fresh air blower

nfotouhi1 · 12-31-2020, 11:25 AM

I am rebuilding the fresh air blower unit on my 1987 Porsche 911 carrera. I would like to rebuilt the flaps inside the housing that open and close and control the air flow. The rubber seals are completely worn (see pics). Can they be purchased? Thanks

JSA993 · 12-31-2020, 12:12 PM

I could not find them in the PET when I refurbished my unit last year. I ended up making a pair out of an old mouse pad.

Jeff

Kidasters · Kidasters's Garage

I did something similar a few years ago. I found some on E-bay that someone had made. The "mouse pad" foam is a good idea if you have something to cut the circle well.

nfotouhi1 · 01-02-2021, 06:14 AM

Thanks very much. I will give the mouse pad a try. Clever.

nfotouhi1 · 01-09-2021, 11:41 AM

For those who are interested using black foam works perfectly to restore the flaps. I am attaching the picture.
Thanks again for the suggestion.

911obgyn · 911obgyn's Garage

Neoprene wetsuit material is what i have used

superninety · 02-06-2021, 07:43 PM

What thickness neoprene or foam and where did you locate it?

I tried a sheet of rubber that is 1/8" thick, but that is too thick with that material

Thanks !

creaturecat · 02-07-2021, 05:41 AM

i repurposed a piece of the black foam - traditionally used to line the bottom of a tool box tray.
worked perfectly.

sparkysvega · sparkysvega's Garage

I bought some from 914 rubber.com they are the same . https://914rubber.com/flapper-valve-seals-in-blower-housing-1

superninety · 06:53 AM

I used 1/16" rubber sheeting found in the local hardware store plumbing department to cut the circles. I wish it were black, but ....

Seals very well and will last far longer than foam.

https://photos.app.goo.gl/rjmRhZEqePosQpky8