brake upgrades for p10?

[ky_infiniti2000]

I am looking for a brake upgrade to my 95 G20t. Who offers what? And what is everyone's feeling on them.

[b-b00gie]

HP Racing makes a big brake kit which has 6 piston calipers
and 12 or 13 inch rotors (cross drilled and slotted)
http://www.hpracing.com the kit runs for $1800 to
$2500 on http://www.nopionline.com depending on
the size rotor you get. go to nopi and look under
1995>>INFINITI>>G20>>Disc Brake Kit

if you're just looking for upgraded rotors they also have
PowerStop rotors there under:
1995>>INFINITI>>G20>>Brake Disc -Performance


Brembo makes a kit for the P11 G20's, not sure what the
difference is between the P11 and P10 brake systems, was
under the impression there was no difference.
http://www.brembo.com if you want to check it out.
the brembo kit is MORE expensive than the HP, but is only 4
piston, while the HP has even better 6 piston calipers...

[P10DET]

You can upgrade to Z32 brakes. They are 4 piston calipers. You have to do some screwing around though. For more info, check out Al Abadilla's car at <http://www.conecrazy.com>.

You could also check with SMC products. I know Steve either has worked out a BABK or was working on it. Kyle Davis was trying to get a group deal going to get them into production but there weren't enough takers.

Geo

[G-Forces]

Steve from SMC was going to do it anyway. But apparently he moved and the project got put on hold. I thought it was a different Kyle that was organizing it anyway. Kyle G?

[P10DET]

Yep. Kyle Gilliland is now Kyle Davis.

BTW, if everyone doesn't know, Steve Christiansen, owner of SMC is also a G20 owner. Please support this guy. He's a *big* supporter of the SR20 community.

Oh, and this isn't the suspension section, but Steve also has a P10 with Konis. It involves using some Z32 and Z31 dampers.

Geo

[ky_infiniti2000]

How can i get in contact with SMC?

[JustinP10]

http://www.se-r.net/mall/vendors.html

Here is a link to a list of aftermarket vendors on se-r.net. The only thing is, I know SMC recently moved, so I'm not sure if the phone number is still good? Hope this helps. And if the phone number doesn't work, when i get home i'll search for his new number (it was posted on the So-Cal serca list recently).

[qab5b]

dont forget that you want to make sure that you want good brake bias. If you do the fronts, you really really really should do the rear as well. If you dont, you'll have way too much braking at front and non in the rear.
Also, remember that with bigger pistons or more more pistons, you might have to increase the size of your master cylinder, or run two master cylinders. The increased need for pressure with bigger pistons and/or more pistons usually requires a more powerful master cylinder (bigger bore).
If you want the best in brakes, check out movit brake systems. They modify Porsche 911 brakes (usually the twin turbo's) to fit many makes of cars. They also include the correct machined caliper brackets. Their website is www.movit.de

[JustinP10]

OK, two questions... (sorry it's so long)

1. What is the minimum sized wheel you can run with the big brake kit, in this case say the Z32 brake upgrade. i'm thinking the 14" stockers are out of the question? I have 16's now, but i don't really like them (had them for a while, and now they are a really popular wheel) so i'm thinking of new 16's or 17s for the street, but with a BABK, i'd need to purchase track wheels and tires too, because my stock rims would no longer fit, or could a spacer be used?

2. What type of additional weight are we talking about? Lets assume the Z32 brakes again. I am thinking it's about 4-5lbs, somethilng like that, but what does it amount to as far as acceleration? I realize on track the braking would be awesome, but what about acceleration, is it going to suffer due to the added mass of the brakes? And I'm thinking that a custom babk, with baer calipers and custom lightweight rotors would weigh less, but with that setup so would my wallet

Al, how did the Z32 brakes affect your G? and would you do it again?

Thanks

[P10DET]

The Z32 calipers are aluminum and lighter than stock P10 calipers.

They also have dust boots, unlike true racing calipers such as Wilwoods.

Geo

[JustinP10]

What about the rotors? that's what i'm kinda concerned with, i'm figuring the larger size and more mass, would act similar to a heavier or larger wheel?
Just curious, I guess if i get real bored one day, I could pull a front and rear rotor off my G20, and one of each off my dad's z32? Or i could just check the archives, i'm sure it's in there somewhere too.

[qab5b]

If you are really worried about more unsprung weight, then you could have the rotors cross drilled or slotted. If you are looking at the whole scheme of things, then the amount of unsprung weight gained and its affect on handling will not make up for increased braking power, and the effect in has on lap times. Brakes are very key to turning faster lap times.

Or you could get some really cool carbon brake rotors like they use in Formula 1, they only take 6 months to make.

Also, one should take into account the availability of brake pad compounds: some caliper/rotor setups have a wide variety of street and race pads available, while others don't.

[JustinP10]

Originally posted by qab5b

Also, one should take into account the availability of brake pad compounds: some caliper/rotor setups have a wide variety of street and race pads available, while others don't.

Yeah, this is a valid concern, however I am pretty sure that the Z32 calipers have plenty of pads available. I also know that there are pads for the G20 that are very good race only pads, and with the proper fluid (I am using motul currently, and have been very happy with it so far), brake fade can pretty much be eliminated with the stock brakes, that's why i'm trying to find the negative aspects of the Z32 upgrade, to help compare to a stock sized, race pad setup to the Z32 setup. I'm also guessing with the larger brakes, less radical pads can be used to obtain the same results?

Sorry if this is way off, if so just tell me to shut up and go get a big book about brakes... would that be a Big ass brake book?

[primerAL]

Hey Justin,

You have concerns about Z32 rotor weight? It's quite heavy compared to stock. If you check out my website:

http://www.conecrazy.com/project-g20/brakes.html

Don't make fun of me because of the red GABs Because of them I bought a powdercoating rig and did them in gunmetal grey. I just bought a digicam so I'll be updating the pictures.

Whatever weight I gained from moving to heavier rotors were lost by going from 17" wheels to 16" wheels.

17x7 MASitaly MGR with Yoko A520 = 42lbs
16x7 GAB Sports with Pirelli P7000 = 30lbs

I have a couple of ideas to keep weight down:

1) There are a few used Z32 Brembo upgrade kits floating about in the various Z forums. My friend picked some up for about $1400 for a used Brembo bigass brake kit. Even though the rotors were much larger than stock Z32 rotors, they were much lighter. Problem is, you'll need to shave the rotor's OD

2) If you wanted to keep the brake upgrade under $1000, get the Z32 calipers and get custom two piece rotors. Since it's a custom rotor you can specify the OD

After doing any front brake upgrade, I suggest you get a proportioning valve to adjust brake bias. One more thing, the Z32 brake upgrade did not require upgrading of the brake master cylinder.

Al Abadilla
www.conecrazy.com
ICQ 1372065

[serguy]

>I have a couple of ideas to keep weight down:

>1) There are a few used Z32 Brembo upgrade kits floating about >in the various Z forums. My friend picked some up for about >$1400 for a used Brembo bigass brake kit. Even though the >rotors were much larger than stock Z32 rotors, they were much >lighter. Problem is, you'll need to shave the rotor's OD

Ok, so the issues here are, you have to mod your "ligher" Brembo rotors each time you have to replace them! ACK!

>2) If you wanted to keep the brake upgrade under $1000, get >the Z32 calipers and get custom two piece rotors. Since it's a >custom rotor you can specify the OD

Custom two piece rotors?? MORE COST.. we (Steve at SMC and I) looked at making a custom two piece rotor with the Z32 calipers.. and it just didn't work out.. too much cost! (that and the space was too tight for a two piece rotor and that caliper)

It was getting to the point that it was going to be a better bang for the buck to just to do a Group deal on a full SMC willwood caliper'd brake kit. (that was one of the reasons for the group deal I was trying to organize a *few* months back on the SE-R list).

A month or so after I tried to get the group deal together.. Steve (SMC) moved shops and was down for awhile.. and it seemed like interested dropped off.

If anyone out there is still interested.. I talked to SMC last week and he's still interested in doing a group deal.

I told him before we look at doing it, let's take up where we left off.. I want him to supply us with some sort of way of measuring from the stock caliper/rotor to your existing wheels, so we can see if the kit will even fit your existing wheels??

That was my main hold up from doing the group deal before (and then SMC moved)..

And.. for those interested in the Z32 upgrade.. I have a set of non-turbo Z32 calipers here at my house now. I test fitted them with my 16x7" Black Racing wheels (phantoms) on Sat. They didn't fit. I would need like a 2-3mm wheel spacer. (keep in mind, the TT version of the Z32 calipers is 4mm's wider than the non turbo ones.. so if I was to use the Turbo calipers, I'd need a 4-5mm spacer..) hope that made sense?

One of the other reasons why we strayed away from doing some kind of a kit with the Z32 brakes was size (they're REALLY wide) and weight, too heavy with the rotor stock Z32 rotors and caliper..

IF I decide to upgrade the brakes on my G20, I don't see that it will be the Z32's.

Sorry this is so long.. hope it helps answer some questions.?

Kyle..