Front caliper identification - 911E 1973

[aston]

Can anyone help me identify these calipers please? They came with my restoration project but I don't think they are original to the car. I've already discovered that the front struts are from a 1989 car and the spacing on the calipers is 3.5". The car had been used for rallying so I think the fronts might have been uprated. I intend refitting the later struts and upgrading the calipers but don't want to buy more calipers if the ones I've got are an improvement over the standard set-up.




Thanks.

[Richi996]

Check out the link ...

http://forums.pelicanparts.com/porsche- ... stion.html

Cheers Rich

[davep]

Those are fairly early 911S aluminum calipers, probably 1969 to 1970. Later versions had a recessed circle on the bridges, then an X in those circles. I think from late 1972 they morphed into the broad snout version. The broad snout version was used on the first turbos, and similar calipers were used on the 908 as well. So you are in good company.

[stretch]

I think they are " Versuch " experimental calipers. You can see the V, and 68 year stamp on one of the calipers.

[aston]

Thanks for all the replies..

I want to upgrade from what I thought were standard 911E calipers, so are these better or should I get hold of some SC items and sell these to so one who wants them for an earlier car?

Thanks.

[hot66]

if you're wanting to upgrade & you have 3.5" , fit 3.2 callipers

[Darren65]

I would have thought the calipers you have are super desirable and potentially quite valuable to the right person…..certainly on the Early S Registry.

Don't know about later SC brakes but I went for 72/73 alloy 'S' calipers, I believe these were standard fit on Sporto E's and obviously all 2.4 S's….they do a pretty good job and look right. They come up for sale now and again.

Cheers,

[davep]

I think they are " Versuch " experimental calipers. You can see the V, and 68 year stamp on one of the calipers.

I noticed the V68 as well. However they appear to be normal 911S calipers. They are not machined in many critical areas as my 908 Versuch was. One extra thing to check is the piston dust boot. If you can remove a dust boot and show a picture of where it sits, then that would be useful.
Dave

[aston]

Hi Dave...a few more pictures which might help further identification?

[davep]

That is interesting. The bore, where the dust seal sits, appears to be a step bore where the dust boot is a friction fit on the outside of the bore. Normally the bore does not have a step, just the internal groove where the piston seal resides. Can you pick the dust seal remains out of the bore and get another photo please.

[aston]

More pics of bore with seal removed...

[davep]

Yes, this has the step bore; the only one I have seen other than the one I had as seen here:
http://forums.pelicanparts.com/porsche- ... liper.html
http://www.early911sregistry.org/forums ... -Brainiacs
http://www.early911sregistry.org/forums ... al-Caliper
No mention of the step bore because I did not discover the fact until later. So this is another in the line of transitions from the Girling 910 caliper to the 69 911S caliper.