5 Lug Kit Blow out sale

[Dj Buttchug]

Anybody want to get down on a group buy??

ill do this

[elcoy]

Anybody want to get down on a group buy??

[Zekerbox]

Still have any kits left?

[diesekte]

On the drivers side the inner bearing race stayed behind and won't budge....dremel, or easier way?

[diesekte]

What additional nuts/bolts do I need to mount the adapter brackets and new calipers? In the process of doing this now so if someone could tell me asap that would be appreciated

[ApexGoblin]

Also just for reference if you were to run e46 m3 front and rear rotors and calipers the brake bias would be .652

Cheers!

[ApexGoblin]

I'd like to note that running the brake bias of the converted brakes to some may be a more desirable set up. Front brakes are designed to have more braking to prevent tail happy braking. I was simply showing the numbers and how it would change, as I have not yet driven my car with the new brakes installed I cannot say if the new bias is better. It may very well be better, but if you were attempting to keep the brake bias the same as stock just based on rotor and pad dimensions you would have to run a more aggressive pad in the rear. Keep in mind also this is not a full comparison of acting variables, certain cars will feel different because braking performance is also dictated by the tires being used, and the shifting weight of the vehicle under braking.

I was merely providing a data point. Brakes will have to be tuned by the individual, either using bias valves or changing pads. The short of it is you can run this set up as is without changing a thing, if you feel you needed more rear brakes I simply showed how.

[ApexGoblin]

When I ran it through the calculation I did it first with a pad friction coefficient of .4 for both front and rear. Stock e30 caliper, rotor, and pad sizes yielded a brake bias of .653, these converted brakes ran a bias of .711 . When I changed the pad coefficient on the e46/e39 brake system to .4 front and increased the rear coefficient to .52, essentially running a more aggressive pad in the rear, the bias ratio yielded .654 almost the same as stock.

[tinkerputzer]

Something here doesn't make sense, it sounds like apexgoblin is talking about increasing the rear brakes ability while jb325is is reducing it? Wouldn't you want to limiter for the front brakes?

[ApexGoblin]

http://www.wilwood.com/MasterCylinde...emno=260-12627

Any pictures of where you have this installed on the car?

Cheers

[Jb325is]

http://www.wilwood.com/MasterCylinders/MasterCylinderProd.aspx?itemno=260-12627

[darvo]

Part # or link?

[Jb325is]

FYI i did a brake bias check and there is an 8% difference in front brake bias with this set up compared to stock. From what I was able to calculate stock brake bias is around .653, with the e46 m3 front brakes and e39 rears brake bias would be around .711. To even it back out close to stock you would either have to run a brake proportioning valve, or (easier method) run more aggressive pads in the rear than in the front. for example a regular street pad up front with coefficient of .4 and a rear high performance street pad with coefficient of .52 yielded results almost identical to stock braking. At least if you're trying to mimic the stock bias.

I run a rear limit valve, which you can get for ~$50 from IE or Summit. I don't quite have it dialed in yet, but it's close

Diesekte: I took a few pics while installing the fronts:

http://www.r3vlimited.com/board/showpost.php?p=4247879&postcount=260

[diesekte]

Anyone have any pics of install process or other instructions....going to try this next weekend and I don't want to screw anything up

[ApexGoblin]

FYI i did a brake bias check and there is an 8% difference in front brake bias with this set up compared to stock. From what I was able to calculate stock brake bias is around .653, with the e46 m3 front brakes and e39 rears brake bias would be around .711. To even it back out close to stock you would either have to run a brake proportioning valve, or (easier method) run more aggressive pads in the rear than in the front. for example a regular street pad up front with coefficient of .4 and a rear high performance street pad with coefficient of .52 yielded results almost identical to stock braking. At least if you're trying to mimic the stock bias.