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Changing rear drums to discs
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Codyboy  



Joined: 27 Apr 2005
Posts: 74
Location: Edmonton Alberta

PostPosted: Mon Jun 06, 2005 3:51 pm    Post subject: Changing rear drums to discs Reply with quote

On my 85 924 euro i wanna change the rear drums to discs while still keeping same bolt pattern since i know theres the 944 conversion but i dont want that since i just spent over a $1000 in rims. Is it possible to put 924s rotors and what not on it? or was 4 wheel discs a option back then?
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gohim  



Joined: 02 Nov 2002
Posts: 4459
Location: Rialto, CA

PostPosted: Mon Jun 06, 2005 5:51 pm    Post subject: Reply with quote

All of the four wheel disc brake 4-cylinder 924/944 family of cars have 5-bolt wheels.

You are out of luck is you expect to keep you four bolt wheels and move to a Porsche four wheel disc brake solution.

This is why I recommend doing the conversion to four wheel disc brakes, before buying new wheels. Besides the improved braking performance, and reduced maintenance schedule, you get the added bonus or the Porsche 5-bolt pattern which will get you many more available wheel patterns.

The best advise I can give you is to contact the some of the other members of this message board who have the disc/drum brake setup who are not willing to listen, and are getting ready to lay down the bucks for new four-bolt wheels and tires. Make one of them a deal to minimize your loss the the four-bolt stuff.
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Peter_in_AU  



Joined: 29 Jul 2001
Posts: 2742
Location: Sydney, Australia

PostPosted: Mon Jun 06, 2005 6:18 pm    Post subject: Reply with quote

you could do a bit of study and see what the VW Beetle (original beetle) do for rear disks. I've seen a few rear disk kits for beetles advertised.
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gohim  



Joined: 02 Nov 2002
Posts: 4459
Location: Rialto, CA

PostPosted: Mon Jun 06, 2005 6:38 pm    Post subject: Reply with quote

At one time the kits for Bugs used calipers for Porsche 914s. This was one of the reasons that 914s were on the Top 10 Theft List for several years.

Another part stolen for use on Bugs were the Fuch forged 15" four bolt wheels which weighed less than 10lbs each (and cost of $600 each at the time.
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Codyboy  



Joined: 27 Apr 2005
Posts: 74
Location: Edmonton Alberta

PostPosted: Tue Jun 07, 2005 3:48 am    Post subject: Reply with quote

Before my dad got the rims redone for me i didnt know about the conversion But i guess unless i go get custom rotors i will have to stick with drums
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Andrew NZ  



Joined: 22 Jun 2004
Posts: 744
Location: New Zealand

PostPosted: Tue Jun 07, 2005 9:53 am    Post subject: Reply with quote

I've converted to Peugeot 405 disks on the back of mine. I machined the drums down so the disc would slide over the top and modified the backing plates to mount the calipers. Even the handbrake cable worked with a simple spacer!
I have pictures if anyone can host them for me?
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1977 RX924 rally car
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Codyboy  



Joined: 27 Apr 2005
Posts: 74
Location: Edmonton Alberta

PostPosted: Tue Jun 07, 2005 1:09 pm    Post subject: Reply with quote

I could put them up on my site and send u link? If u want. I would be really interested in seeing them
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endwrench  



Joined: 07 Dec 2002
Posts: 1631
Location: Victor, Montana

PostPosted: Wed Jun 08, 2005 3:02 am    Post subject: Reply with quote

If you e-mail them to me I will post them here. I would like to see that.

Todd
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Raceboy  



Joined: 01 Mar 2004
Posts: 2321
Location: Estonia, Europe

PostPosted: Wed Jun 08, 2005 3:23 am    Post subject: Reply with quote

I'm planning to do this conversion with my wife's NA for a couple of months now, haven't got the time yet. I was planning to use some Audi rear discs and calipers, cut the drums to just have a disc with bolt holes and mount the Audi discs to them. Then obviously fabricate the caliper mounts too. But if someone's got a working solution, I'm all ears and eyes
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Andrew NZ  



Joined: 22 Jun 2004
Posts: 744
Location: New Zealand

PostPosted: Wed Jun 08, 2005 10:55 am    Post subject: Reply with quote

Thanks Todd, I've sent you an Email.
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Andrew NZ  



Joined: 22 Jun 2004
Posts: 744
Location: New Zealand

PostPosted: Wed Jun 08, 2005 11:00 am    Post subject: Reply with quote

Raceboy wrote:
I'm planning to do this conversion with my wife's NA for a couple of months now, haven't got the time yet. I was planning to use some Audi rear discs and calipers, cut the drums to just have a disc with bolt holes and mount the Audi discs to them. Then obviously fabricate the caliper mounts too. But if someone's got a working solution, I'm all ears and eyes


I loked at the audi ones but from memory the Peugeot ones had a better off set, but I think they'd still do the same job. The handbrake was so easy to rig up on the Peugeot ones that it would be worth looking for those first. I'll take a picture of the handbrake linkage after I get back from the Targa Tauranga next week.
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endwrench  



Joined: 07 Dec 2002
Posts: 1631
Location: Victor, Montana

PostPosted: Wed Jun 08, 2005 4:41 pm    Post subject: Reply with quote

I worked late putting another trans in my 924 (nearly midnight) so I'll post those in the morning. They look good.

Todd
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endwrench  



Joined: 07 Dec 2002
Posts: 1631
Location: Victor, Montana

PostPosted: Thu Jun 09, 2005 3:35 am    Post subject: Reply with quote

Now my stupid host site is down! I will post when it is up. If someone else would like to give it a go I can foward the pictures to them.

Todd
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endwrench  



Joined: 07 Dec 2002
Posts: 1631
Location: Victor, Montana

PostPosted: Thu Jun 09, 2005 5:04 am    Post subject: Reply with quote







Thanks to ImageShack for Free Image Hosting


Last edited by endwrench on Fri Jun 10, 2005 2:03 am; edited 1 time in total
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macBdog  



Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia

PostPosted: Thu Jun 09, 2005 10:41 am    Post subject: Reply with quote

Ok I am officially confused by those pics. Four bolt discs... with flexible hose to the caliper... caliper hanger attached to the backing plate... shock with a spring over it...

Looks nothing like my car!
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