peiqinglong

Installed the EMC rotors that I got from the groupbuy on my car and calidog's car over the weekend. Also installed the Porterfield R4S.

Inital review: There seems to be some improvement in breaking, can't really test them yet as I'm in the "break-in" period right now. The R4S are nice! There doesn't seem to be any squeaking so far, could be the Honda anti-squeak that we applied, but we'll see in time. The rotors look beautiful, hard to tell on my car, but you can see them much clearer on calidog's car.

CLS2001_97124

Nice, I can't wait until I get mine...

What is the R4S? Pads?

EricL

Porterfield R4S are the pads. They are available for front and rear.


LINK: http://www.porterfield-brakes.com/pads.html

peiqinglong

You can order both the rotors and pads from the Race Concepts.

danny25

looks good! Slotted and dimpled is the way I would have gone too.

Scrib

Nice! What kind of tires are those?

EricL

If you mean the "non-stock" tires and wheels, I'm pretty sure those are Yoko ES-100s.

PIC/LINK:



http://www.tirerack.com/tires/tires....omCompare1=yes

getdowng

Why dimpled and not cross drilled?

btw, looks good!!!

EricL

Everything has trade-offs... (x-drill can crack...)

You loose weight and gain some "venting" with a full x-drill. On a single stop, the increase cooling (minimal) would be offset by the loss of mass to "soak-up" the heat with the extra "thermal mass."

Once you start dimpling and slotting, you allow the pads to make good contact with the rotor surface by having (1) small pockets from the slots and "dimples" to allow the outgassing from very hot pads to be "relieved", (2) still get some "wiping" effect on the pads from the slots, and (3) get some abrasion to prevent "glazing" of the pads with the slots + dimples.

If you were going to run some ducts, and/or wanted to shave every bit of unsprung weight (and rotational mass) from the car, you would head towards x-drilling.

Note: There are some makers (Porsche, Brembo, etc.) that have pretty good luck with x-drilling rotors with minimal cracking (chamfering and heat/cryo treatment can do wonders along with engineering acumen and experience).

Note2: If you were buying rotors that were "machined" from an unknown source (presume they just bought "blanks"), you would probably be safer with slots, slots and dimples than with x-drilling (my opinion only).

peiqinglong

What he said

CLS2001_97124

Eric, Good info.. I feel better already, cause that is exactly what I ordered. slot/dimple.

Red Rider

When are you gonna put them to the ultimate test

Gilgamesh

...not many people know how a simple thing like 'breaking' a corner can help things structurally. They also help you not cut yourself

Smitty

So no upgrade for the rear rotors?... ya know, got to look good all the way around.... what do you have in store for the rear or are you waiting till the EMC rears come in?

Smitty

Zapata

how do you like those tires!?!@#!