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Old 02-07-2007, 08:56 PM   #1
vicdeng
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Default How's STI 4/2 pots comapre with the 06 subaru 4 pot?

they seems the same to me. anyone are more acknowledgeable about this? thanks
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Old 02-07-2007, 09:51 PM   #2
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they seems the same to me. anyone are more acknowledgeable about this? thanks
As far as I know, they are the same...with the exception of the 'SUBARU' text being raised casting on the blacks and a decal on the reds.
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Old 02-07-2007, 09:53 PM   #3
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Yup, same thing.
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Old 02-07-2007, 10:04 PM   #4
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iirc the older fronts were cast iron? the new ones aluminum?
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Old 02-07-2007, 10:22 PM   #5
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iirc the older fronts were cast iron? the new ones aluminum?
yup!!
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Old 02-07-2007, 11:19 PM   #6
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iirc the older fronts were cast iron? the new ones aluminum?
I don't think the "reds" are aluminum...can you cite a source?
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Old 02-07-2007, 11:59 PM   #7
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yup!!
The new red ones are iron too.

The only difference is that the letters are no longer raised - it's a sticker. This could actually allow a few more wheels to fit.

Edit: I assume you are comparing the new 06 WRX calipers to the older non-USDM 4/2 pots - not the Brembo's.
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Old 02-08-2007, 02:40 AM   #8
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The new red ones are iron too.

The only difference is that the letters are no longer raised - it's a sticker. This could actually allow a few more wheels to fit.

Edit: I assume you are comparing the new 06 WRX calipers to the older non-USDM 4/2 pots - not the Brembo's.
I thought someone did a magnet test and the brake calipers didn't stick to the magnet.
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Old 02-08-2007, 02:54 AM   #9
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I thought someone did a magnet test and the brake calipers didn't stick to the magnet.
i think you mean vice versa that'd be one hell of a magnet . how many copper wires you have running on it to that battery?
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Old 02-08-2007, 03:57 AM   #10
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Clarify
The fronts have always been iron. The rears are aluminum - I'm pretty sure always.
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Old 02-08-2007, 04:13 AM   #11
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i think you mean vice versa that'd be one hell of a magnet . how many copper wires you have running on it to that battery?
What're you talking about?

Quote:
Originally Posted by WRXBrakes View Post
Clarify
The fronts have always been iron. The rears are aluminum - I'm pretty sure always.
Ah, might be the test on the rear that I remember.

EDIT: Yup, here's the thread. http://forums.nasioc.com/forums/show...ghlight=magnet

Last edited by Impreza01; 02-08-2007 at 04:18 AM.
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Old 02-08-2007, 05:19 PM   #12
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i have black older style fronts. cast iron for sure.
i also have newer 06 spec rears, aluminum, no doubt. i can't confirm the other sides tho (are the older rears ever iron? and the newer front still iron?)

I know the exact same caliper basically on the 300ZX/Skyline are all aluminum front and back. (I have a USDM 300ZX on hand, and the Skyline rears are the same caliper also. Have tested both.)

And as far as the front lettering area. on the older style where its cut in, it actually sticks out less. the height of the raised letters is the height of the new surface wher the sticker is attached. But either way we're talking like 1mm or so here. not much of a big deal.
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Old 02-08-2007, 09:57 PM   #13
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so aluminum works better than cast iron. and where can i order some newer 06 front and rears?
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Old 02-08-2007, 10:13 PM   #14
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...this thread is

The NON-Brembo, Subaru 4-pot fronts ARE and ALWAYS HAVE BEEN cast iron, and aside from the color and the minor cosmetic change to the casting they are ALL THE SAME and use all the same parts.

the Nissan 4-pots went from aluminum to cast iron EARLY ON and the 'Z32' calipers---the last years ones.... are all cast iron and are ALMOST identical to the 'Subaru' 4-pots(the Nissan ones use wider rotors and the mount ears are different spacing)---the pads and parts(except the pad pins---remember---wider rotors !!!! ) are the same.

I do not know for sure what the rear Subaru 2-pot calipers are made of, but the 'Z32' Nissan rear 2-pot pads are the same.

So if ya need pads for an '06+ WRX, ya can order pads for a '95 300ZX TT and get teh right pads----D460 for the front and D461 rear
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Old 02-09-2007, 01:34 AM   #15
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...this thread is

The NON-Brembo, Subaru 4-pot fronts ARE and ALWAYS HAVE BEEN cast iron, and aside from the color and the minor cosmetic change to the casting they are ALL THE SAME and use all the same parts.

the Nissan 4-pots went from aluminum to cast iron EARLY ON and the 'Z32' calipers---the last years ones.... are all cast iron and are ALMOST identical to the 'Subaru' 4-pots(the Nissan ones use wider rotors and the mount ears are different spacing)---the pads and parts(except the pad pins---remember---wider rotors !!!! ) are the same.

I do not know for sure what the rear Subaru 2-pot calipers are made of, but the 'Z32' Nissan rear 2-pot pads are the same.

So if ya need pads for an '06+ WRX, ya can order pads for a '95 300ZX TT and get teh right pads----D460 for the front and D461 rear

Will there need to be any modifications made to fit the pads?
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Old 02-09-2007, 07:20 AM   #16
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Will there need to be any modifications made to fit the pads?
no....

Last edited by Uncle Scotty; 02-09-2007 at 12:09 PM.
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Old 02-10-2007, 09:49 AM   #17
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yup, thanks for that uncle scotty, thats always good to remember as some brake manufacteurs have yet to list pads for the 06 WRX, but they are the same as the 300zx/z32-body pads.

And Vicdeng: does alum work better than cast iron? yes and no. Aluminum absorbs heat faster, but cast iron will hold more heat. Both have their advantages. Aluminum usually is great tho because of the weight savings.
The alum. rear 2-pots weigh very little. That and of course the larger vented rotor you add on makes much more difference.

However even the heavy cast iron fronts are lighter then the stock WRX 2-pot sliders/brackets by a pound or so. Can't go wrong using this setup. Especially and being able to keep 16" wheel fitments. i miss that.
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Old 02-10-2007, 10:31 AM   #18
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yup, thanks for that uncle scotty, thats always good to remember as some brake manufacteurs have yet to list pads for the 06 WRX, but they are the same as the 300zx/z32-body pads.

And Vicdeng: does alum work better than cast iron? yes and no. Aluminum absorbs heat faster, but cast iron will hold more heat. Both have their advantages. Aluminum usually is great tho because of the weight savings.
The alum. rear 2-pots weigh very little. That and of course the larger vented rotor you add on makes much more difference.

However even the heavy cast iron fronts are lighter then the stock WRX 2-pot sliders/brackets by a pound or so. Can't go wrong using this setup. Especially and being able to keep 16" wheel fitments. i miss that.
Which setup u mean? do u know any website is selling these setups?
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Old 02-10-2007, 10:45 AM   #19
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Especially and being able to keep 16" wheel fitments. i miss that.
Why go for 16's when there are 15's that will fit just fine?

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Old 02-10-2007, 11:01 AM   #20
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Aluminum has a higher heat capacity and heat transfer rate PER UNIT OF MASS than cast iron. Of course it has a lower density too.

So given 2 calipers of the same shape size - they will have similar ability to absorb/reject heat - BUT - the cast iron caliper will be stronger. Hence if you look at the cast iron FHI 4 pot vs the 300ZX one you will note the strengtheneing ribs added to the aluminum version.
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Old 02-10-2007, 01:15 PM   #21
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i was referring to the very-versitile oem 4pot/2pot setup there, Vicdeng.
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Old 02-10-2007, 01:19 PM   #22
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i was referring to the very-versitile oem 4pot/2pot setup there, Vicdeng.
where can i get it though?
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Old 02-10-2007, 02:28 PM   #23
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from me!
actually mines probably already spoken for, but if it falls through i can let ya know if you're interested (drop me a pm)

You can order most of the parts: front and rear calipers, rear rotors (use oem wrx fronts), and pads, etc from any subaru dealer (subarugenuineparts.com probably has some of the best prices). many vendors on her also offer them i'm sure. Then just get some brackets to adapt the rear calipers to your oem heat shield, its cheaper then replacing the shield with the proper 06 one. Brackets can be had from a number of sources, including Kartboy.
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