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B4 twin pots and RDA rotors installed!


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#1 SUBARU

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Posted 12 March 2009 - 05:37 PM

Well, over the last week in my spare time I have been refurbishing some B4 twin pots that I bought off cracka. It was no where near as difficult as I first imagined it would be! (pads are Bendix Heavy Duty).
I purchased a brake repair kit, the rotors and pads from Northern Brake and Clutch in North Melbourne. They were great! Even letting me go home with the pads and repair kits at no cost until I could come back and pick up the new rotors that they ordered in. This was really handy as it meant that I could get started on refurbishing the calipers straight away.

Presentation wise, I sprayed the front of the new rotors with heat proof black paint, to tie it in with the black rims and also gave the calipers another coat of paint as they had a few chips.

Anyway, this afternoon I tackled removal of the old calipers and rotors, which was also pretty easy, aside from the very top bolt on the calipers... My impact wrench didn't fit on there as snugly as I would have liked, but at the end of the day and a few extra minutes of patience, the calipers came off without a hitch.
The rotors were stuck fast, but popped off easily enough with the assistance of a 8mm bolt wound through the face of the rotor.

Anyway, after installing the new RDA 294mm slotted rotors, refurb'd B4 calipers and Bendix pads, I did my best to bleed the new calipers. I bought this cool little 'one man' brake bleeding device. Seemed to work well enough.

Popped the wheels back on and took it out for a test and o bed in the pads/rotors. After a while, the difference was very noticable, the car pulls up mech better than the old setup. Although I think at my next service I will get the dealer to bleed the brakes properly as they are a tiny, tiny bit squishy...

After arriving back home, there was of smoke coming out of the wheels and brake fluid splattered over the inside of the wheels. I though, oh shit, I've got a leak somewhere.... So I checked the levels and it all looked fine, so I wiped of the splatter and took it out again, this time, it looked as though there was no more splatter or smoke, so I guess it was just run off fluid that had spilled onto the rotors when I was reinstalling the lines/bleeding the system.

Anyway, I'd highly recommend this upgrade to anyone out there with an RX. It's not too difficult if you have any sort of mechanical knowledge.

By the way, I didn't do a DIY as there are a heap of DIY's for this floating around the place. The only suggestion I would make is that you don't ry this without the right tools, such as vehicle stands, a compressor/rattle gun and a bit of patience. Oh and research, lots of research if you plan to do it yourself!

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#2 N/A_EJ22

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Posted 12 March 2009 - 05:49 PM

Looks tops mate! Is it just the fronts that were off a B4? WHy was the top bolt on the caliper hard to get off? Just from not being removed since the car rolled off the production line? Anyway, bigger brakes are the shit. Fun to scare mates with as well :P. P.S. Bl3k ftmfw

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#3 SUBARU

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Posted 12 March 2009 - 05:52 PM

WHy was the top bolt on the caliper hard to get off? Just from not being removed since the car rolled off the production line?


Thanks mate... It was just the position of the bolt - difficult to get to with the rattle gun/attachments that I had on hand.

**Edit** Oh yeah, it was just the fronts that I put on. The rears on the RX aren't that much smalled than off the B4, so I left the OEM ones on there for the time being.

#4 CRUISN

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Posted 12 March 2009 - 06:06 PM

Nice work Chris. Bolts arent tight, no need for rattle gun. Maybe arms are small or maybe mine as just fooken massif? :D

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#5 Guest_Alex_*

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Posted 12 March 2009 - 06:07 PM

Very nice upgrade Chris! Very good upgrade for the moolah! Statistically, the Twinpots work just as well as the four pots. You have the same diameter. Just that the four potters are less resistance to fade on the racetrack after several laps. I think you could probably live with that minor detail ;)

#6 SUBARU

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Posted 12 March 2009 - 06:17 PM

Nice work Chris.

Bolts arent tight, no need for rattle gun. Maybe arms are small or maybe mine as just fooken massif? :D


Shurrup. You're just a jls h8r. BTW, if you ever need to use my rattle gun, just come over. ;)

***(then when Mark is busy at work, talking about how wicked the rattle gun is, I'll bash him over the head with my non girly arms, just to prove a point.) :P

Very nice upgrade Chris! Very good upgrade for the moolah!

Statistically, the Twinpots work just as well as the four pots. You have the same diameter. Just that the four potters are less resistance to fade on the racetrack after several laps.

I think you could probably live with that minor detail ;)


Good to know! Given that I'm never razing on trackz I think that this will do just fine!

#7 CRUISN

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Posted 12 March 2009 - 06:20 PM

Haha funny man. :D

Now you need these Chris........

http://cgi.ebay.com....-...A1|240:1318

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#8 cracka

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Posted 12 March 2009 - 06:23 PM

jeez mate, you don't muck around. i still love the old bbs rims in black, looks good altogether. aahh and you painted the hubs good stuff. now get some braided lines already
Nothing left to break .


#9 SUBARU

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Posted 12 March 2009 - 06:23 PM

Haha funny man. :D

Now you need these Chris........

http://cgi.ebay.com....-...A1|240:1318


Yessum, suspension is next on the list and then I'll be done with this thing...

They are so tempting, so so tempting. Although they say BH for sedan and wagon??? Surely if these are BH shocks/springs they wouldn't fit on a sedan?

#10 SUBARU

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Posted 12 March 2009 - 06:25 PM

jeez mate, you don't muck around. i still love the old bbs rims in black, looks good altogether. aahh and you painted the hubs good stuff.
now get some braided lines already


Hahaha... Well, I had everything together, so I thought I might as well get it all done!

Braided lines will come eventually, they are a little lower on the priority list ATM....

#11 Scuba-Roo

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Posted 12 March 2009 - 09:52 PM

Hey mate nice install :) can't wait to do this to mine. If you don't mind me asking how much did u pay for the repair kit, pads and rotars.

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#12 Matt

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Posted 13 March 2009 - 09:27 AM

Yessum, suspension is next on the list and then I'll be done with this thing...

They are so tempting, so so tempting. Although they say BH for sedan and wagon??? Surely if these are BH shocks/springs they wouldn't fit on a sedan?


My billies are off a BH5 (wagon) so they will fit.

Thats a good price too!

#13 CRUISN

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Posted 13 March 2009 - 10:04 AM

My billies are off a BH5 (wagon) so they will fit.

Thats a good price too!


There ya go Chris.

Buy them! Buy them NOW!

Thats an excellent price.

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#14 Matt

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Posted 13 March 2009 - 10:08 AM

+1 for what cruisn said....they are the best bang for buck for the na libs! seriously well worth it....and soo easy to install. I "think" the only difference is a slightly different rear spring rate....i didnt notice it but...and 2 days later had lowering springs in it anyways Edit:i have a friend who wants these so tell me if ya want them...and i wont tell him bout them haha...otherwise hell snap them up quicksmart

#15 SUBARU

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Posted 13 March 2009 - 11:19 AM

Hey mate nice install :) can't wait to do this to mine.
If you don't mind me asking how much did u pay for the repair kit, pads and rotars.


All up it was $370 for the rotors, pads and repair kit.


My billies are off a BH5 (wagon) so they will fit.

Thats a good price too!


Good to know, that makes me think harder... I wonder what springs are on them atm?

There ya go Chris.

Buy them! Buy them NOW!

Thats an excellent price.


I'm seriously thinking about it.. The credit card has copped an absolute thrashing lately!

+1 for what cruisn said....they are the best bang for buck for the na libs!
seriously well worth it....and soo easy to install.

I "think" the only difference is a slightly different rear spring rate....i didnt notice it but...and 2 days later had lowering springs in it anyways

Edit:i have a friend who wants these so tell me if ya want them...and i wont tell him bout them haha...otherwise hell snap them up quicksmart


Spring rate in the rear would be a bit firmer if anything right? I'm thinking about it very seriously... Would these lower the car at all or do they run the same height as stock?

#16 Soop

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Posted 13 March 2009 - 11:27 AM

If they're like the gen2's they're about 10-15mm lower.
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#17 Matt

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Posted 13 March 2009 - 12:11 PM

Yeah thats what i was told,rears being a lil bit firmer Theyre a tiny bit lower (not much),but the front will probly end up the same height as theyre set for the TT engine which is heavier But the shocks absolutely shit all over the std rx struts **By the looks of them they look like the stock springs on them atm

#18 SUBARU

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Posted 13 March 2009 - 01:35 PM

Soooooo... went to the pub for lunch and had a few beers, lost some inhibitions and buyded the f*#k out of these things...

Moral to the story, pub makes you spend money on cool shit.

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#19 Soop

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Posted 13 March 2009 - 01:56 PM

I bet Mrs.SUBARU disagree's.
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#20 SUBARU

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Posted 13 March 2009 - 02:00 PM

Hahahaha... What Mrs. SUBARU doesn't know won't hurt her!




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