Now, why do you want to do this swap? The only viable reason I could see would be FREE or almost FREE NSX Calipers. The Stock Prelude Calipers are MORE than enough with the right pads.

Heres a nice taste though!

Quote, originally posted by Craig Lowndes »

Re: RACING---Once you've LOST control, you're just a passenger along for the ride!!!

HIGH POST COUNT=UNSEXED!

and also which mounting bracket?? will the nsx bracket work???

thanks

I am not 100% sure but GS sounds right. You should be able to use the NSX bracket with it. I did with mine.

Quote, originally posted by Craig Lowndes »

Re: RACING---Once you've LOST control, you're just a passenger along for the ride!!!

HIGH POST COUNT=UNSEXED!

thanks for the help if i asked this question at cb7tuner i dont think anybody would have known

Fast+Cheap= Not Reliable

Cheap+Reliable=Not Fast

Fast+Reliable=Not Cheap

I did the full swap on my Prelude, and it is a direct bolt on for the 5th generation Prelude. I recommend ordering new caliper bracket bolts from http://www.acuraautomotiveparts.org and then going to your local hardware store and getting 1 mm hardened washers to space the NSX caliper bolts off of the backside of the knuckle so they don't hit the rotor. The Prelude caliper bolts fit, but they will only thread in about half way. Get the NSX caliper bolts.

The OEM Prelude rotors are 11.1" x 23mm thick, the Legend GS rotors are 11.1" x 28 mm thick, the same as the 1st gen NSX. Here are links to some photos:

OEM Brakes

NSX Brakes/Legend Rotors

Brian.

Modified by mugen22 at 3:27 PM 11/8/2007

http://www.KingMotorsports.com /// http://www.NorthstarMotorsports.com /// http://www.SpeedTrialUSA.com

Fast+Cheap= Not Reliable

Cheap+Reliable=Not Fast

Fast+Reliable=Not Cheap

integra GsR part out civic tein hood damper

click here to see my vouches

originally posted by NirVTEC
(That seems like overkill. I run GSR calipers with Agressive pads on my Hatch and I get whiplash every time I tap the pedal.)

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2581 posts [99%]
NW Chicagoland IL
3-8-2002
« Re: (CR-V-tech) « » 4:23 PM 11/8/2007 Reply Edit

--------------------------------------------------------------------------------

Quote, originally posted by CR-V-tech »
well i have the 95' legend GS twin piston calipers on my civic, and 95 prelude vtec rotors, i had to mill 4mms off of the mounting brackets and have the lude rotors redrilled for the 4x100 bolt pattern. works like a charm, but then again it's not on a lude. but i love the set up and the civ stops like no other! good luck on what ever upgrade you choose!

I'm sure that I will forget something, so those of you that have done this, feel free to add to the list!

Parts:
1st Generation NSX front Brake Calipers and Brackets
4 copper crush washers (you only need two, but they don't always "set" right)
2 10 x 1.25 mm Speed Bleeders (just get the Russell's from Summit)
Brake Fluid
4 hardened steel washers 1mm thick
4 Acura NSX caliper bracket bolts
1 pair of Honda OEM Prelude front brake pads (or your choice for the street or track)
2 Acura Legend GS front rotors
**2 brake pad backing plates - 3mm thick

If the calipers are old, then add the following:
3 NSX caliper rebuild kits (you only need two until you accidentally slice one of the seals)
2 sets of caliper sliders
$20 to have a local shop "pop" the pistons out (you can do it yourself, I chose to save the time)

Tools:
Jack/jack stands
Impact driver
5lb hammer
14mm box wrench
15mm box wrench (I believe this is what size the banjo fitting is?)
17mm box wrench
10mm box wrench (3/8" if you have speed bleeders)
Bleeder bottle
Drain tub

Installation is pretty straight forward (but in no way do I accept responsibility if something goes wrong!)
1. Raise the front of the car and set it on jackstands

2. Remove both front wheels

3. Remove the bottom bolt, 14mm, from the brake caliper and remove brake pads then put bolt back in

4. Using the 17mm wrench and your 5lb hammer, break the caliper bracket loose

5. Now use the impact driver on the phillips screws on your rotors, there are two of them.

6. Remove the banjo bolt and brake line from the caliper. Make sure you have a drain tub to catch all of the brake fluid that will come out of the lines and calipers

7. Remove the caliper and bracket

8. Remove the rotor

9. Clean anything that looks like it needs to be cleaned

10. Use some high temperature anti-seeze on the knucle where the rotor hat contacts it as well as on the threads of the set screws for the new rotors

11. Install the new rotors

12. Install the NSX calipers by bolting the caliper bracket directly to the knuckle. For those of you that have read about installing these on ITR's, disregard what they said about spacing the caliper off of the knuckle. You should be using brand new NSX bracket bolts with the 1mm hardened steel washers on them to bolt the bracket to the knuckle. The bolts are a little too long and if you don't space them, they will come through the knuckle and hit the rotor. If you use the Prelude bracket bolts, they will only thread in about half way. I was not comfortable with that.

13. Re-attach your brake line at the banjo fitting. Don't forget to use your new copper crush washer. Make sure to really tighten this bolt. The odds are pretty good that if you have a leak in the system, its because the copper crush washer didn't set right.

14. Remove lower caliper bolt and install your brake pads, then put the bolt back in.
** If you are using Prelude rotors, you will need to shim the brake pads to make up the difference in the rotor size. Use a 3mm brake pad backing plate on the outside of the caliper to offset the 23mm rotor and the thicker rotor.

15. Open your brake fluid reservoir.

16. Loosen the bleeder screw with the 10mm (or 3/8" if you have speed bleeders) wrench and bleed the brakes by pumping them 4 times, then refill the fluid. You will need to do this at least 5 times. If you have a vacuum bleeder, it will be helpful. At minimum, make sure you have speed bleeders.

17. Tighten the bleeder screw and the cap on your brake fluid reservoir and then really give the brakes a good amount of pressure. Check, inspect, check, inspect and check again.

18. Do the other side.

19. Road test. DO NOT GO FAR. I had two crush washers that did not set and ended up losing fluid on each road test.

20. Periodically check all of the bolts on the caliper and bracket.

There are so many more details I could get into, but that is the gist of it.
Brian.

http://www.KingMotorsports.com /// http://www.NorthstarMotorsports.com /// http://www.SpeedTrialUSA.com

Fast+Cheap= Not Reliable

Cheap+Reliable=Not Fast

Fast+Reliable=Not Cheap

5Gen OEM rotors are 25mm thick.

[FS 6/4]Prelude & H22 – New/Used, OEM/Aftermarket, JDM 4/5thGen DigitalClimateControl & FogLights, Audio
New: SMSP 2.5"ExhaustTubing + Cat + Resonator, Battery Box, GReddy Timing Belt, Unorthodox Crank Pulley, Models

I thought you had to use a 5mm shim because you had to use the lude rotors??

I have a set of NSX calipers coming my way soon, so if anyone can answer that would be great [/BillLumbergh mode off]

The Legend Rotors are 28mm thick. And I'm pretty sure the NSX Rotors are also 28mm thick.

117 said that 5thGen Rotors are 25mm thick.
I was thinking that they were 23mm thick, but maybe just 4thGen Rotors are.

Need definite answers.

[FS 6/4]Prelude & H22 – New/Used, OEM/Aftermarket, JDM 4/5thGen DigitalClimateControl & FogLights, Audio
New: SMSP 2.5"ExhaustTubing + Cat + Resonator, Battery Box, GReddy Timing Belt, Unorthodox Crank Pulley, Models

I'll never understand the fascination with these calipers though...

Yea, why would someone want NSX calipers on their car...

You would be here just to hear me say that. LOL! It figures, but we can't all have the same interest. I wonder if anyone can tell about any improvements or increased stoping distance from experience.

Modified by Televator at 11:52 AM 11/12/2007

Quote, originally posted by mugen22 »

14. Remove lower caliper bolt and install your brake pads, then put the bolt back in. ** If you are using Prelude rotors, you will need to shim the brake pads to make up the difference in the rotor size. Use a 3mm brake pad backing plate on the outside of the caliper to offset the 23mm rotor and the thicker rotor.

Quote, originally posted by Televator »

You would be here just to hear me say that. LOL! It figures, but we can't all have the same interest. I wonder if anyone can tell about any improvements or increased stoping distance from experience. Modified by Televator at 11:52 AM 11/12/2007

Yes and no! Please keep in mind that my car is 100% streetable and has the full interior, AC, Power steering and all of the other creature comforts that are stripped out of a race car. However, I judge most of it's performance based on lap times!

On the race track, I have noticed a few big advantages over the OEM brake calipers. Initial braking is more repsonsive due to the dual piston set-up. I have no doubt that some of the responsiveness came from freshly rebuilding the NSX setup, but I think a good amount of it comes from the additional torque the calipers have on the rotor. Another very large advantage is heat discipation. Because the caliper is a bit bigger and has small cooling fins plus the thicker rotor, heat is much better dispersed. This has greatly improved the life of my brake pads. I use Hawk Blues and got away with using 1.5 sets across nearly a dozen track days this year! In addition, I can run an entire 30 minute session and maintain the same feel and performance throughout. With this setup, I'm now at the limit of my tire's traction (Hankook RS2's 215x45x17 - love them) whereas when I was using the stock brakes, I had a hard time getting the brakes/grip to threshold at the end of sessions.

On the street there is very little difference. In fact, the initial bite is almost too much with Hawk HPS'. I would imagine that on less sticky tires, the front wheels would have a tendancy to lock up and/or cause the ABS to activate pretty quickly. There is no need to do this to a street car unless you have to have NSX calipers.

I was at a point where my OEM calipers needed to be rebuilt and stumbled across a set of NSX calipers and figured I would give it a try. I am extremely satisfied with the overall ease of finding parts, fit, quality and performance.

Brian.

http://www.KingMotorsports.com /// http://www.NorthstarMotorsports.com /// http://www.SpeedTrialUSA.com