Subaru 4 pots! - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Admiral Ballsy · 06-27-2013, 09:16 AM

Quote:

Originally Posted by nokia7190

In term of Subaru 4/2 pots, do they need 15-20mm spacer on both front and rear stock wheels?

According to a post in the BRZ section, the rears are OK and the fronts need a 7mm spacer.

I don't know what you'd actually get out of that setup other than a look - you don't get any additional thermal capacity, and you actually have less potential braking torque. Seems like the only real upgrades on a (semi) budget are Legacy fronts, or the STi setup.

OrbitalEllipses · 06-27-2013, 10:59 AM

Quote:

Originally Posted by Admiral Ballsy

According to a post in the BRZ section, the rears are OK and the fronts need a 7mm spacer.

I don't know what you'd actually get out of that setup other than a look - you don't get any additional thermal capacity, and you actually have less potential braking torque. Seems like the only real upgrades on a (semi) budget are Legacy fronts, or the STi setup.

I do believe you can fit Z32 turbo brakes (same caliper) with a redrilled bracket and a specific rotor...there's information on that on NASIOC though. That Legacy rotor is pretty goddamn beefy though.

Admiral Ballsy · 06-27-2013, 11:19 AM

Z32 calipers have much smaller pistons. 26mm or 30mm depending upon version.

nokia7190 · 06-27-2013, 11:38 AM

Quote:

Originally Posted by OrbitalEllipses

I do believe you can fit Z32 turbo brakes (same caliper) with a redrilled bracket and a specific rotor...there's information on that on NASIOC though. That Legacy rotor is pretty goddamn beefy though.

This guy made the bracket and more -> global-z

Kodename47 · 06-28-2013, 02:29 AM

Quote:

Originally Posted by Admiral Ballsy

According to a post in the BRZ section, the rears are OK and the fronts need a 7mm spacer.

I don't know what you'd actually get out of that setup other than a look - you don't get any additional thermal capacity, and you actually have less potential braking torque. Seems like the only real upgrades on a (semi) budget are Legacy fronts, or the STi setup.

So it definitely needs a spacer for the fronts then.

Why would you have less braking torque? And what is the Legacy front brake upgrade you speak of? :happy0180:

OrbitalEllipses · 06-28-2013, 03:35 AM

Quote:

Originally Posted by Admiral Ballsy

Z32 calipers have much smaller pistons. 26mm or 30mm depending upon version.

Theres an identical caliper; from what I recall it's the Z32 turbo caliper and also certain years of Skyline GTS.

Scooby South · 07-04-2013, 11:26 PM

Fronts are indeed, Magnetic:

Test Fit.... 2 Pot Subaru Rears for Clearance with NO PADS yet..

muuuahahaaaaa

Bill

Kodename47 · 07-05-2013, 03:08 AM

Still no confirmation of spacers required for stock rims.....

And can someone explain why these would cause a reduction in braking torque?

Scooby South · 07-05-2013, 08:18 AM

The front would require spacers... for sure.. as I was going to trade the 4pots out on my daily to the BRZ..not sure how big a spacer...never got that far. Someone mentioned a 7mm .... maybe.. a 5mm might work.. I will try that when I have a chance.

Bill

Beyer Subaru · 07-05-2013, 09:28 AM

Thanks a lot @Scooby South!! I didn't think that the 06-07 fronts were aluminum.

Scooby South · 07-05-2013, 09:59 AM

Fronts I think are made out of Cast Iron.. not sure..it magnetic whatever they are made out of.. now the rears...non-magnetic.. I think are Cast aluminum...

Bill

Beyer Subaru · 07-05-2013, 10:22 AM

Quote:

Originally Posted by Scooby South

Fronts I think are made out of Cast Iron.. not sure..it magnetic whatever they are made out of.. now the rears...non-magnetic.. I think are Cast aluminum...

Bill

Yep, my sentiments exactly. One of the other members said that they were aluminum and I believed that to be wrong. Thanks again for the confirm.

Admiral Ballsy · 07-05-2013, 10:40 AM

Quote:

Originally Posted by Kodename47

And can someone explain why these would cause a reduction in braking torque?

The pistons in these are smaller than in the stock calipers. Since the positioning is the same, the net result is reduced braking torque.

Wonderbar · 07-05-2013, 03:29 PM

Quote:

Originally Posted by Beyer Subaru

Yep, my sentiments exactly. One of the other members said that they were aluminum and I believed that to be wrong. Thanks again for the confirm.

Mine do grab a magnet but barely. I even used a rare earth out of a computer hard drive, which are insanely strong. I think that possibly the pistons and internals are steel/iron with an aluminum outer?

I to be honest have no clue at this point.

07-05-2013, 03:08 AM	#64
Kodename47 Senior Member Join Date: Oct 2012 Drives: UK GT86 Location: UK Posts: 3,040 Thanks: 185 Thanked 1,629 Times in 1,112 Posts Mentioned: 155 Post(s) Tagged: 1 Thread(s)	Still no confirmation of spacers required for stock rims..... And can someone explain why these would cause a reduction in braking torque? __________________ .: Stealth 86 :. Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook

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07-05-2013, 09:28 AM	#66
Beyer Subaru Senior Member Join Date: Sep 2012 Drives: 2013 BRZ SWP 6AT Ltd Location: Alexandria, VA. Posts: 1,607 Thanks: 859 Thanked 776 Times in 485 Posts Mentioned: 37 Post(s) Tagged: 1 Thread(s)	Thanks a lot @Scooby South!! I didn't think that the 06-07 fronts were aluminum.

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