I've been working on redoing the rear brakes for months now. I bought new 914/4 rotors from PP. I had them drilled for 5-lug. The guy screwed them up and drilled them wrong (Apparently, using the old rotors as a template is too complicated ). I then bought 914/6 rotors from PP, and they don't fit at all. The diameter of the "hub part" is too small to fit over the hubs on the car.

Are the rotors PP sent me the wrong parts or does my car have a "non-standard" 5-lug upgrade?

The original rotors have a 6 5/8" "hub diameter"... and the new are 6".

Click to view attachment

...and the new rotors...
Click to view attachment

... even the "hub holes" are a different diameter...
Click to view attachment

i'm confused, if you had the new rotor re-drilled, where are the original 4-lug thru holes that are not used?

it's the ID that matters, are you saying they don't fit over your hubs at all??

Here is what I know.
I have the 5 lug conversion from Mr. Eric Shea (AKA the MAN), and the 914-6 discs from PP. this all fits together nicely.
If the bolt circle is NOT 5 x 130, then they are the wrong part.

With a five-lug pattern, measure from the center of one stud hole to the center of the farthest stud hole, skipping the adjacent hole. The resulting measurement is slightly smaller than the actual bolt-circle diameter.

94 mm (3 11/16 inches) 100 mm
108 mm (4 1/4 inches) 112 mm
109 mm (4 5/16 inches) 115 mm
114 mm (4 1/2 inches) 120 mm
124 mm (4 7/8 inches) 130 mm

Hope this helps!

from the second picture it looks as if the measurement MAY be 4.5 inches which would be a 120 mm pattern

That looks like the wrong disc. The stud holes aren't wide enough compaired to the old disc that came off the car... maybe got 5 x 100

Whats the part number on the new disc as it looks wrong.

My 914/6 discs fit prefectly on my 914 hubs. I did have to clearance the calipers abit thou........

Yeah, those discs have to be the wrong parts. Bolt circle looks like 5x120mm (or 5x4.75") based on your measuring tape. Definitely the wrong discs.

Demick

What part number did you get?

The -4 is 914-352-401-10, the -6 is 911-351-041-20 and the vented rear (for a six conversion) is 901-352-041-14.

Matt

Going by GOPACK's numbers, they seemed to be 120mm diameter.

The part number is 901-352-401-18-OEM (at least according to the PP bill of sale).

Wrong disc from PP. Should have two hub mounting screws as well.

Welcome to the F-up'd world of drop shipping where the company that sells you the part never sees the part that went out to you! Gotta love it. WorldPaq sent you a BMW rotor or something.


B

Did you enjoy that? Did ya? We are all family here and we all help each other out in these sensitive matters. Why oh why go outside the circle of trust to some kind of flimflam man? We all ask, why? Pouquoi for god sakes?

someone must be enjoying happy hour right about now

screw ups happen, not too many places left to buy parts for our cars on-line, got a recommendation for a shop that is error free and easy to buy from????

Sorry, its the red wine talking. The best way is having like a bunch of cars in the back yard to salvage from. Error free? As long as I'm ordering, there will be some real @#%$#*&^%^$%ups for shure.


Wait, I got it, let me get this good looking deal right here at lowballbangerer.com.

JPB, what do you mean? I thought PP was "in".

Anyway, the rotors are BALO instead of the "Genuine Porsche" I ordered from PP. Now I have to wait for the sales "supervisor" to tell me if I get my shipping costs refunded. About $85 round trip.

I'll be very surprised if PP makes you eat anything besides the wasted time. I think they care as much as they can and still run a business.

"Genuine Porsche" should be Zimmermann I would think. There may be others that Porsche sourced from, but Zimmermann is what I have always purchased over the past 30 years.

a quick search turned up this....

"Balo Brakes
German made OEM brakes are now available in the aftermarket with our selection of Balo brakes for your European car
Why bother with cheap offshore brakes that might not give you the same performance as original—especially when OE Balo brakes are available
Balo brake rotors are produced from the same heat-treated steels as your original rotors
As one of the premier suppliers to BMW and Mercedes, Balo brakes have been tested in the harshest conditions "

They make for : • Audi • BMW • Mercedes Benz • Saab
• Volkswagen • Volvo


Someone mislabled the parts or grabbed the wrong ones off the shelf