subaru 4 pot vs legacy gt turbo brakes
how would these two brakes compare?
anyone have any experience?
Thanks in Advance!

 

Ive got 4-pot fronts and 2-pot rears, and I wouldnt have it any other way. Im a avid beleiver in having 4-pots instead of 2 is a lot better.

Compared to the stock WRX brakes, the 4-2pot conversion stops in 3/4 the distance, they are awesome!

Rich

 

Not a chance in hell that this statement is even close to true. The only thing that will reduce stopping distance more than a few feet from 60mph is changing to much stickier tires.

Gary
Sheehan Motor Racing
www.teamSMR.com

 

The Subaru 4 pots and Legacy GT brakes should have similar fade resistance with a given pad. I would expect the 4 pots to give you slightly less front bias than the Legacy GT brakes, given the larger rear brakes the Legacy has. If you go with 4 pots, I would keep stock rear brakes, and if you do the Legacy setup, I'd do all 4 wheels for that reason. Also, the 4 pots will fit under a lot of 16" wheels, including OEM RS wheels from 1998-2001, but the Legacy brakes will require 17s.

And Gary is absolutely right- if it's actual braking distance you want to improve, tires help far more than anything, with higher friction pad compounds a distant second. Bigger brakes don't improve stopping distances until you have so much tire that your current setup doesn't produce enough braking force to lock them up.

 

Here's a spreadsheet legacy777 created (im not sure if he posts here)
http://main.experiencetherave.com:80.../brakemath.xls

Also of note is that changing your brake bias, weight distribution and altering your suspension tuning can all have a fairly significant effect on brake distances and character. Sticky tires are the only way to improve brake distances without altering another aspect of the cars handling though.

Please don't state something as a fact when you don't have any idea.

 

Hey Ban Suvs why ifyou go with the subaru 4 pot fronts, leave stock rear?

I did 4 pots , with legacy h6 rears did i do something bad to my car?

 

I left the rear stock because I was only concerned with fade resistance. Rears are fine with upgraded pads. Also, the 4 pots have less brake torque than stock, so adding them already moves brake bias slightly rearward.

 

So since i have h6 rears i further moved break bias to the rear. Is h6 rear plus the less brake tq of the front 4 pots counterproductive. Too much to the rear is it a bad thing to have? What is ideal for performance.

What about jdm rear 2 pots? Would that promote even a more bias rearward?


I thought i had a good setup, i hope i didnt mess anything up.

 

To a point, it's a trade off. Most cars are about 10% forward biased. Equal would be when both front and rear lock at the same time, and that would theoretically be the optimal brake setup. However, if the rear locks first (due to wierd bumps or a higher traction situation than tuned for, or whatever) the car will oversteer under braking, and wouldnt that be fun in a panic stop, or a slightly miscalculated entry.

I currently have my bias tipped 21% forward over stock. I'm cooking pads faster than i should, I've increased my stopping distance a bit according to my g-tech (although i have other bias changes as well) and on very tight turns where i can trail brake its a little annoying, but it doesn't feel unsafe.

 

2 pot rears would move your brake bias more forward, but it's not worth the $900 it would cost, not even close. Basically, just use more aggressive pads up front than in the rear, and you would never even notice. Like Scottzg said, almost all cars are set up a little front-biased anyway, so no big deal. Theoretically, you are more likely to lock the rears before the front now, but for one, you have ABS (I presume) and another, you haven't crashed yet, so you're probably okay.

 

Wow, that sucks. What's your setup?

 

legacy turbo front brakes, 35mm piston rears, a wagon proportioning valve and a full set of axxis ultimates. The prop valve helps a fair bit in a straight line stop (i only lost ~4' in 60-0, g-tech avg.), but doesn't do anything for me trail braking, when pedal pressures are lower. I've got a set of 38mm piston calipers in a box in my garage, i just need to motivate myself to put them on. They'll return my bias to stock.

I should mention i have a bc legacy with 130hp. My front brakes are smaller than wrx ones, and my rears are exactly the same. That's for two reasons; my car is more *** heavy than a wrx, and 15" tires are much cheaper

 

yeah thanks, I have axis metal master up front and oem rear pads. I hope that keeps things with stock charactersitcs but the benifit of upgraded brakes!

 

actually, it just means your bias shifts depending on how warm your brakes are.