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Old 03-28-2005, 09:13 AM   #351
BIGSKYWRX
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^^ nice- that's a good drop! I need to weigh mine (04 wagon)- I've figured I've shed close to 200 lbs (a portion of that running 1/4 tank of gas vs full and emptying the trunk of spare/tools/etc)- should be ~ 2970ish
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Last edited by BIGSKYWRX; 03-28-2005 at 09:26 AM.
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Old 03-28-2005, 03:12 PM   #352
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keep it up..
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Old 04-01-2005, 12:24 PM   #353
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I'm going to take off my brake pads' backing plates the next time I do brakes.
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Old 04-01-2005, 02:57 PM   #354
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Quote:
Originally Posted by bemani
I'm going to take off my brake pads' backing plates the next time I do brakes.
I don't know- they may be advantageous as far as heat transfer is concerned. Race shops sell custom titanium pad backing plates just for that purpose.

I think ours were designed for "squeal" resistance, but can't help but think they may help w/ preventing heat transfer as well????
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Old 04-01-2005, 07:38 PM   #355
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That would depend on the pad itself wouldn't it?
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Old 04-01-2005, 08:24 PM   #356
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i dint read the whole thread but plexiglass or lexan windows, swaybars if u only drag race, carpet, dynamat material in trunk and other places. different seats and theres a lot of other things u an do i just cant remeber alllof them right now.
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Old 04-01-2005, 09:24 PM   #357
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Quote:
Originally Posted by cencalballer
i dint read the whole thread but plexiglass or lexan windows, swaybars if u only drag race, carpet, dynamat material in trunk and other places. different seats and theres a lot of other things u an do i just cant remeber alllof them right now.
Well, it never hurts to shed unsprung weight first... there's your best way to improve handling. Trade everything under the chassis for stiff, lightweight components. Of course, for an Impreza you're talking $$$$.
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Old 04-02-2005, 11:39 AM   #358
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Quote:
Originally Posted by bemani
That would depend on the pad itself wouldn't it?
Not really- the shims should help as a thermal barrier regardless of pad choice. How beneficial this would be is purely speculative, but did find it interesting that there is a prety good market for pad backers just to provide that barrier. The barrier is more to prevent heat from the pads/rotors from going into the calipers- helping the seals and reducing fluid temp. Again how much the oe shims help in this matter (if any) is speculative..
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Old 04-03-2005, 01:39 PM   #359
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DBA has 2-piece rotors, for those of you ready to do a brake job. Get you some cryo-treated rotors & pads. I did, but I have the "Cobb Stage 2" kit, which aren't 2-piece The 2-piece rotors are "ultra-light" according to the site. I would be interested for someone to compare the weight of an un-used stock rotor with the rotor and hat from DBA. Shawn? Do you have the weight of yours?

http://www.dba.com.au/
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Old 04-03-2005, 02:00 PM   #360
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I have the DBA 5000 rotors (for the four pots- 5010 is for the oem 2pot sliders)- they are slightly oversized vs oem 295mm vs 294 and 25.4 vs 24mm, they still provide ~ 1.5 lbs/side weight reduction. The other benefit is temp reduction in the wheel bearing They are spendy, but when the discs go you just buy the outer disc and reuse the hats.
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Old 04-04-2005, 11:19 PM   #361
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Good point about protecting the wheel bearings from heat. That would push 2 piece rotors to the top of the list for weight reduction. They are a reduction in unsprung, rotating mass AND save your bearings (and life?)...all while improving the cars braking.

And they look sweet.
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Old 04-05-2005, 12:31 AM   #362
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how much did the front dba 5000's run you?
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Old 04-05-2005, 07:56 AM   #363
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Bemani is talking about the brake dust shields that cover the backside of the rotors - I think that's what he means, the shims weigh nothing - so that's pointless. I already removed my brake dust covers.. they aren't that heavy, but I figured both fronts and bolts weighed like 1.5 lbs.

Jay
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Old 04-05-2005, 09:22 AM   #364
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Dust covers are a differrent story altogether They do help w/ air getting to the bake of the rotor, I take mine off every spring (put them back on in the fall).

The 5000 run $450-500. I can't remember what the outer discs are, but pretty reasonable.
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Old 04-05-2005, 10:50 PM   #365
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Quote:
Originally Posted by Diversion
Bemani is talking about the brake dust shields that cover the backside of the rotors - I think that's what he means, the shims weigh nothing - so that's pointless. I already removed my brake dust covers.. they aren't that heavy, but I figured both fronts and bolts weighed like 1.5 lbs.

Jay
Hey, you're talking about the guy that even pulled the fog lamp fuse and has no spare fuses in the car

Anything unimportant in the interior that is held on with 4 screws, I made it down to 3 ...

So yes, I'm talking about the shims But that sounds like a bad idea so I'll give that up.

My dust shields are LONG GONE.

My next step ... get a sheet of carbon fiber and see what the hell I can replace with it.

Last edited by bemani; 04-05-2005 at 10:58 PM.
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Old 04-05-2005, 10:52 PM   #366
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Quote:
Originally Posted by exhacker
DBA has 2-piece rotors, for those of you ready to do a brake job. Get you some cryo-treated rotors & pads. I did, but I have the "Cobb Stage 2" kit, which aren't 2-piece The 2-piece rotors are "ultra-light" according to the site. I would be interested for someone to compare the weight of an un-used stock rotor with the rotor and hat from DBA. Shawn? Do you have the weight of yours?

http://www.dba.com.au/
I weighted the DBA 2 piece rotors (slotted), it was heavier than the DBA 1 piece (cross drilled & slotted). Of course, the 1 piece was used, 2 piece was new too ...

5010 (new) - 14 lb 11.2 oz
650x (used) - 13 lb 12 oz

Last edited by bemani; 04-05-2005 at 11:00 PM.
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Old 04-09-2005, 03:47 PM   #367
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Quote:
Originally Posted by bemani

My next step ... get a sheet of carbon fiber and see what the hell I can replace with it.
How about the floor of the trunk? Cut out the spare tire tub and slap some CF down.

Also in the trunk...has anybody removed the bracket for the jack? What did you use to drill out the spot welds?
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Old 04-10-2005, 01:20 PM   #368
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Quote:
Originally Posted by aspera
What did you use to drill out the spot welds?
You answered you own question
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Old 04-11-2005, 06:32 PM   #369
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They make special drill bits for drilling out spot welds. You can also get short bits. That's what I was getting at.
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Old 10-19-2005, 09:30 PM   #370
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Quick update- the FHI two pot rear upgrade is essentially a wash. The oe rear calipers w/ pads are 6.8 lbs, the two pots w/ pads 4.1 lbs- the oe rotors 9.7 lbs, the two pot rotors 12.2.

Not bad considering rotor size went from 266X10 (solid) to 290x18 (vented)
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Old 10-19-2005, 09:56 PM   #371
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Old 10-19-2005, 10:57 PM   #372
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Quote:
Originally Posted by SolidSnake
Welcome to...like 3 or 4 years ago.
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Old 10-19-2005, 11:51 PM   #373
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Quote:
Originally Posted by aspera
Welcome to...like 3 or 4 years ago.
1 year, but your welcome anyway.
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Old 10-20-2005, 01:45 PM   #374
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Well, it was posted when this was I-Club.
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Old 10-20-2005, 10:23 PM   #375
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Any one know how much the stock WRX spolier weighs?

Also someone suggested taking out swaybars if you onlydrag race.
If I am on stock suspension, can I do this for my day at the drag strip or will the car be un drivable?
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