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-   -   This should be fun!! (http://legacygt.com/forums/showthread.php?t=206322)

sschmelcke 04-23-2013 04:11 PM

This should be fun!!
 
http://img.tapatalk.com/d/13/04/24/jezesu8y.jpg

Now I just need the lines to come in.

dodgyozzy 04-23-2013 04:22 PM

What calipers did you get?

sschmelcke 04-23-2013 04:23 PM

Sti brembos. They are powder coated black.

BadTrainDriver 04-23-2013 04:27 PM

Are you doing any master cylinder or brake booster modifications?

sschmelcke 04-23-2013 04:30 PM

That's next. I'd love to get a brace for the 5th gens

ebo03 04-23-2013 04:34 PM

Have fun and I hope your Brembo upgrade goes smoother than mine. Front calipers were brand new and one of the bleeder screws would not hold fluid. Rear calipers were used and and had to helicoil mounting points.

sschmelcke 04-23-2013 04:35 PM

Spectacular. Thanks for the heads up. These were used but rebuilt and powder coats.

ebo03 04-23-2013 04:38 PM

I'll be shocked if you don't have to helicoil any of the mounting points. Aluminum caliper and steel bolts with high torque specs...it's almost a certainty.

BadTrainDriver 04-23-2013 04:50 PM

I don't mean a brace, i mean actually changing the master cylinder or brake booster.

When you do STi rear calipers, isn't the rear rotor larger?
Won't that increase the rear bias?

I'm just curious...i see this is a popular mod, and just wondering if it's worth the money, braking wise, or mainly for looks.

sschmelcke 04-23-2013 05:05 PM

I know about the booster and I heard it just helps with pedal feel.

sschmelcke 04-23-2013 05:06 PM

Your increasing front size and rear so I don't think it's going to matter that much

BadTrainDriver 04-23-2013 05:13 PM

You're increasing front rotor size?

Question about lines...are you using STi or Legacy (curious as to what the difference is)?

sschmelcke 04-23-2013 05:14 PM

Goodridge lgt lines. Yes the front rotor is larger than the stock lgt one.

BadTrainDriver 04-23-2013 05:45 PM

Interesting.
I didn't realized the front rotor was larger.
It can't be by much...it already looks pretty large.
Thanks for the info.
Please post your thought after the install.

GTEASER 04-23-2013 06:00 PM

Rotor size has nothing to do with brake bias. Larger rotors don't get as hot and the same amount of pressure from the pads has more effect on a larger caliper. Brake bias has to with the effect that the work that the master cylinder is doing in form of hydraulic pressure, has on the caliper pistons in the front and the rear.

Typically when you go with a larger caliper (bore diameter or number of bores), you need a larger master cylinder so that more hydraulic fluid is displaced.

The Brembos will work fine with the OEM master cylinder. And noone has tried the 4th gen mod of the STi brake booster and master cylinder on a 5th gen yet. From the best I have been able to determine, the early STi master cylinders has a 1-1/16" bore diameter, but the 08+ seem to have a 15/16", which is the same as the 5th Gen LGT. So dunno.


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