NSX Brake Project complete
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Ultra Negro
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The legend calipers have 2 pistons 38mm and 42mm
so to get the area of a circle is radias squared times pie.
so the smaller pistons total area is 1,133.54 mm
and the larger piston is 1,384.74 mm
so total mm area of both pistons are 2,518.28mm
The nsx caliper are 40mm and 34mm
smaller piston area is 907.46mm
larger pistons area is 1,256mm
Total mm area of NSX calipers are 2,163.46mm
The 1 cl piston is 45mm so total area of the piston is 1,589.625
So the master cylinder on our cars are pushing 1,589.625mm of piston area
the nsx is 573.835 MORE area that the master brake cylinder is pushing out
the legend is 928.655 MORE of total area ..
Thats where I got those numbers
so to get the area of a circle is radias squared times pie.
so the smaller pistons total area is 1,133.54 mm
and the larger piston is 1,384.74 mm
so total mm area of both pistons are 2,518.28mm
The nsx caliper are 40mm and 34mm
smaller piston area is 907.46mm
larger pistons area is 1,256mm
Total mm area of NSX calipers are 2,163.46mm
The 1 cl piston is 45mm so total area of the piston is 1,589.625
So the master cylinder on our cars are pushing 1,589.625mm of piston area
the nsx is 573.835 MORE area that the master brake cylinder is pushing out
the legend is 928.655 MORE of total area ..
Thats where I got those numbers
while the legend is 1 40mm and 1 38mm piston
not much of a difference there
Thread Starter
Ultra Negro
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ok redid the math using the right size of the pistons
here is the formula http://books.google.com/books?id=sjd...esult&resnum=4
NSX caliper will exert 2389.54 lbs of force as opposed to 1661.6 from our standard caliper that is a 728 lb force difference which is spread out on more of the brake pad, which will increase the initial torque of the pad, that is almost 32 percent increase of braking force applied. Yes I was bored but i wanted facts to be shown.
30 percent more brake power, as well as more even brake pad wear will increase the life of rotors AND pads.
man was I bored.
and if you are really bored you can see how much force is actually required to lock the brakes up.
I didn't feel like doing that because I needed some fried chicken.
here is the formula http://books.google.com/books?id=sjd...esult&resnum=4
NSX caliper will exert 2389.54 lbs of force as opposed to 1661.6 from our standard caliper that is a 728 lb force difference which is spread out on more of the brake pad, which will increase the initial torque of the pad, that is almost 32 percent increase of braking force applied. Yes I was bored but i wanted facts to be shown.
30 percent more brake power, as well as more even brake pad wear will increase the life of rotors AND pads.
man was I bored.
and if you are really bored you can see how much force is actually required to lock the brakes up.
I didn't feel like doing that because I needed some fried chicken.
Last edited by OperationDarkie; Jul 2, 2009 at 11:51 PM.
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Ultra Negro
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From: South Holland, IL
Quick find for those who want to know as well
the rotora BBK is a 4 piston setup using 4 23mm pistons i did the math and guess what it came up as the same exact force as our stock CL pistons which is 1661.6 but that is spread out better so for best bang for the buck it would be better to buy NSX or legend calipers and use the rest of the money for pads and rotors.
Just for those who want to know
Oh forgot to take into consideration the slight larger rotor of the BBK, so its force would probably be around 2186 lbs + or - 100lbs
the rotora BBK is a 4 piston setup using 4 23mm pistons i did the math and guess what it came up as the same exact force as our stock CL pistons which is 1661.6 but that is spread out better so for best bang for the buck it would be better to buy NSX or legend calipers and use the rest of the money for pads and rotors.
Just for those who want to know
Oh forgot to take into consideration the slight larger rotor of the BBK, so its force would probably be around 2186 lbs + or - 100lbs
Last edited by OperationDarkie; Jul 3, 2009 at 12:01 AM.
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
Thank you MR.Darko for the INfo..
Are u sure you MM are right on the legend and NSX caliper piston sizes, I know 2mm does not make that much of a difference but acuraoemparts.com gave me the piston sizes I posted where did u get your numbere?
Are u sure you MM are right on the legend and NSX caliper piston sizes, I know 2mm does not make that much of a difference but acuraoemparts.com gave me the piston sizes I posted where did u get your numbere?
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Ultra Negro
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I got mine from a friend that actually works on acuras, and the sizes he told me were for the 91-96 year calipers.
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Ultra Negro
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and they stop our boat just fine, ive messed around with them and have no issues what so ever and they are better than our stock single crappy pistons.
I just bought the NSX ones because you dont have to swap what side the caliper goes on just the get the bleeder screw on top, it was a straight bolt on with no hassle
To each his own.
Nsx calipers and legend calipers are an upgrade. Period.
and they stop our boat just fine, ive messed around with them and have no issues what so ever and they are better than our stock single crappy pistons.
I just bought the NSX ones because you dont have to swap what side the caliper goes on just the get the bleeder screw on top, it was a straight bolt on with no hassle
To each his own.
and they stop our boat just fine, ive messed around with them and have no issues what so ever and they are better than our stock single crappy pistons.
I just bought the NSX ones because you dont have to swap what side the caliper goes on just the get the bleeder screw on top, it was a straight bolt on with no hassle
To each his own.
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
Can I use the brackets that came w/the NSX brakes or DO i have to use the CL brakets to hold the calipers?
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
https://acurazine.com/forums/2g-cl-2001-2003-50/legend-caliper-conversion-735475/
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Ultra Negro
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But im scared to see how rajca will be once he gets his.
Haha, feels good don't they? After i did some soft stops to warm 'em up i did nice stomp at like a 25-30 roll and i was surprised by how much i went forward knowing what i was about to do!
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Ultra Negro
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Actually the brake caliper itself isn't bad its just that the pad used in conjuction with it is too large for the single caliper which creates a hot spot in the pad which in turn creates more heat, increase brake fade as well as creating a big hot spot on the center of the rotor, therefore warping rotors.
the 2 piston caliper creates more surface area on the pad to dissapate heat, less heat means less chance for warped rotors and increased braking ability
the 2 piston caliper creates more surface area on the pad to dissapate heat, less heat means less chance for warped rotors and increased braking ability
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
Actually the brake caliper itself isn't bad its just that the pad used in conjuction with it is too large for the single caliper which creates a hot spot in the pad which in turn creates more heat, increase brake fade as well as creating a big hot spot on the center of the rotor, therefore warping rotors.
the 2 piston caliper creates more surface area on the pad to dissapate heat, less heat means less chance for warped rotors and increased braking ability
the 2 piston caliper creates more surface area on the pad to dissapate heat, less heat means less chance for warped rotors and increased braking ability
Thread Starter
Ultra Negro
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From: South Holland, IL
In 702, 808 in Dreams
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Mr. Darko - the AC delco calipers have like a 5 day delay. did it take that long to reach you? Ive been thinking of doing this upgrade for years and i could not afford them cause they were up to like $150 to $200 each caliper. rock auto has them both sides for the price of one. thanks that is a huge help. how long did it take to reach you? thanks
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Ultra Negro
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Mr. Darko - the AC delco calipers have like a 5 day delay. did it take that long to reach you? Ive been thinking of doing this upgrade for years and i could not afford them cause they were up to like $150 to $200 each caliper. rock auto has them both sides for the price of one. thanks that is a huge help. how long did it take to reach you? thanks
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
Mr. Darko - the AC delco calipers have like a 5 day delay. did it take that long to reach you? Ive been thinking of doing this upgrade for years and i could not afford them cause they were up to like $150 to $200 each caliper. rock auto has them both sides for the price of one. thanks that is a huge help. how long did it take to reach you? thanks
B A N N E D
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From: The grande.. Riverdale NJ.. Hopefully moving to skyline village in Lincoln park NJ..yes dirty jersey
Yeah one said its back ordered and shipping delayed 5 days, I belive it even said it on the website.. I was in no hurry.. I cant waqit to put them on now buy my car is getting its tranny rebuild .. I will get my car back wed and prob do the brakes next week. I have EBC green pads and the NSX calipers just gotta order some rotors!
Im suprised nobodys told you this before, but your squealers for the pads are on the wrong side. The pad with the squealers on it are supposed to go on the rear of the caliper (where you cant see it) and the one without is supposed to go on the front. The squealer is the metal bracket poking out of the pad
