Tru dat.Actually 3 versions. Gold for 2002+ (even though I know it's the same caliper - but gold makes it another version. :tongue
NA1 brake caliper larger than NA2?
- Thread starter BATMANs
- Start date
Hi,
yeap... you can use NA2 calipers on an NA1 bracket and vice-versa.
The NA1 front caliper's pistons are 40mm and 36mm
The NA2 front caliper's pistons are 40mm and 34mm
I don't know the rear size from personal experience because i only got my hands on my NA1 ones.
also, the NA2 brackets pull the caliper 9.8mm away from the hub, due to the increased size on NA2 rotors.
another note goes to why the NA1 NSX needs spacers when use 2002+ wheels: that's because of the caliper's bracket, not the caliper position.
The NA1 bracket's outter arch is more pronounced than on NA2. The difference is very very notorious...i took a photo comparing both brackets:
NA2 -> top and NA1 -> Bottom (dirty)
Nuno
yeap... you can use NA2 calipers on an NA1 bracket and vice-versa.
The NA1 front caliper's pistons are 40mm and 36mm
The NA2 front caliper's pistons are 40mm and 34mm
I don't know the rear size from personal experience because i only got my hands on my NA1 ones.
also, the NA2 brackets pull the caliper 9.8mm away from the hub, due to the increased size on NA2 rotors.
another note goes to why the NA1 NSX needs spacers when use 2002+ wheels: that's because of the caliper's bracket, not the caliper position.
The NA1 bracket's outter arch is more pronounced than on NA2. The difference is very very notorious...i took a photo comparing both brackets:
NA2 -> top and NA1 -> Bottom (dirty)
Nuno
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What is meant by 'hang loose'? I think you have it backwards. The more you move the bias to the rear, the sooner the rears lock up. Think of too much rear bias like pulling the handbrake.
Hi,
i said "that the original NA1 brakes were bias toward the front and sometimes the rear would hang loose in a violent brake."
what i meant is if you have the rear/front ratio more balanced toward the front, then in a violent brake, the rear won't brake as much as the front and it would be somewhat loose back there... like it isn't braking as much as the car is slowing down and in consequence can harm the overall handling in a hard/violent brake... if you are entering a corner it would be even worse
Nuno
i said "that the original NA1 brakes were bias toward the front and sometimes the rear would hang loose in a violent brake."
what i meant is if you have the rear/front ratio more balanced toward the front, then in a violent brake, the rear won't brake as much as the front and it would be somewhat loose back there... like it isn't braking as much as the car is slowing down and in consequence can harm the overall handling in a hard/violent brake... if you are entering a corner it would be even worse
Nuno
WRONG.
There are two versions of the brakes, and they go by model year, NOT by engine code.
The front caliper pistons are 40 mm and 36 mm on the 1991-1996 NSX. All of these cars came with the 3.0-liter NA1 engine.
The front caliper pistons are 40 mm and 34 mm on the 1997-2005 NSX. Some of these cars came with the 3.0-liter NA1 engine and others came with the 3.2-liter NA2 engine.
OK.
Then I'll just plan on upgrading the rear brakes down the line....
Then I'll just plan on upgrading the rear brakes down the line....
OR you could get the 97 & up rotors and brackets and use your existing calipers on the front and then get the 97 & up rear complete setup.
That's indeed a good practical idea,
You could also check the rear piston specs on a Legend and 98-04 RL.
And go with Type-II fronts.
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If balanced toward the front means more front bias then it is the opposite of what you are saying.
That's what I'm thinking too. I checked oemacuraparts.com and you can't get the brackets separately though...
No it sounds right from here.
Anyway what could possibly be a potential test setup
NA1 brackets
Front - Type-II Legend caliper
Rear - 98-04 RL calipers
NA2 brackets (this will give 300mm front discs thus bais to the front)
Front - Type-II Legend caliper
Rear - 98-04 RL calipers
what my concern would be that the Type-II Calipers are to strong for the NSX and will shift the bais to much front.
Maybe we're all saying the same thing but I don't think we are. The end that locks up first is the end that has more relative bias. If you have too much front bias, the fronts will lock up first and the car will just plow through a corner. If you have too much rear bias, the rears will lock up first and you will be more likely to spin your car on corner entry.
Correct
but what he points out to much bais + abs will get the front down in de ground but not the rear end if you turn in sharp the rear will have to much momentum/mass and might spin out.
if you have to much rear bais you can still plow straight through a corner since the front end doesn't have enough grip.
NA2 setup with NA1 front calipers might also be a nice setup will add a bit more front bais.
Captain mentioned this in another thread so this is probably worth taking into consideration as well.
"
A balanced setup can transfer more weight than an unbalanced one. An overly front biased system will not transfer near the amount of weight as a balanced setup. All it will do is overpower the front tires and transfer little weight.
If we're talking about braking force for the amount of pedal pressure, that is a different story. Is that what you are referring to?
Are you referring to the brackets that were part of the cars with the NA1 engine from model years 1991-1996, or the brackets that were part of the cars with the NA1 engine from model years 1997-2005? :smile:
Although I would have expected the correct use of the NA1/NA2 designations from an NSX shop, I'm afraid it is a losing battle Ken. But I'm still gonna wage the war with you!
BTW, do you know where I can get some NA1 headlights? :wink:
I know since you what i was pointing out that you need a good balance and not over do it in ether way.
There isn't one way you can overdo it and be good (that's why it's called balance doh.. :tongue
It sounds like we still disagree. An overly front biased system does not transfers weight quicker than a balanced system. It's the same for the same amount of braking g's and is independent of the brake bias. Also, an overly front biased system actually has the most settled rear because the rear tires have more available grip than the other setups. It's the opposite of what you seem to be saying.
Sorry about the misunderstanding.
Hi,
Ken, basically you said "WRONG" and then said the exact same thing i did, only replacing NA1 with 91-96 and NA2 with 97-05...
i know perfectly what is NA1 and NA2 and what it is 5speed, 6 speed and Auto... i just wrote NA1 and NA2 because it was easier for everyone to understand...even you understood it :tongue::tongue::tongue:
about the discussion of brake bias toward the front, i agree with W, it was just a matter of interpretation and understanding...like talking about the same thing in different ways...
Nuno
Ken, basically you said "WRONG" and then said the exact same thing i did, only replacing NA1 with 91-96 and NA2 with 97-05...
i know perfectly what is NA1 and NA2 and what it is 5speed, 6 speed and Auto... i just wrote NA1 and NA2 because it was easier for everyone to understand...even you understood it :tongue::tongue::tongue:
about the discussion of brake bias toward the front, i agree with W, it was just a matter of interpretation and understanding...like talking about the same thing in different ways...
Nuno
Just to correct. The brake proportioning assembly was introduced in 2000 and is NOT shown in that diagram it's on this one. It sits right under the ABS unit. It is only mentioned once in the service manual and doesn't say what or where it is, etc. I just happened to come across it and go hunting in the parts diagrams to find it.
#6.46210-SL0-003 - VALVE ASSY., PROPORTIONING
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