Front trunk lid rubber buffer stops Options

[bkrantz]

This thread is getting racy, with talk about nipples and things hanging down underneath. (IMG:style_emoticons/default/w00t.gif)

[bbrock]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

[wonkipop]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

there are two.
they are venturi tubes.
when the car is moving, neg air pressure drains any moisture out of the spare wheel well.
my guess is that the idea behind it is to drain melted snow out of the well if you change tyres in winter, ...... something like that. i mean what else would cause water to accumulate in the spare wheel well. the suction is not created by them bending backwards but by the slit aperture.

the tubes are i believe still available today from porsche, they drained the headlight buckets on a 911. and they used them on something else too which i forget.

you might be right about them not being in parts diagram. my mechanic recognized what they were on mine when we had it up on the hoist. i had to glue one of them up as it was starting to crack after all this time. but both were still there.

[mepstein]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

I believe 914 rubber carries them

there are two.
they are venturi tubes.
when the car is moving, neg air pressure drains any moisture out of the spare wheel well.
my guess is that the idea behind it is to drain melted snow out of the well if you change tyres in winter, ...... something like that. i mean what else would cause water to accumulate in the spare wheel well.

the tubes are still available today rom porsche, they drained the headlight buckets on a 911.

you might be right about them not being in parts diagram. my mechanic recognized what they were on mine when we had it up on the hoist. i had to glue one of them up as it was starting to crack after all this time. but both were still there.

[mepstein]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

I believe 914 rubber carries them

there are two.
they are venturi tubes.
when the car is moving, neg air pressure drains any moisture out of the spare wheel well.
my guess is that the idea behind it is to drain melted snow out of the well if you change tyres in winter, ...... something like that. i mean what else would cause water to accumulate in the spare wheel well.

the tubes are still available today rom porsche, they drained the headlight buckets on a 911.

you might be right about them not being in parts diagram. my mechanic recognized what they were on mine when we had it up on the hoist. i had to glue one of them up as it was starting to crack after all this time. but both were still there.

I believe 914rubber also has them

[wonkipop]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

I believe 914 rubber carries them

there are two.
they are venturi tubes.
when the car is moving, neg air pressure drains any moisture out of the spare wheel well.
my guess is that the idea behind it is to drain melted snow out of the well if you change tyres in winter, ...... something like that. i mean what else would cause water to accumulate in the spare wheel well.

the tubes are still available today rom porsche, they drained the headlight buckets on a 911.

you might be right about them not being in parts diagram. my mechanic recognized what they were on mine when we had it up on the hoist. i had to glue one of them up as it was starting to crack after all this time. but both were still there.

I believe 914rubber also has them

yes its funny what you can get and from who.
porsche buy them from 914 rubber and then sell them on to dumbo australians?
if you are stoopid enough to rebuild the dopey spare tyre windscreen washer system, all the back flow valves for the rubber tubes to the washers you can still buy direct from porsche. yet serious sh%t you need,......like um, ........injectors its a shrug of the shoulders.

[windforfun]

My "73 has only two drain tubes which exit the bottom of the car just behind the steering rack cover. One is for the air box (internal condensation) & the other is for the gas tank filler cap apron.

(IMG:style_emoticons/default/beer3.gif)

These little guys
(IMG:http://www.914world.com/bbs2/uploads_offsite/c767170.r70.cf2.rackcdn.com-20845-1623382507.1.jpg)

It's unclear whether there are supposed to be 1 or 2 under the frunk pan. There are two identical size holes so I installed 2. It's possible one of the holes should have a plug instead. Like many of these little rubber parts, they seem to be missing from the PET. Another bit of German engineering being design to bend backward as the car moves down the road and create suction in the tube to suck the water out of the frunk.

Interesting... Thanks for the education.

(IMG:style_emoticons/default/idea.gif)

[bbrock]

there are two.
they are venturi tubes.
when the car is moving, neg air pressure drains any moisture out of the spare wheel well.
my guess is that the idea behind it is to drain melted snow out of the well if you change tyres in winter, ...... something like that. i mean what else would cause water to accumulate in the spare wheel well. the suction is not created by them bending backwards but by the slit aperture.

the tubes are i believe still available today from porsche, they drained the headlight buckets on a 911. and they used them on something else too which i forget.

you might be right about them not being in parts diagram. my mechanic recognized what they were on mine when we had it up on the hoist. i had to glue one of them up as it was starting to crack after all this time. but both were still there.

If I'm not mistaken, I believe they work on combination Bernoulli's Principle and venturi effect. I am probably over thinking but thought the bending (which they do when the car is at speed) would place the open slit at the trailing edge of an air foil created by the bending and perhaps maximize the suction of the air blowing by. Plus, fresh air blowing across the dangly bits probably feels good to the car.

Being an Aussie, you are forgiven for not knowing how else moisture gets in the frunk, but anyone who has lived in a cold and humid climate does. Condensation and frost get on every surface and will accumulate water in places like the frunk in surprising quantity. Luckily the cars were designed by Germans who know about such things (IMG:style_emoticons/default/beer.gif)

I got mine from 914Rubber.

[Mikey914]

Thanks for your support. We have found many of these little parts that are needed and continue to make more. Have a few other new small parts that will be done next week!

[Jamie]

Thanks for your support. We have found many of these little parts that are needed and continue to make more. Have a few other new small parts that will be done next week!

And be sure to install with the slit parallel to the steering rack so that they can properly suck out the moisture while driving! (IMG:style_emoticons/default/aktion035.gif)