VWDiesel.net The IDI, TDI, and mTDI source.
General Information => Upgrades (non engine related ) => Topic started by: 1.9aaz on April 29, 2012, 10:07:02 pm
-
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.
(http://i49.tinypic.com/t8w412.jpg)
-
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.
-
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.
-
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?
-
Are they vented or solid rotors?
-
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 :P 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!
(http://i46.tinypic.com/2emfjux.jpg)
-
Here is a pic of the power plant herself.
(http://i49.tinypic.com/211mn1d.jpg)
-
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
-
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.
-
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.
-
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
-
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 ;D
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.
-
Ed Approves!
-
As cool as that is, you are still nuts not to just put good vented rotors on it and good pads. :)
-
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..
-
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..
True, ( I have vented rotors on my rabbit :) ) but at minimum I think it's a viable option for those who recently replaced their brakes, and for whatever reason, opted for the solid rotors, but now realize there's more to be had without replacing the nearly new solid rotors.
-
1 reason solid is good vs vented... winter slush/puddles... i had issues years ago on my addy with vented and slush puddles.. they would cool off so fast that you had to get them rewarmed to stop.. solid did not have said issue... so my winter ride keeps solid..
vented is stage 1...
10.1" is stage 2 and works pretty freeken great in old mk1 cars.. some audi 4k quattro calper carriers = same as 16v rocco.. good to go.. 4kq = 84-88 so many more in yards then 16v..
11" roddo is stage 3... i put them on my kubvan.. i owned the conversion stuff.. for years... they overkill... but throw 1000lbs in the back.. non issue to stop...
-
1 reason solid is good vs vented... winter slush/puddles... i had issues years ago on my addy with vented and slush puddles.. they would cool off so fast that you had to get them rewarmed to stop.. solid did not have said issue... so my winter ride keeps solid..
vented is stage 1...
10.1" is stage 2 and works pretty freeken great in old mk1 cars.. some audi 4k quattro calper carriers = same as 16v rocco.. good to go.. 4kq = 84-88 so many more in yards then 16v..
11" roddo is stage 3... i put them on my kubvan.. i owned the conversion stuff.. for years... they overkill... but throw 1000lbs in the back.. non issue to stop...
i LOVE the 10.1s on my GLI... they are drilled, and vented, but im not aware of a solid 10.1 rotor..
-
Hey guys,
Thanks for the feedback/comments! My reason? Because it was a learning experience and its COOL! nothing more :-) Here is an update of my intercooler system. Larger rad going in tomorrow have to make end tanks for my larger core. Hood will have a opening with induction for the top mount.
Cheers:
Andrew
(http://i45.tinypic.com/2lxhzjs.jpg)
-
I noticed very drastic braking improvments when i switch from solid rotors to vented and drilled rotors. Fit my original calipers and everything.
But, for the sake of over engineering... would these be over kill? ;)
(also too expensive)
YouTube Brembo Ceramic Disks (http://youtu.be/LrhVHA-3ZBU)