Putting together 2 piece rotors

**WRXBrakes** · 01-10-2007, 03:40 AM

I've been doing several of these so I thought I'd document it. Overall it's pretty easy but you do need 1 somewhat special tool - a micro-torque wrench.

First -I'll admit that the drilled rotors are pretty hot but I needed slotted only so I had to swap hats. So put that bling in a vice w/ some cardboard to protect it.

Unbolt the hat

Check out my deformed nuts

They are smashed out of round slightly to lock w/out loctite. 1 time use only though.

Get the new slotted ring in the vice and ready w/ the bolts - (re-usable)

You need a sensitive torque wrench for this small hardware - 15NM is the spec (about 11 ft-lbs if I can multiply correctly anymore) The small one has a range of 25-250 in-lbs so it's perfect

Snug the nuts and then torque to spec in a criss-cross pattern and you are done. I did a few sets in no time.

sirwilliam · 01-10-2007, 03:57 AM

Good write up. Thanks! So how much are you selling the 2-Piece for...just curious b/c I can't afford them

rmo55c · 01-10-2007, 08:10 AM

ken - nice write up - those rotors look oddly familiar =)

oh and hope the vendor status is going well. To anyone, including sirwilliam, who wants the 2 piece rotors up front go with ken. \

and that yellow is definitely more gold than i would have guessed - looks sweet. still love my blue hats though.

psuLemon · 01-10-2007, 12:54 PM

Me likey long time!!!!! Too bad they are like $700 for the fronts

**WRXBrakes** · 01-11-2007, 06:23 AM

they are definitely not cheap - i keep balking at putting the Brembo's on my wagon partly due to cost - partly due to all that weight...

My car feels way different than my friends STi - 10 lbs a corner will likely do that.

rmo55c · 01-12-2007, 03:37 PM

not cheap but worth it - i don't if ken got the weight differences between the stock sti rotor and the 2 piece ones, but there is definitely some. And now, when i need knew rotors, i only need the surface and not the hub. Also they look way way sweet.

I definitely felt a difference in turn in when I put these on, like the weight on the front end was much less.

flatthump · 01-12-2007, 03:45 PM

Quote:

Originally Posted by WRXBrakes

- 10 lbs a corner will likely do that.

Is it that much?

mtskibum16 · 01-12-2007, 04:21 PM

^^^That's what I've heard.

rmo55c · 01-12-2007, 04:39 PM

I'm pretty sure its not that much - the shipping weight w/ packaging for the 2 piece dba fronts and 1 piece slotted rears was mid 70's. Without the packaging, I would guess around 70-72 pounds. The stock sti rotor is approx 22 front and 18 rear. That makes it eighty. Assuming the rear slotteds are about the same weight, that about 4 maybe 5 pounds for each of the front ones - but of course I didn't actually weigh anything so that all could be way off.... ken might know and hopefully he'll inform us of the exact weight of the dba's =)

**WRXBrakes** · 01-13-2007, 03:26 PM

Quote:

Originally Posted by rmo55c

ken - nice write up - those rotors look oddly familiar =)

oh and hope the vendor status is going well. To anyone, including sirwilliam, who wants the 2 piece rotors up front go with ken. \

and that yellow is definitely more gold than i would have guessed - looks sweet. still love my blue hats though.

Well those are actually for one of your sworn enemy EVO owners - but the process is the same.

As far as weight reduction - on my really crappy scale the 1 piece DBA's weigh about 22 lbs - the 2 piece are about 19 so we'll say 3 lbs +/- my awful scale accuracy. That makes sense and I like it as the plate thickness etc is the same so you aren't losing heat mass etc.

-ken

rmo55c · 01-13-2007, 03:52 PM

Quote:

Originally Posted by WRXBrakes

Well those are actually for one of your sworn enemy EVO owners - but the process is the same.

As far as weight reduction - on my really crappy scale the 1 piece DBA's weigh about 22 lbs - the 2 piece are about 19 so we'll say 3 lbs +/- my awful scale accuracy. That makes sense and I like it as the plate thickness etc is the same so you aren't losing heat mass etc.

-ken

Actually one my best friends runs a modded evo - and might be doing brakes soon - if he does i'll have him send you a message.

01-10-2007, 03:40 AM	#1
WRXBrakes Authorized Vendor Car: 2005 STi Fav Mod: Empty passenger seat Location: Cary NC Posts: 619 IWSTI Addict since: Aug 2004 Trader Rating: (8)	Putting together 2 piece rotors I've been doing several of these so I thought I'd document it. Overall it's pretty easy but you do need 1 somewhat special tool - a micro-torque wrench. First -I'll admit that the drilled rotors are pretty hot but I needed slotted only so I had to swap hats. So put that bling in a vice w/ some cardboard to protect it. Unbolt the hat Check out my deformed nuts They are smashed out of round slightly to lock w/out loctite. 1 time use only though. Get the new slotted ring in the vice and ready w/ the bolts - (re-usable) You need a sensitive torque wrench for this small hardware - 15NM is the spec (about 11 ft-lbs if I can multiply correctly anymore) The small one has a range of 25-250 in-lbs so it's perfect Snug the nuts and then torque to spec in a criss-cross pattern and you are done. I did a few sets in no time. This ad is not endorsed by this member. Please register or login to hide this ad.

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01-10-2007, 03:57 AM	#2
sirwilliam Silver Member Car: '08 WRB SG Model D Fav Mod: All of them... Location: The Wild Serengeti Suburb Posts: 490 IWSTI Addict since: Dec 2006 Trader Rating: (4)	Good write up. Thanks! So how much are you selling the 2-Piece for...just curious b/c I can't afford them

01-10-2007, 08:10 AM	#3
rmo55c Silver Member Car: 05 WRB STi Fav Mod: PWT Points Location: St. Louis, MO Posts: 967 IWSTI Addict since: Dec 2004 Trader Rating: (2)	ken - nice write up - those rotors look oddly familiar =) oh and hope the vendor status is going well. To anyone, including sirwilliam, who wants the 2 piece rotors up front go with ken. \ and that yellow is definitely more gold than i would have guessed - looks sweet. still love my blue hats though.

01-10-2007, 12:54 PM	#4
psuLemon Spec C Club Car: 04 WRB Fav Mod: Greddy TI-C Location: Philly Posts: 1,825 IWSTI Addict since: Jan 2006 Trader Rating: (4)	Me likey long time!!!!! Too bad they are like $700 for the fronts

01-11-2007, 06:23 AM	#5
WRXBrakes Authorized Vendor Car: 2005 STi Fav Mod: Empty passenger seat Location: Cary NC Posts: 619 IWSTI Addict since: Aug 2004 Trader Rating: (8)	they are definitely not cheap - i keep balking at putting the Brembo's on my wagon partly due to cost - partly due to all that weight... My car feels way different than my friends STi - 10 lbs a corner will likely do that.

01-12-2007, 03:37 PM	#6
rmo55c Silver Member Car: 05 WRB STi Fav Mod: PWT Points Location: St. Louis, MO Posts: 967 IWSTI Addict since: Dec 2004 Trader Rating: (2)	not cheap but worth it - i don't if ken got the weight differences between the stock sti rotor and the 2 piece ones, but there is definitely some. And now, when i need knew rotors, i only need the surface and not the hub. Also they look way way sweet. I definitely felt a difference in turn in when I put these on, like the weight on the front end was much less.

01-12-2007, 04:21 PM	#8
mtskibum16 Professional STI Driver Car: 05 Subaru WRX STi Location: Montana Posts: 461 IWSTI Addict since: May 2006 Trader Rating: (1)	^^^That's what I've heard.

01-12-2007, 04:39 PM	#9
rmo55c Silver Member Car: 05 WRB STi Fav Mod: PWT Points Location: St. Louis, MO Posts: 967 IWSTI Addict since: Dec 2004 Trader Rating: (2)	I'm pretty sure its not that much - the shipping weight w/ packaging for the 2 piece dba fronts and 1 piece slotted rears was mid 70's. Without the packaging, I would guess around 70-72 pounds. The stock sti rotor is approx 22 front and 18 rear. That makes it eighty. Assuming the rear slotteds are about the same weight, that about 4 maybe 5 pounds for each of the front ones - but of course I didn't actually weigh anything so that all could be way off.... ken might know and hopefully he'll inform us of the exact weight of the dba's =)