g150rdt

I found the calipers @Tasca for $87.00 ea brand new FR3Z-2B120-H (L/S) FR3Z-2B121-H (R/S). I am going to call them in the morning to make sure they are S550 calipers. Cheaper than ebay.

sp44

And.....what happened?

g150rdt

They just arrived yesterday, they were out of stock for a week. They are huuuuge! Also they sent me the wrong hardware kit ( i hate it when that happens) now i have to wait till Monday to get the right one. Calipers and rotors fit to a "T".

sp44

Nice! What's the part number of the hardware kit? Did you go with Centric Rotors?

g150rdt

At Tasca Ford where i bought the parts, they kept telling me that the part they send was the correct one P/N FR3Z-2068-C. That is the hardware kit for the Brembo caliper not the S550.So i send it back, went to napa store and got the correct kit P/N UP 84274A. Google both parts number and you will see the difference. Yes i got the Centric rotors, i put the left side on this afternoon and it fits perfectly. I used 1/4" spacers because the wheel was to close to the caliper and i didn't like it so close. I have 18" X 9" Saleen wheels.I removed everything so i can paint the calipers tomorrow, i will take pictures when i finish.

Norm Peterson

How close were they without the spacers?


Norm

08'MustangDude

You have to use the spacer or the rotor won't clear. He just went with 1/4" spacers to
push the calipers out another ~1/8". Without the washer as shown, the rotor intercepts
the caliper on the inside.

g150rdt

There seems to be a misunderstanding,a washer must be used to "center" the calipers. The "spacer" is used in front of the rotor to push the wheel out to clear the calipers, depending on your wheel, you may need one or not. I could have used my wheel without the spacer (1/4") but did not like it so close to the caliper probably 1/16" between the wheel spokes and the caliper. Hopefully this clears the issue.

Norm Peterson

That's the information I was looking for.

If 1/16" at the caliper radius isn't enough to avoid a rub, you may need to look for bigger problems than just the clearance being a bit tight. A 1/8" spacer would have been more than plenty, while being better than 1/4" in terms of lug nut thread engagement, which should be at least one full stud diameter (1/2", or 10 full turns of the nut).

As a (retired) structural guy I'm a fan of using the thinnest spacer you can get away with. Even made a couple out of 0.025" sheet aluminum for my '08 on account of 11" wide front wheels.


Norm

g150rdt

Thank you Norm for that info. Apparently the studs on my car came long from the factory, i have 9 turns on the nut, hopefully that is safe.