Wilwood brakes? Brake options s13

[dvs240]

Hey guys, I have a brake question. I'm looking to upgrade my brakes, but I dont want to get the z32 brakes (fitment problems, redrilling of rotors, mushy pedal feel, etc etc). I dont want q45 brakes because they are heavy. I'm interested in Wilwood brakes and you can make your own kit on Summitracing.com but I'm not technical enough to do so on my own. I was wondering if there is any brake kits or has anyone developed thier own kit that I may be able to copy. I want to be able to fit the brakes under 16's or 15's. Must be lightweight as well. IT'S A MUST i want as little unsprung weight as possible for my 240.

1989 240sx SE SOHC motor =(

[Nismo_Freak]

N/a Z32 brakes.

There is no free lunch in 4-lug brake upgrades.

[Def]

If you think a "bolt it in and forget it" Z32 upgrade has problems, then copying a Wilwood kit is NOT for you.

First of all, you'd have to be able to tell a machine shop what you needed, which would be very difficult if you aren't at least somewhat familar with technical 3 view drawings and dimensioning.

Secondly, you're looking at a MINIMUM of double the price of going full out on a Z32 swap, if not even more.

Unsprung weight is less, but it really won't be easy, and quite frankly, it doesn't sound like you've got the skills or knowledge to trudge through the project. Plus why expend all that money and effort on a dinky brake upgrade that can fit under 15 inch wheels?!?!

If you're just going to be using your car on the street, just get some better pads for your stock brakes and you'll be good to go.

[S13ChucKAT]

And who needs unsprung weight in the front.. when your rear wheels are spinning

[Nismo_Freak]

And who needs unsprung weight in the front.. when your rear wheels are spinning

Unsprung weight and rotational weight are two different measurements. Unsprung weight has no bearing on acceleration, it has direct effect on how easily the suspension does it's job (which is maintaining the maximum amount of tire contact with the road at all times). If you have alot of unsprung weight when the wheel hits a bump the suspension has no way of hindering it's movement other than the shocks dampening. As a result excessive unsprung weight can hinder the suspension's (steering system is a suspension system) ability to act.

Rotational weight, which is what you are describing, has an effect on the acceleration plane of force. Meaning de-acceleration and acceleration are both equally affected. A high amount of rotational weight also means a high amount of unsprung weight, but does not equal the entire amount of unsprung weight as suspension componentry itself adds up in fractional amounts towards the total amount of unsprung weight. Rotationing mass adds kinetic energy and potential resistance that resists the inputs (acceleration and braking).

[Def]

Just to be anal - only rotational inertia matters when looking at the rotating masses from a "spinning them up" standpoint. So a heavier 15 inch wheel can still be significantly easier to spin up than a much lighter weight 18 inch wheel.

[Nismo_Freak]

Just to be anal - only rotational inertia matters when looking at the rotating masses from a "spinning them up" standpoint. So a heavier 15 inch wheel can still be significantly easier to spin up than a much lighter weight 18 inch wheel.

Yeah, outer inertia moments have more effect. Meaning the tire itself is the final, and most effective way in reducing rotational forces.

[sxseguy]

Check out the 12.2" S13 brakes from Arizona Z Car. For almost the same price as Z32 brakes, you can bolt them right up to your car. No engineering or fabrication required.

[ruf-jason]

^not bad, do you know if they fit under 15's, I goin' for a sleeper look.