Thread: Brakes are too heavy

Yes on the tires. Have you also considered what the rotational mass would be like with rotors that big as well. It's just to much for such a small car. Bigger is not always better with brakes.

wilwoods or ad22 is all you will ever need. Bigger brakes can make your car feel more sluggish if you have low power.

Does anyone knows a big rotor upgrade that i can use on my AD22 setup? I want something bigger than the 257mm rotors...

Regards,

fastbrakes makes an 11.8" kit with adapter for the stock ad22 caliper

but i would stick with either the set you have now or go with the wilwoods kuz you have better and sometimes cheaper pad selection

FWIW, the current brake set-up you have is a Nissan brake system from Europe. Bias and proportioning by Nissan engineers. Per The Brake Thread in our Tech/Info Library. Iceracer2 I think was the guy discussing them.

http://www.sr20-forum.com/information-library/30432-brake-thread-5.html#post468259

Like you, I have that same exact set-up, but per Happynole and Andreas Miko later in the thread posted, I used P10 rears which are identical to the Maxima rears but they make it easier to hook up your parking brake. Axxis Ultimate fronts, stock OEM rear pads, stainless lines and fancy fluid, correct Altima MC all from Greg V. I love the set-up and cannot imagine ever overdriving it to failure. Then again I am a slow beginner.

More importantly that system is also a clone of the set-up that Greg V used on his racing B13, right down the pads. Greg V is worlds more knowledgable than me, and if his street driving is any indication, he drives maniacally and at very high speeds on a track.

I would also *think* that changing anything from Nissan-spec on the brake system we are discussing would require the bias and proportioning to be re-adjusted with a dedicated valve(s). Requiring you to go test your brakes and set the proportioning yourself.

All that for your brake system which was designed by Nissan engineers and that you yourself state "works great."

I've got NX2000 fronts, Maxima rears, an Altima MC, NX2000 proportioning valves and stainless brake lines on my 92 SE-R.

The trouble with the Altima master cylinder is the the proportioning valves put out the same PSI as the SE-R, which is approximately 200+PSI less than the NX2000 proportioning valves.

I had a lot of trouble with rear brake bias when braking HARD at high speeds.

Switching to an NX2000 proportioning valve (I have ABS) made a big difference since my front brakes were finally getting the higher PSI they were designed for.
This set up is enough to flat spot the tires if you hit it hard. I still have rear brake bias though.

I've been thinking about the 26MM aluminum 300ZX front set up with the Infiniti M30 rotors. It's lighter and I'm hoping the 4 piston fronts will balance out my rear bias problem.

Unfortunately, brakes aren't like a penis...bigger isn't better.

I always get a chuckle when folks start talking about horsepower and brakes in the same sentence.

What's wrong with talking about horsepower and brakes in the same sentence?

The single most important factor in how large your brakes need to be for track work is how much horsepower you have (followed by drag, and lastly weight).

Or do you mean to say that people put too much emphasis on things like that when other factors are more important?

Just do NX2000 brakes an dbe done with it. No need for the LARGER diameter rotors. Don't get hung up with larger diameter when the rotor thickness matters just as much. I actually prefer NX2000 brakes to the Wilwood 11" kits in most applications with the right pads. I also think the larger rotor setup for the NX is no better than the standard rotor.

Also if you are going to USE the brakes COST is an important factor. For my money the cheaper the rotors and pads are the better. Buy the cheapest rotors you can get, bed them in properly, and throw them away when you are done!

It appears you want a combination of great performance and looks, and you seem to at least be concerned about proper brake bias and also are aware of rotational mass... This has kept you from being flamed. Anyway, your instincts are spot on, the set up you are considering is too heavy. The diamter of the NX2000 front brakes are a little larger than stock B13 brakes, but they are much thicker, this is what keeps you from having issues with the rotors warping on track days.. with 170 whp goals (as everyone else has said) you may as well stick with what you have and get better pads, SS brake lines and some top of the line fluid... forget about the bling.