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914World.com _ 914World Garage _ Front Brake Rotor Bearing Caps 1973

Posted by: Costa05 Nov 29 2017, 05:38 PM

Q. Do the front bearing caps (domes) have a rubber seal gasket that goes on first? If so what is the part number and where to find. seal only that is. Checked various suppliers with no luck.
Thanks in advance for any reply.
Rich

Posted by: Mikey914 Nov 29 2017, 05:47 PM

Found it no real information other than it exists. I do recall it now. It was basically an o ring.
Should be an ace hardware part

Posted by: 914Sixer Nov 29 2017, 07:46 PM

Yep, go to your local hardware store.

Posted by: Mikey914 Nov 29 2017, 07:57 PM

If anyone knows the size I'll bring in a crapton and make them available cheap..I can check tomorrow if no one knows.
Mark

Posted by: mepstein Nov 29 2017, 08:23 PM

I wouldn’t mind an O ring for the 911 front hub. Paying $2.50 for them gets old.

Posted by: mgphoto Nov 29 2017, 08:24 PM

only /4 use this 421.839.455, but the parts book has it part of the /6 assembly.
Absorbent foam rubber, used to pick up the grease slung passed the cap.
NLA years ago.

Posted by: jim_hoyland Nov 29 2017, 09:02 PM

How does that O-ring sit; in a groove, or ??

Posted by: Mikey914 Nov 29 2017, 09:06 PM

My recollection is that it was a standard rubber O ring. If it is other I can still do, just might as well make it the same or better. If I recall it just sat on the base of the cap to deter crap from getting in.

Posted by: mepstein Nov 29 2017, 09:20 PM

QUOTE(Mikey914 @ Nov 29 2017, 10:06 PM) *

My recollection is that it was a standard rubber O ring. If it is other I can still do, just might as well make it the same or better. If I recall it just sat on the base of the cap to deter crap from getting in.

Yep

Posted by: rgalla9146 Nov 29 2017, 09:46 PM

dubl

Posted by: rgalla9146 Nov 29 2017, 09:49 PM

It was not hard rubber.
I was softer .....and it had a seam.
Haven't seen one in years.
I fit behind the rim of the grease cap.

Posted by: mgphoto Nov 29 2017, 09:59 PM

QUOTE(jim_hoyland @ Nov 29 2017, 07:02 PM) *

How does that O-ring sit; in a groove, or ??

Squashed between cap and drum section of the brake disk.
Very soft material, I may have old used examples I kept for posterity.

Posted by: Mikey914 Nov 29 2017, 11:47 PM

Well I know a guy that makes rubber stuff.
Just curious if the new reproduction caps have the same ridge. I'm doubting it. But please post up some pics.
Mark

Posted by: Costa05 Nov 30 2017, 12:50 AM

QUOTE(mgphoto @ Nov 29 2017, 10:59 PM) *

QUOTE(jim_hoyland @ Nov 29 2017, 07:02 PM) *

How does that O-ring sit; in a groove, or ??

Squashed between cap and drum section of the brake disk.
Very soft material, I may have old used examples I kept for posterity.


Yep squashed like the ones I removed in question. Attached ImageSee pic. I was just curious if they were available. Moving on without them.


Posted by: Mikey914 Nov 30 2017, 12:19 PM

Can you measure the thickest part? I think these could be easily made.

Posted by: Costa05 Nov 30 2017, 02:06 PM

QUOTE(Mikey914 @ Nov 30 2017, 01:19 PM) *

Can you measure the thickest part? I think these could be easily made.


I will tonight when I get home. They are pretty ragged but I should be able to get it for you.

Posted by: Mikey914 Nov 30 2017, 02:31 PM

Thanks,
Just trying to determine the original thickness as best as possible.

Posted by: 11tenths Nov 30 2017, 04:14 PM

Wow, never knew these existed. Maybe it'll help make removal of
those caps a little easier.

Posted by: Costa05 Nov 30 2017, 09:48 PM

QUOTE(Costa05 @ Nov 30 2017, 03:06 PM) *

QUOTE(Mikey914 @ Nov 30 2017, 01:19 PM) *

Can you measure the thickest part? I think these could be easily made.


I will tonight when I get home. They are pretty ragged but I should be able to get it for you.


3 mm would be a good guess. It is kind of a foamy rubber material if that matters. I would be more than happy to send them to you for your archival R & D division. biggrin.gif. Headed to the trash otherwise. beerchug.gif

Attached Image

Posted by: mgphoto Dec 11 2017, 05:07 PM

Ok found mine, 3 old ones and a new one that broke while trying to fit it, old stock adhesive gave up.

4 mm cross section 153 mm long, it is made of foam rubber with a smooth surface, older ones have grease residue. New is smooth and clean.



Attached Image

Posted by: Mikey914 Dec 12 2017, 02:43 AM

Thanks,
I'll get these going

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