i have a chance to pick some nsx rear caliper for pretty cheap. can they or will they fit on a itr? TIA

 

Don't know but I'm sure you could fab something up. B/c the NSX has so much weight on the rear axle much of the total braking duty is performed by the rear brakes - which is different than the ITR. All that to say, you'll have an issue on braking bias that you'll have to remedy.

 

anyone have any idea how to change the brake bias if i decide to go with this setup? so this is not a straight bolt on affair?

heres a pic of someone that did it...

 

sounds like over kill to me and a headache getting it dialed in.
just get a dremel and write NSX on your rear calipers.

 

even with a 50/50 weight distribution (as opposed to the 60/40? of an integra) the front will still do ~70% of the braking.

 

ICBW, but that actually looks to be an NSX front caliper in the photo. Either way, you can either use a bias valve or brake pads to adjust the brake bias. Preferably you'd want to use a bias valve.

Yes, the front brakes do the majority of the braking but my point is that b/c the NSX is a MR car the bias will be significantly different. The NSX is more 40/60 weight distribution.

 

maybe i wont do it then. i was getting the complete setup for a good deal. what prop valve would you use?

 

I'm sorry for bringing a thread back from the dead, but I'm just curious as to why some people are saying that the bias will be off? If the prop valve remains the same, wouldn't the bias remain the same as well even if the calipers are swapped?

 

No.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">No.</TD></TR></TABLE>

Care to explain just a little bit more?

 

P = F/A

J00're changing the area of the piston and hence the clamping force is different for same pressure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">P = F/A

J00're changing the area of the piston and hence the clamping force is different for same pressure.
</TD></TR></TABLE>

Oh ok, I see. So, if we were to find out the difference in piston sizes, we would be able to figure the exact percentage in which clamping force would increase and therefore change braking bias, right?

 

assuming the rotor size/caliper location is same...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by imola-red dc2 &raquo;</TD></TR><TR><TD CLASS="quote">i have a chance to pick some nsx rear caliper for pretty cheap. can they or will they fit on a itr? TIA</TD></TR></TABLE>

Braking capability is TIRE LIMITED in the ITR.

You can do it for bling - but it would not improve braking capability

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">assuming the rotor size/caliper location is same...</TD></TR></TABLE>

According to nsxtasy, NA1 rear caliper pistons are 43 mm. Now we're just missing sizes for: ITR rear rotor, NSX rear rotor, ITR rear caliper piston.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big Phat R &raquo;</TD></TR><TR><TD CLASS="quote">You can do it for bling - but it would not improve braking capability</TD></TR></TABLE>

Meaning the lack of traction will hinder the improvment (if any) in the braking performance?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKology &raquo;</TD></TR><TR><TD CLASS="quote">

Meaning the lack of traction will hinder the improvment (if any) in the braking performance?</TD></TR></TABLE>

A FF car like the R has a forward weight bias. This bias increases a lot under heavy braking - where probably 90% of the braking is performed by the front wheels/tires of the car.

Adding more brake bias to the rear (by using the NSX rears) would not help.

The mid-engined NSX has very different rear braking requirements.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big Phat R &raquo;</TD></TR><TR><TD CLASS="quote">

A FF car like the R has a forward weight bias. This bias increases a lot under heavy braking - where probably 90% of the braking is performed by the front wheels/tires of the car.

Adding more brake bias to the rear (by using the NSX rears) would not help.

The mid-engined NSX has very different rear braking requirements.</TD></TR></TABLE>

Wouldn't it help by reducing the load on the fronts and at the same time reduce brake temps up front along with reducing the sudden offset in the car's balance? (I'm not arguing, and sorry if I sound ignorant, I'm just curious)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKology &raquo;</TD></TR><TR><TD CLASS="quote">

Wouldn't it help by<u> reducing the load on the fronts</u> and at the same time reduce brake temps up front along with reducing the sudden offset in the car's balance? (I'm not arguing, and sorry if I sound ignorant, I'm just curious)</TD></TR></TABLE>

No - the only way you can "reduce the load" on the fronts is to reduce the weight/mass of the car.

You're forgetting about "inertia" and "weight transfer" that occurs.

Go back and read your high school physics textbook.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big Phat R &raquo;</TD></TR><TR><TD CLASS="quote">

Go back and read your high school physics textbook.

</TD></TR></TABLE>

can't mess with physics. honestly, i don't think this upgrade will be worth it. most people don't even run brake pads for the rears because the front takes most of the load.

edit: using rear oem pads of course.


Modified by nightrider at 4:49 PM 12/23/2004

 

Ok, got it. Thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nightrider &raquo;</TD></TR><TR><TD CLASS="quote">
most people don't even run brake pads for the rears because the front takes most of the load. </TD></TR></TABLE>

I find that very hard to believe...and I know for a fact that MOST people do run pads (of some sort) in the back. Quite a few people, however, do not run RACE pads in the back (myself included.) Although I don't think it's a majority.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">

Quite a few people, however, do not run RACE pads in the back (myself included.) </TD></TR></TABLE>

that's what i was saying. however, i was assuming that it was the majority for weekend racers that also daily drive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nightrider &raquo;</TD></TR><TR><TD CLASS="quote">

that's what i was saying. however, i was assuming that it was the majority for weekend racers that also daily drive. </TD></TR></TABLE>[QUOTE=nightrider]

thats not what you typed, I read your response the same way as everyone else. Your rear brakes are quite important, although they dont take the majority of the load, I dare you to take your rear pads off and try to drive around.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PYMUGENITR &raquo;</TD></TR><TR><TD CLASS="quote">[QUOTE=nightrider]

thats not what you typed, I read your response the same way as everyone else. Your rear brakes are quite important, although they dont take the majority of the load, I dare you to take your rear pads off and try to drive around.</TD></TR></TABLE>

i wasn't suggesting people to take the rear pads off. i was just suggesting more agressive pads up front with oem brake pads in the rear. i guess that's just something i would do.
&lt;----- not so hardcore.

 

well, finally i did put the 1996 nsx rear brakes on my car. some will say its a waste of money or it doesnt do anything, but i dont care. it was a waste of money to just have them sitting there. well here are the pics of it...

btw... the wheel will get refinshed...