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DIY Self drilled Brembo rotors
by
1.9aaz
on 29 Apr, 2012 22:07
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Hey guys,
Thought I would share my experience. I have been having braking issues with my AAZ rabbit swap. (too damn fast!) Rotors warping to hell/brake fade. I decided to try something I have always been curious about, drilling rotors. I designed the pattern on Photoshop and taped it to the rotor. I used a punch to mark the hole centers. Using a 1/8'' drill bit I drilled the first hole and finished off the recess with a 1/4''. I did this all with a hand drill and kept it as close to 90 degrees as possible. I threw them on the brake lathe and grabbed a block and sandpaper to remove the burs on the hole edges.
When all was said and done, I couldn't be happier with the results. I have an 85 911 I am going to try this on next. Don't be afraid to give it a whirl! Its a pretty painless process and the benefits are very noticeable.
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#1
by
zukgod1
on 29 Apr, 2012 22:13
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I've soon this a few times a well. Always had good results.
All I would suggest to people doing this is try to stay at least 1/4" from the edge to prevent cracking.
Send from my mobile thingy. Never while driving though.
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#2
by
cyrus #1
on 30 Apr, 2012 01:19
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All I would suggest to people doing this is try to stay at least 1/4" from the edge to prevent cracking.
Also, be sure to create a nice chamfer around the edge of the hole to relieve stress. The OP has done a good job, judging by the picture.
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#3
by
mystery3
on 30 Apr, 2012 02:28
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How big are your rotors front and rear? This really isn't necessary on a 2000lb vehicle with unless you've spent a lot of time and money on brake upgrading already?
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#4
by
rabbitman
on 01 May, 2012 16:08
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Are they vented or solid rotors?
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#5
by
1.9aaz
on 01 May, 2012 18:52
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Hey guys,
They are 9.5'' solid rotors. My issue was my heavy foot braking after a "spirited" run. Sometimes stop signs/turns come a little quicker then expected with 28PSI
The rotors would constantly get heat soaked and fade. I would also warp them quite frequently. I was in a DIY mood and made some RS door panels too! Came out great!
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#6
by
1.9aaz
on 01 May, 2012 18:55
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Here is a pic of the power plant herself.
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#7
by
camboscams
on 01 May, 2012 19:41
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This is wildly off topic, but what radiator and intercooler are you running. That's the best setup I've seen on here! Do you ever have any overheating problems with the smaller volume? Hats off to you my friend
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#8
by
1.9aaz
on 01 May, 2012 23:03
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Thanks! I own/operate a repair shop and do fab work as a hobby after hours. I have boosted a far share of cars in my day and really enjoy induction/exhaust work/design. The intercooler is a Mazda OEM cooler I modified to the correct outlet orientation. The radiator is also a modified OEM design. It is intended for a Mini. I have a remote oil cooler (removed the stock one) and also have a secondary cooling "finned tube" on the firewall to make up for the reduced size. I am running a custom orifice in the coolant neck in place of a thermostat. This I machined to the optimal "flow" for the cooling characteristics of my setup. I change the orifice size for summer/winter.
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#9
by
belchfire
on 13 May, 2012 19:33
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Yeah, layout can be fun trying to keep things symmetrical, balance and all. Chamfer may be good for stress but I thought that the sharp edges helped to de-glaze the pucks.
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#10
by
veector
on 14 May, 2012 07:30
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Why not upgrade to vented rotors? I have stock vented rotors up from and 200mm drums out back, the mk1 stops on a dime even from speeds over 120km/h
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#11
by
Blocksmith
on 15 May, 2012 21:40
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Why not upgrade to vented rotors? I have stock vented rotors up from and 200mm drums out back, the mk1 stops on a dime even from speeds over 120km/h
three letters: D I Y
Good job, OP. I just bought a drill press today for other stuff I have planned, but then I saw this, so I'm gonna try it for my dad's Jettas.
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#12
by
Smokey Eddy
on 31 May, 2012 20:18
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Ed Approves!
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#13
by
wolf_walker
on 08 Jun, 2012 02:06
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As cool as that is, you are still nuts not to just put good vented rotors on it and good pads.
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#14
by
R.O.R-2.0
on 08 Jun, 2012 13:53
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As cool as that is, you are still nuts not to just put good vented rotors on it and good pads.
you can tell the difference between vented and solid rotors. well, i could atleast..
i took the solid disks off my Jetta and threw some old audi coupe GT vented disks, and it stopped better..