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91 Brake upgrade to NA2

fenixv8

fenixv8

Experienced Member
Joined
7 April 2007
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374
Location
Ontario
I am planning on upgrading the front brakes on my nsx.

At first I thought that it was just 1991 brakes and 1998 brakes but When I took a look I realised that there are 3 different part numbers

91 NSX : 45210-SL0-023

98 NSX : 45018-SL0-J01

02 NSX : 45018-SL0-Z00

Do I want the 98 brakes or the 02? will they both fit.

Also what parts do I need for the conversion. The 3 links below are in order of 91/98/02

http://www.acuraoemparts.com/delray...X&catcgry5=FRONT+BRAKE&ListAll=All&vinsrch=no

http://www.acuraoemparts.com/delray...T&catcgry5=FRONT+BRAKE&ListAll=All&vinsrch=no

http://www.acuraoemparts.com/delray...T&catcgry5=FRONT+BRAKE&ListAll=All&vinsrch=no


Thank you
Chris
 
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Are you upgrading the caliper/bracket or just the bracket? The NA1 front caliper is actually more "powerful" than the NA2 front caliper.
 
So 02 brakes are not an upgrade?

And if so just brackets would allow for larger rotors?
 
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NA2 brakes are better than NA1. In 2002 the calipers were coated bronze and look much better. With good pads and good cooling you shouldn't need more than NA2 brakes even if you track the car unless you are running slicks, high HP, and are such a good driver that the car is now hampering you.

If you want MORE of an upgrade you can step up to any number of big brake kits like stoptech, brembo, WP pro, tarox, project mu, etc. you are looking at 4K and up.
 
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dablackgoku1234 said:
Are you upgrading the caliper/bracket or just the bracket? The NA1 front caliper is actually more "powerful" than the NA2 front caliper.
Click to expand...

+1, this is true.
However I would only recommed going this route if you also upgraded the rears. The Braking Bias will change significantly to be a FORWARD bias if you only upgrade the front rotors and brackets (keeping the NA1 caliper).

This would be opposite of what Honda did in the NA2 where they made the braking more REAR biased.
 
sigh now im even more confused.

I plan on tracking the car a bit but didn't want anything more than a oem set up no bbk.

So now should I just go with a 97 set up front and rear caliper rotor & bracket.

or replace the front braket and rotor and replace the rear bracket rotor and caliper.

Which would be optimal?
 
Don't know if you're aware of the NSX Wiki but it can be found off the red action bar at the top of most pages. If you scan through the "Modifying your NSX" section, there is a suspension section with a section on brakes and calipers .. or you could just chase this link: http://www.nsxprime.com/wiki/Brakes
It is older content that was copied over from the previous FAQ section but has some details that probably haven't changed.
 
Thank you, I have seen the wiki. Its a great read, but I do not beleive it addresses the possiblility of using the 91 larger diameter piston caliper with 97 brackets and larger rotors along with 97 rotors and caliper in the rear.

Would this be better or worse than just upgrading everthing to the 97 set up. The piston diameter in the fronts for the 91 are closer to that of the na2 type R (again not in the wiki)

I did a bit of research before, I was just hoping someone would have a straight answer.
 
The NA1 setup should be sufficient on the track with good pads. The setup you described is the 02+ NSXR brake setup, larger NA1 front piston calipers and larger NA2 rear piston calipers. If you can get a whole set of 02+ brakes, then you can do some trial and error with full NA2 vs NSXR Frankenstein. If not, I say go 02+ NSXR spec by just getting a set of used NA2 rears:

NA1 front caliper
NA2 front bracket (AS motorsports sells this for cheap)
NA2 front rotor

NA2 rear caliper
NA2 rear bracket
NA2 rear rotor
 
So for the real pertinent question:

What is your track experience?

# of track Days?

Level of skill??
 
I'm at the track 7-10 times a year depending on which of the 3 local tracks i can rent out or get to track days for. I organize track days as well. I've been tracking cars for about 11 years now. I've also taken a few track school courses.

Im no pro and still have lots to learn but I'm quite comfortable on the track and from my experience I havn't needed much more than a good oem set up with good pads. I really love this pad

http://www.endless-sport.co.jp/brake_pad/cc_rg/index.html

With my 91 Mr2 I upgraded the calipers to 93 spec and they were an amazing upgrade. With my ep3 i upgraded the the stock calipers to type R calipers and again an amazingg upgrade. My integra type R never felt like it needed any type of upgrade. For both my S2000 and DC5 I upgraded to Spoon mono block calipers, the padal feel from those were amazing but i hated the fact that you are restricted with the off set you have to run.
 
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fenixv8 said:
I'm at the track 7-10 times a year depending on which of the 3 local tracks i can rent out or get to track days for. I organize track days as well. I've been tracking cars for about 11 years now. I've also taken a few track school courses.

Im no pro and still have lots to learn but I'm quite comfortable on the track and from my experience I havn't needed much more than a good oem set up with good pads. I really love this pad

http://www.endless-sport.co.jp/brake_pad/cc_rg/index.html

With my 91 Mr2 I upgraded the calipers to 93 spec and they were an amazing upgrade. With my ep3 i upgraded the the stock calipers to type R calipers and again an amazingg upgrade. My integra type R never felt like it needed any type of upgrade. For both my S2000 and DC5 I upgraded to Spoon mono block calipers, the padal feel from those were amazing but i hated the fact that you are restricted with the off set you have to run.
Click to expand...

With that in mind Post #10 would work well. Also there are a few Aftermarket kits out there that would do nicely too:

Check out:

http://www.ct-engineering.com/ProductLineup/AcuraNSX/AcuraNSXBrakeUpgrades/tabid/937/Default.aspx

http://www.scienceofspeed.com/products/braking_performance_parts/NSX/Stoptech/big_brake_system/

Regards,
LarryB
 
Thanks Guys. one more question, are there different pad sizes for the 91 and 97 caliper set or are they the same for all years?
 
The pads should be the same size. I believe the change in part number for OEM NA1 vs NA2 pads is due to the change in braking material.
 
fenixv8 said:
Thank you, I have seen the wiki.
Click to expand...

fenixv8 said:
Thanks Guys. one more question, are there different pad sizes for the 91 and 97 caliper set or are they the same for all years?
Click to expand...

dablackgoku1234 said:
The pads should be the same size. I believe the change in part number for OEM NA1 vs NA2 pads is due to the change in braking material.
Click to expand...

Hapa88 said:
More information to answer your questions...
http://www.nsxprime.com/wiki/Brakes#97.2B_OEM_Brakes
Click to expand...

Looks like the questions you keep asking are already answered in the Wiki, as I already linked for you in post #4.

You may want to revisit the Wiki.:redface:
 
For what it's worth, I am using 1994 NA1 calipers on the front with NA2 calipers on the rear.
That way, using OEM calipers, I have the largest possible pistons in the front and also the largest pistons in the back.

(Personally, I always found the NSX brakes a bit lacking in OEM trim, especially at high speeds).

Additionally, I have upgraded the front rotors to the two-piece Racing Brake 324x28mm rotors in the front and the 330x23mm rotors in the rear.
Since both front and rear have been upgraded in the same amount, I have no problems with the brake bias.

Sort of half-way big brake kit for the NSX :)

At the moment, I am using Hawk HPS pads in the front and HP+ pads in the rear. When the fronts are worn, I will be switch back to the HP+ pads in the front also. Will just have to clean my wheels a bit more, since these Hawk pads really dust a lot.

I need very little effort on my pedal to get really good deceleration and the pedal is still very easy to modulate. It just like the fact that I get an immediate response when stepping on the brakes.
 
I don't trust racing brake for the track personally. I know some guys like them but I've seen too many hats sheared off. Not just Billy's here, but on other forums. It's a weak point on them.
 
Thank you Gentlemen.

I think I am going to try out what Goku suggested and try both the 97+ set up and the type R ish set up and see which one I like better.

Hapa I realize that the part about the pads is in the wiki and not the part about the type R ish set up. I appreciate the dali link that you posted.

I just wanted to be sure before I spent a couple thousand on brakes.
 

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