down and moves it about along the cooling fins below the engine. I'm going to install some on my early car, actually. Seems like particularly on the freeway, when head temps are higher and the air is going by faster that these would come into play.
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Randal
post Jan 29 2012, 10:35 AM
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Think they were put there by the Porsche engineers to create air disturbance over the cylinders to enhance cylinder cooling. If they are not there, then the air just flows straight past the cylinders.

I run them on my race car.
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Cap'n Krusty
post Jan 29 2012, 11:08 AM
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QUOTE(saigon71 @ Jan 29 2012, 07:39 AM) *

This piece of plastic was mounted on the rear edge of the floorpan at the engine bay on the drivers side. The one on the passenger side mush have fallen off due to rust.

Not looking for a concourse car here, but don't want to omit any pieces that will cause me problems down the road.

Anyone run their car without these plastic flaps?


The pair of these parts introduces turbulence to the air flow under the car, aiding engine cooling. You should have them. The Cap'n
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hot_shoe914
post Jan 29 2012, 01:15 PM
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QUOTE
You should have them. The Cap'n

'nuff said.
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stugray
post Jan 29 2012, 01:37 PM
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Sorry, but I am on my 3rd 914, and I have never seen that part in my life...

If I hadnt read the responses from above, then I would have said it wasnt from a 914.
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MLedesma
post Jan 29 2012, 01:47 PM
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Early cars don't have them. My 71 and 72 don't, but my 74 does.
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IronHillRestorations
post Jan 29 2012, 02:17 PM
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It's a worthwhile retro fit to any early car.
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SirAndy
post Jan 29 2012, 03:37 PM
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QUOTE(9146986 @ Jan 29 2012, 12:17 PM) *
It's a worthwhile retro fit to any early car.

(IMG:style_emoticons/default/agree.gif)
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flash914
post Jan 29 2012, 04:05 PM
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I have a 70' how about someone putting a picture up with them inplace so that we can see how hard it would be to instrall them on our early cars? Thanks Gordon
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Tom_T
post Jan 29 2012, 04:10 PM
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QUOTE(Cap'n Krusty @ Jan 29 2012, 09:08 AM) *

QUOTE(saigon71 @ Jan 29 2012, 07:39 AM) *

This piece of plastic was mounted on the rear edge of the floorpan at the engine bay on the drivers side. The one on the passenger side mush have fallen off due to rust.

Not looking for a concourse car here, but don't want to omit any pieces that will cause me problems down the road.

Anyone run their car without these plastic flaps?


The pair of these parts introduces turbulence to the air flow under the car, aiding engine cooling. You should have them. The Cap'n

(IMG:style_emoticons/default/agree.gif) .... and in any part of the USA & elsewhere for that matter - just takes one hot summer day! (IMG:style_emoticons/default/sad.gif)

These air flaps/diverters were added in the 73 MY due to the engines running hotter with leaner mixtures & higher smog controls, as well as the 70-72 standing problems with hot egine bays causing vapor lock (fuel pump relocation under the fuel tank in F trunk for 75-76 MY was another "factory fix", as well as a service bulletin to relocate the 70-74 FP up under the steering rack at the front pan/firewall next to the tunnell access hole).
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Spoke
post Jan 29 2012, 04:28 PM
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Here's my 71 retrofitted with air dams.


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Eric_Shea
post Jan 29 2012, 04:43 PM
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I made sure they were on my build. They create a low pressure field under the engine allowing more air to be pulled through the grill.

(IMG:https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash2/163598_1750835736594_1409883264_1936232_6564102_n.jpg)
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Cap'n Krusty
post Jan 29 2012, 04:56 PM
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QUOTE(Tom_T @ Jan 29 2012, 02:10 PM) *

QUOTE(Cap'n Krusty @ Jan 29 2012, 09:08 AM) *

QUOTE(saigon71 @ Jan 29 2012, 07:39 AM) *

This piece of plastic was mounted on the rear edge of the floorpan at the engine bay on the drivers side. The one on the passenger side mush have fallen off due to rust.

Not looking for a concourse car here, but don't want to omit any pieces that will cause me problems down the road.

Anyone run their car without these plastic flaps?


The pair of these parts introduces turbulence to the air flow under the car, aiding engine cooling. You should have them. The Cap'n

(IMG:style_emoticons/default/agree.gif) .... and in any part of the USA & elsewhere for that matter - just takes one hot summer day! (IMG:style_emoticons/default/sad.gif)

These air flaps/diverters were added in the 73 MY due to the engines running hotter with leaner mixtures & higher smog controls, as well as the 70-72 standing problems with hot egine bays causing vapor lock (fuel pump relocation under the fuel tank in F trunk for 75-76 MY was another "factory fix", as well as a service bulletin to relocate the 70-74 FP up under the steering rack at the front pan/firewall next to the tunnell access hole).


I would be interested in seeing this "service bulletin'. I worked at a dealership and took all the available factory training classes through 1974, and I've never seen or heard of it. It's not in the TSB books I have, either.

The Cap'n
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saigon71
post Jan 29 2012, 06:51 PM
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Thanks for all the responses - great info! (IMG:style_emoticons/default/beerchug.gif)

Will be placing a WTB add for the passenger side. I hope I left enough of a lip on the rebuilt pan for bolts!
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ThePaintedMan
post Jan 29 2012, 06:56 PM
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QUOTE(saigon71 @ Jan 29 2012, 07:51 PM) *

Thanks for all the responses - great info! (IMG:style_emoticons/default/beerchug.gif)

Will be placing a WTB add for the passenger side. I hope I left enough of a lip on the rebuilt pan for bolts!


I think that Rich Dauenhauer has a couple for sale, FYI. I was looking at them myself. To echo everyone else, Porsche wouldn't have put anything on these cars that didn't belong!
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saigon71
post Jan 29 2012, 06:57 PM
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QUOTE(flash914 @ Jan 29 2012, 05:05 PM) *

I have a 70' how about someone putting a picture up with them inplace so that we can see how hard it would be to instrall them on our early cars? Thanks Gordon


The plastic air dam itself is threaded on my car. Find the parts, drill four holes on each side where the rear firewall meets the floorpan. Shouldn't be too bad if nothing is in the way. (IMG:style_emoticons/default/biggrin.gif)
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Eric_Shea
post Jan 29 2012, 07:53 PM
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QUOTE
I have a 70' how about someone putting a picture up with them inplace so that we can see how hard it would be to instrall them on our early cars?


3 M5x.8x10 with nuts, washers and lock washers per flap. Drill the rear edge of the floor pan where it extends into the engine bay.

Purdy simple actually.
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saigon71
post Feb 2 2012, 02:45 PM
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Have one on the way from a 914world member. Thanks for all the info. Measured the drivers side placement, drilled holes yesterday & mock fitted air dam on the passenger side:

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