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Disc Brake Calipers & M471 PACKAGE

 
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Vic  



Joined: 05 Jan 2011
Posts: 42
Location: australia

PostPosted: Sun Apr 24, 2011 4:46 pm    Post subject: Disc Brake Calipers & M471 PACKAGE Reply with quote

Gidday all, i just found the brilliant article by Peter on brake caliper overhaul from a couple of years back and guess what , i'm in the middle of pulling my calipers apart and have found some pitting on both the bore of caliper cylinder and the piston itself ! I took a punt a while ago and bought the seal kits for all four too. Considering the cost to get a replacement caliper assembly sent to Australia, can anyone recommend where to get a new caliper cylinder and piston as i reckon these are all i need , my car is an 1980 924 turbo by the way. Another thing, could someone please tell me if i have the M471 package ? My car has 5 stud wheels,ATE Discs/calipers ,wheel spacers on rear, red koni shocks, i think green dots on springs, electric windows and mirrors,part leather seats,5 speed dog leg box, I'm asking this as i'm now going to get new calipers and find this m471 package mentioned every where i look, after googling found an article on 79 924 turbos with m471 package which seemed to fit my car, it is Petrol Blue in color. All very interesting, cheers.
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Fifty50Plus  



Joined: 28 Feb 2008
Posts: 1422
Location: Washington DC area

PostPosted: Tue Apr 26, 2011 12:15 am    Post subject: Reply with quote

I've got a '79 with the M471. An easy way to check to see if you have the LSD is to jack up the rear and rotate one rear wheel by hand. If the other rear wheel turns the same direction you have the LSD. If that wheel turns the opposite direction, you have an open dif.
Chuck
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA
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9xx  



Joined: 18 Jun 2006
Posts: 627
Location: Jarvenpaa, Finland

PostPosted: Tue Apr 26, 2011 12:36 am    Post subject: Re: Disc Brake Calipers & M471 PACKAGE Reply with quote

Vic wrote:
...my car is an 1980 924 turbo by the way. Another thing, could someone please tell me if i have the M471 package ? My car has 5 stud wheels,ATE Discs/calipers ,wheel spacers on rear, red koni shocks, i think green dots on springs, electric windows and mirrors,part leather seats,5 speed dog leg box, I'm asking this as i'm now going to get new calipers and find this m471 package mentioned every where i look, after googling found an article on 79 924 turbos with m471 package which seemed to fit my car, it is Petrol Blue in color. All very interesting, cheers.


5 stud wheels/brakes and dog leg gearbox were standard equipment on euro/row cars throughout the years. It wasn't necessary to order M471 package in order to get vented discs etc. Your car could possibly be just normal version but I'm not saying it doesn't have the M471 package.

Just get normal 924 turbo calipers or early 944 calipers. They are the same.
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Mikko

All gone: 931 '82 Alpine White, original option "220" G31 with LSD + 3 x 944
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Khal  



Joined: 26 Sep 2003
Posts: 4872
Location: Sunny and lovely interior BC, Canada

PostPosted: Tue Apr 26, 2011 2:04 am    Post subject: Re: Disc Brake Calipers & M471 PACKAGE Reply with quote

9xx wrote:
5 stud wheels/brakes and dog leg gearbox were standard equipment on euro/row cars throughout the years. It wasn't necessary to order M471 package in order to get vented discs etc.


+1. All Oz-delivered cars are spec'd this way.

You could try aPorschaPart.
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Vic  



Joined: 05 Jan 2011
Posts: 42
Location: australia

PostPosted: Tue Apr 26, 2011 8:53 am    Post subject: Reply with quote

Thanks everyone
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Tas931  



Joined: 08 Apr 2010
Posts: 142
Location: Tasmania, Australia

PostPosted: Thu May 05, 2011 9:28 pm    Post subject: Reply with quote

instead of rebuilding those i got given a set of 4 spot vovo's for the front so rebuilt those instead cheap as chips and more stopping power, they bolt right on. Same for me, 1980 924 turbo
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Vic  



Joined: 05 Jan 2011
Posts: 42
Location: australia

PostPosted: Fri May 06, 2011 1:52 pm    Post subject: Reply with quote

Thanks Tas, appreciate the tip mate, didn't know that . I've ordered new units now from America so i'll be going with that, it's unreal in Australia when you mention Porsche to any parts supplier they go all funny on you, and you go on the net and there is practically any part you need ! Thanks
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ideola  



Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI

PostPosted: Sat May 07, 2011 5:27 am    Post subject: Reply with quote

According to our models & history section, the M471 package consisted of .8" wider track, brakes, sway bars, stiffer springs (rated with two green dots) and (red) Koni shock absorbers.

Additional digging reveals that M471 package should have the Girling, 928 355 011 04 master cylinder; the Girling front brake calipers (477 615 109 [L] & 477 615 110 [R]); rear brake calipers (944 352 429 00 [L] & 944 352 430 00 [R]); additionally, the 160# front springs denoted by two green dots; the 23mm front sway bar; and the optional 14mm rear sway bar, along with the aforementioned Koni reds.

http://www.924.org/models/924_S_model.htm
http://www.924.org/techsection/SuspensionPreparation.htm
http://www.924.org/parts/parts.htm
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Vic  



Joined: 05 Jan 2011
Posts: 42
Location: australia

PostPosted: Sat May 07, 2011 9:27 am    Post subject: Reply with quote

Thanks for the info Ideola, I reckon that's what mine is as it seems to have all what you say, the two green dots on front springs had my interest from the start with red konis, the brake master cylinder on mine had two sender units for brake lights and a fluid level sender on cap, was this original ? The calipers were interesting as the right front had an Audi stamp but none of the other 3 as they had ATE on them, the more I tinker with this car the more I love it ! Cheers mate.
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