Subaru 4 pots vs sti Brembo's

so is there any difference in stopping power between the 2. or is it simply the fact that the Brembo's look a lot nicer behind the wheels! Not very many brembo sets available over here but plenty of Subaru 4 pots from Impreza boys upgrading to BBK's

your stock brakes are better than 4 Pots.

my stock 2 pot calipers? better than 4 pots?

Yes. number of pistons alone doesn't have a bearing on clamping force, heat capacity, mechanical advantage of the caliper design etc. Brembos and four pots are fixed four piston. Stock LGT brakes and sliding two piston.

 

Shoot a PM to Ken at KNS Brakes. I think his handle is brakeguru here. He's the one that told me to keep the stock LGT brakes or get Brembo's and skip the four pots. Basically:

 

Stoptech four pots > Brembo four pots > LGT two pots > WRX four pots

Calipers, pots, etc dont determine stopping power. First thing to do to upgrade your stopping power is tires, then a brake pad that works more aggressively in your temperature range.

 

Certain race calipers will give you better feel and modulation because they are fixed mount calipers, but that feel doesnt necessarily equate to stopping power.

Must we really revisit this topic weekly?

 

Just get the WRX 4-pots. They are 4-piston instead of two, so therefore they must be better. Oh and if they are red, then they are even better yet.

didnt see a topic like this when i did a search. so biz77 are dont agree with the above and believe 4 pot subaru calipers are better than stock 2 pots? im not much of a fan of red really!

didnt see a topic like this when i did a search. so biz77 are dont agree with the above and believe 4 pot subaru calipers are better than stock 2 pots? im not much of a fan of red really!

 

No, I certainly do agree with this, as it is the correct information. I'm just being a jackass because this question seems to come up weekly. There are plenty of other threads on the subject that you should have found by using the search function. Let me help:

 

http://www.legacygt.com/forums/showthread.php?t=90267&highlight=4pot

 

http://www.legacygt.com/forums/showthread.php?t=84986&highlight=4pot

 

http://www.legacygt.com/forums/showthread.php?t=58835&highlight=4pot

 

http://www.legacygt.com/forums/showthread.php?t=119097&highlight=wrx+red+brakes

 

http://www.legacygt.com/forums/showthread.php?t=65833&highlight=wrx+red+brakes

cheers thanks for the links, obviously search didnt like my search phrases!

The OE 05-09 GT brakes are largely superior due to the rotor size. The 4-pot uses the 294mm/11.4" rotor from the GC STi and GD WRX. This rotor is quite a lot smaller than the one we get standard on the GT.

 

The 4-pots were a common upgrade for better brake feel and track performance, but that was primarily on older Legacies and Imprezas, before brake rotors started jumping in diameter. Now we have the GTs, the new STi Brembos, plus the aftermarket options if you're racing/autocrossing the car and need more than just better pads and fluid will yield.

so what size are the standard rotors? i rougly measured about 315mm last week. anyone know the exact size incase i decide to just go for new disks and pads and lines instead of Brembo calipers

315mm is correct. For about the same money as the front red 4-pots a vendor here is offering Willwood calipers that fit the stock-sized rotors. He had a limited number he was doing at the price...

315mm is correct. For about the same money as the front red 4-pots a vendor here is offering Willwood calipers that fit the stock-sized rotors. He had a limited number he was doing at the price...

 

Do you have a link? I'd say shipping would be a killer though.

 

Im presuming USDM and JDM pad/calipers/rotors are the same?

 

Maybe some new rotors and pads is all i need

Change your pads, fluid, and tires before considering blowing money on upgraded calipers, those 3 things make a big difference in braking to begin with. Unless you want the bling of course lol

Nothin' wrong with a little brake bling!

I have front and rear Stoptech BBK.... unless you have money to burn the BBK is not worth the money. Only advantage I see with the BBK is with severe sudden stopping...like to avoid an accident or tracking the car.

I'd say the FIRST thing to do is upgrade BRAKE FLUID.

 

This alone will change your brake pedal feel.

 

Motul RBF600 will give you a rock solid brake feel and less brake fade on the track.

I have front and rear Stoptech BBK.... unless you have money to burn the BBK is not worth the money. Only advantage I see with the BBK is with severe sudden stopping...like to avoid an accident or tracking the car.

 

That's good to know so I dont get tempted in the future. I upgraded my 2.5i brakes to the LGTs front and rear and noticed a significant difference, they seem pretty strong already. Things will only get better once I get rid of the OEM Yoko all-seasons...

I'd say the FIRST thing to do is upgrade BRAKE FLUID.

 

This alone will change your brake pedal feel.

 

Motul RBF600 will give you a rock solid brake feel and less brake fade on the track.

 

+1 on fluid making a big difference!

Okay so superiority differences aside;

 

Do the '06-'07 WRx 4 Pots bolt on the '05+ LGT spindles with stock '05+LGT Rotors? Does anyone have any pictures if they do?

Lets just say for bling factor and not a performance factor.

 

Although like everyone mentions about the pros and cons there are many more factors than just rotor diameters and numbers of pistons that determine performance. Pedal feel is also a personal taste thing. Some like mushy (porgressive pedal feel) or raock hard (On-Off feel).

 

I haven't seen anyone mention anything about piston size on the master cylinder. That could be a debate thread all on its own.

Braided lines will make a big diff in feel as well as performance. imo:)

 

And the very first sticky is a good read.

No offense but your opinion is counter to some of the experts opinions here. That and somebody actually did a test by replacing other stuff and then lines last. They couldn't tell the difference with just the lines added.

 

From what I've read the biggest difference in feel will be pads, then fluid, then lines.

 

This is assuming your lines are in good shape.

 

I noticed a good change in feel with pads and new fluid.

Ideally along with the pads and fluids... But I have noticed a diff on some older cars (510, mini cooper, ford contour, civic) I have owned/ driven when heavy braking was used. Just saying. And for under $150 why not?

So I am doing it!

I picked up a set of 2006 WRX 4/2 Pots for $200! Yeah talk about being in the right place and ther right time.

 

SO I am doing this so I can use my many sets of wheels on my daily driver...and because now I can . I have some sweet Team Dynamics Wheels with some awesome snow tires that wouldn't fit over the 05 LGt front brakes.

 

I'll keep you all posted with pics and such.....

 

For the record my race car is a '95 Impreza L with '06 WRX swap that I use for Autocross, Rallycross, 1/4 mile drag, & track events. I have the 4/2 pots with some DBA series 5000 rotors and Hawk HP Plus pads and I have never felt the need for more braking power (mostly driver upgrade neede there ) So for my daily driver it shoudl be fine and should add some much needed bling compared to the stocker stuff.

The fronts 4 pots bolt on no problem. Just remove the two pot calipers and rotors and bolt on the 4 pot calipers and rotors and BAM! there you have it.

 

Ther rear 2 pots shall require these Kartboy FHI 2 Pot Rear Brake Adpater Brackets KB-022 in order tho work. I shall order those soon. http://www.scoobymods.com/kartboy_subaru_2_pot-t7905.html

 

First impressions are the 4 pots have a very similar initial pedal feel (nice and firm) but they stop with less pedal pressure than the two pots. No complaints so far. This is my daily driver so they won't get punished like the 4 pots / 2 pot FHI setup on my L.

 

I'll post updates when I get the brackets.

 

Sebastian

 

http://www.sebaru.net