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Registered
Join Date: Mar 2007
Location: Cheshire, England
Posts: 49
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944S Front Caliper Replacement - VW/Audi Two Pot?
I have a 1988 944S and I am fed up with the single pot, floating caliper front brakes. When the calipers have been freed and lubricated, the brakes are adequate, but after a while the calipers seize up and the braking performance drops off.
I don't want to be under the car every month freeing off the calipers - life's too short - and I don't want to go down the big-red four pot route because it's too expensive. So it's a long shot BUT: I bet Porsche didn't have the calipers specially made for the 944S: more likely they raided the VW or Audi parts bin. What I am hoping is that there might be a VW or Audi two pot caliper that would be a bolt on replacement for my single pot calipers. Is there any hope, or am I in cloud cuckoo land?
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1988 944S since 1991 - 18 years and counting . . . |
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03-24-2008, 03:37 AM
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Trying to work for parts!
Join Date: Oct 2006
Location: MO
Posts: 1,760
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Not sure, but I would question why your calipers are freezing up to begin with. they shouldn't.
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86 Metallic Grey 85.5 Metallic graphite - Gone |
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03-24-2008, 08:12 AM
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unindicted co-conspirator
Join Date: Jul 2007
Location: Fresno, CA
Posts: 1,660
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There is a nice 2 piston caliper bolt on replacement made by wilwood.
I don't know about if it fits the '88 's', but it may be worth looking at.
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'03 996 - sport exhaust, sport seats, M030 sport suspension, stability control, IMS Solution ‘86 928S3 - barn find project car |
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03-24-2008, 08:13 AM
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Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
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in 45 years of driving mostly foreign vehicles, i've never had a caliper freeze, much less repeatedly after freeing it up.
i have to believe there's more to the story.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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03-24-2008, 08:26 AM
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Registered
Join Date: Mar 2007
Location: Cheshire, England
Posts: 49
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Hi Guys,
Thanks for the replies. The type of caliper I am talking about has only one piston and relies on the whole caliper being able to move, so that when the piston applies pressure to the pad on one side of the rotor, the whole caliper body moves slightly and the other pad is pulled against the rotor from the other side. Over time, road dirt etc gets in and stops the caliper moving as freely as it should, so the pad on the piston side does most of the work. Is this the type of caliper you are thinking of? Not your normal fixed caliper with pistons on either side of the rotor? If it is, then how do I stop road junk gumming up the caliper slide?
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1988 944S since 1991 - 18 years and counting . . . |
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03-24-2008, 08:38 AM
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Join Date: Feb 2007
Location: CT
Posts: 643
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Take them off and clean them.... They don't get that much junk in them... These are NOT off-road cars!
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-Randy 1984 944 -Race car project 1993 968 coupe- Amazon Green |
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03-24-2008, 08:45 AM
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Custom User Title
Join Date: Nov 2003
Location: Barrie, Ontario Canada
Posts: 2,954
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Quote:
 Basically stuff gets into the slider and it will rust thus seizing the caliper. I would find a decent place that will rebuild your calipers. You could also get rebuilt calipers "over the counter" from places like AutoZone for about $50. |
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03-24-2008, 08:47 AM
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Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
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is the caliper on the front side of the mazda rotor where it will pickup trash, probably why p-cars have the caliper facing the rear.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" Last edited by bearone2; 03-24-2008 at 09:59 AM.. |
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03-24-2008, 09:48 AM
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Registered
Join Date: Feb 2007
Location: CT
Posts: 643
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You can also rebuild them yourself, it is easy. Just use some power and scrup the stuff off...
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-Randy 1984 944 -Race car project 1993 968 coupe- Amazon Green |
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03-24-2008, 11:58 AM
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Join Date: May 2005
Location: Wichita KS
Posts: 599
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Are the dust seals missing? Shouldn't be any dirt getting inside with the rubber seals intact.
I always greased the bolt before reinstalling the calipers, and have never had issues such as this.
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Jack 86 Porsche 951 - LR 3" Exhaust, MaxHP chips and ProfecB @ 15psi 83 Porsche 944 - Still under re-construction. 08 Suzuki Boulevard M109R LE 02 Nissan Altima SE3.5 |
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03-24-2008, 01:26 PM
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In the Fires of Hell.....
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Here's another option, but you would need the metal block adapters to go to a radial mount. Looks like a pretty decent deal....
http://phoenix.craigslist.org/pts/606361047.html Cheers, Keith Not mine, BTW....
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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost |
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03-24-2008, 02:33 PM
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944 Turbo
