Porsche 914 - Rear Disc Brakes

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Richard914
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Joined: Mon Jul 02, 2018 12:53 pm

Porsche 914 - Rear Disc Brakes

Post by Richard914 » Mon Jul 02, 2018 1:14 pm

Hi,

I'm recommissioning a 914 (2.0 lt 1975)that I've had for 20+ years and I'm new to the forum.

I've just had some new alloy wheels fitted today and the garage said something was missing from the rear wheel hub.

I've attached a picture of the wheel hub. I've been told it is missing is something the alloy can rest on (a rim?) so that the load is not just placed on the 4 wheel bolts.

I've done some research online and have seen a few pictures of the rear brake hub and they all look very similar to mine. Does anybody know if I'm missing anything or were the wheels only attached by the bolts?

I hope that all makes sense.

Thanks in advance.

Kind regards,

Richard
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H2OSB
Posts: 529
Joined: Mon Aug 21, 2000 2:01 am

Re: Porsche 914 - Rear Disc Brakes

Post by H2OSB » Mon Jul 02, 2018 4:48 pm

They are incorrect. Your set up is typical 914. You MIGHT be able to get a hub-centric ring for either side to help center the wheel, but that doesn't mean the arrangement becomes hub-centric. It would ONLY be for centering. That said, it wasn't done by the factory, so is unnecessary. Porsche uses ball seat lug nuts/bolts which centers each stud/lug bolt in it's individual hole

If you do a google search of images of 914 rear brakes, you'll see yours is typical stock 4 lug. Even the 914/6 5 lug rear brakes sits on the hub the same way.

H2OSB

Richard914
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Joined: Mon Jul 02, 2018 12:53 pm

Re: Porsche 914 - Rear Disc Brakes

Post by Richard914 » Tue Jul 03, 2018 2:53 am

Hi,

Thank you very much for your reply, it's really put my mind at rest and I can see from googling that they are lug-centric hubs. Interestingly, the front hubs are hub-centric, which is what I think confused the fitter.

I can now drive and enjoy the car without worrying!

Thanks again, it's much appreciated.

Kind regards,

Richard

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raygreenwood
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Re: Porsche 914 - Rear Disc Brakes

Post by raygreenwood » Wed Jul 04, 2018 6:38 pm

The front rotors in late 914.....got their rotors and calipers from the VW 412 cars....and they are not "hub centric" for your convenience.

That center ring as well as the thicker rotor....were designed to reduce rotor flex during turns....and hence allow getting rid of the earlier caliper with the center guide pin and clutch. The earlier rotors had no center ring. The ring is just there for rotor strength. Ray

Richard914
Posts: 7
Joined: Mon Jul 02, 2018 12:53 pm

Re: Porsche 914 - Rear Disc Brakes

Post by Richard914 » Thu Jul 05, 2018 2:35 am

Hi Ray, thank you for your reply and the information about the front rotors. That makes sense to me. Kind regards, Richard

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