well im upgrading my brakes, i have Si ones anyways, i found some legend ones for a good price, was wanting NSX ones, but im being told that actually the larger piston in the legend one is bigger than the NSX, logically this makes snse being that the legend is a heavy *** car, more power needed to stop where as the NSX is much lighter...for the 300 plus difference the NSX ones dont seem worth it to me? thoughts on this?

 

I did the Legend caliper upgrade and I am glad I did. NSY calipers are not necessary since they cost more. They don't give any better stopping power.

 

i agree, i did the legend caliper upgrade, and im really happy with it. they are equal or better performance wise, yet carry a way different price tag. plus, you dont wanna look like a poser with nsx on your lude!
marsh

 

i'm in the middle of doing the legend caliper upgrade. well, i just bought brembo vtec rotors (i have an si) and the a set of 94/95legend gs calipers on the way w/stainless steel brake lines on the way also.

 

what do u need for the swap?
i have aem big brake rotors and i want those calipers i just dont know what i need.. maybe just the vtec adapter bracket for the aem rotors... but see how the caliper doenst bite on the entire rotor already... maybe the ledgend one will bolt right up no prob???

 

Boosted, u should sell the big brakes and get a set of brembo blanks. that slotted cross drilled stuff is just for looks.

 

ehhh la mains use em..

 

so whats the deal? all i need is legend cal. and just bolt them on? junk yard? and how muchdo they go for? i put power slots on my 96 si but i wanted biger cal. but dont want some big brake kit. let me know thanks

 

as far as I know, the cross drilling and slotting is only for looks on street driven cars. For lemans, probably the speed of the car causes the rotor to heat up to a nice red color, and the holes and slots may help to cool, but I heard they are there to prevent gas buildup between the rotor and the pad.

On your car, you won't need that kind of thing, and in addition, the holes mean you have less surface area, so your stopping power is decreased.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mt23vtecbb2 &raquo;</TD></TR><TR><TD CLASS="quote">so whats the deal? all i need is legend cal. and just bolt them on? junk yard? and how muchdo they go for? i put power slots on my 96 si but i wanted biger cal. but dont want some big brake kit. let me know thanks </TD></TR></TABLE>

No, you need VTEC rotors to accommodate the legend calipers but its still simple

 

Sort of...stopping power would be dependent on the mastercylinder, and the brake torque that is applied to the calipers and ultimatley, the pistons that provide the torque. The holes decrease surface area, so you're rotors are likely to hold *more* heat in, causing more brake fade. Think of your heat sink on your CPU. The more surface area, the more heat it can hold without becoming heat soaked.

Holes/slots do nothing to cool...they are mearly there to keep gases from building up on older asbestos based pads (now obsolete), as well as scrape them under braking when they glazed over. They do *nothing* for cooling...And they do *nothing* to help apply the brakes harder.

David

 

thx for clearing it up

 

 

hmmm... cross drilled and slotted don't add any cooling properties. hmm lets think about this one. brakes pressing against less surface area allowing more air to escape. brakes use friction to stop causing alot of heat. air can flow through the holes and slots allowing the hot air to rise as it tends too as most people know and also how come then do crossdrilled have a tendacy to crack in cold climates if they don't cool faster then stock???? Truth be told they cool faster but not that much faster. if you want to see a good brake kit look at the mugen brake kit now those have very good cooling properties. not sure if they have it for a lude yet. how many piston is the legend. the nsx is two piston isn't it also the bigger your rotors add weight you don't need oversized rotors cuz vtec size should be just fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PilotSi &raquo;</TD></TR><TR><TD CLASS="quote">Holes/slots do nothing to cool...they are mearly there to keep gases from building up on older asbestos based pads (now obsolete), as well as scrape them under braking when they glazed over. They do *nothing* for cooling...And they do *nothing* to help apply the brakes harder.David</TD></TR></TABLE>

You're right about the gas buildup and scraping glaze off the pads, but as far as doing nothing for cooling that's wrong! Cross drilling has a definate cooling effect, although you need to pipe air onto the rotors to fully utilize the fact.....
I guess ferarri and all those other manufacturers just do it for the looks eh?
Brian

 

thats what i said... dont listen to me though...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PilotSi &raquo;</TD></TR><TR><TD CLASS="quote">*more* heat in, causing more brake fade. Think of your heat sink on your CPU. The more surface area, the more heat it can hold without becoming heat soaked.
</TD></TR></TABLE>

not true...

Look @your heat sink again...is it just a flat piece of metal sitting on top of your ECU?? No, it has prongs, ripples...increasing what is known as *exposed* surface area..

ie; more of the part is exposed to air.

Slots/drills do increase cooling...is it necessary on a street car...No

 

you can argue about crossdrilled/slotted, bigger, whatever...

Truth is, no prelude needs nothing more than VTEC rotors, VTEC/LEGEND/NSX calipers... Good pads, like Cobalt's GT-Sports or Axxis ultimates are a must for great street/track performance

Spend what you want.. But I can think of about a 1000 more things to help the car other than slotted/drilled doodaded rotors..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda318dx &raquo;</TD></TR><TR><TD CLASS="quote">you can argue about crossdrilled/slotted, bigger, whatever...

Truth is, no prelude needs nothing more than VTEC rotors, VTEC/LEGEND/NSX calipers... Good pads, like Cobalt's GT-Sports or Axxis ultimates are a must for great street/track performance

Spend what you want.. But I can think of about a 1000 more things to help the car other than slotted/drilled doodaded rotors..</TD></TR></TABLE>
exactly...i have old Si brakes, so i need new ones anyways, and id rather get the legend calipers since theyre 2 piston calipers, thus the apply pressure more evenly, better braking, and the pistons in them are bigger than the NSX ones, basically the NSX upgrade would be a huge waste of money, im getting some brembo blanks from mike im sure, and then adding the Legend calipers, since i found them for 25 a piece...hey Corey, im getting into road racing, should i go ahead an add SS lines?..also im looking at replacingmy 10 year old bushings with an ES master kit...what do u think..thanks

 

Bushings = big PITA, and my LCA ES bushings have "fallen" apart in about 2 races, the rest seem ok..

SS lines are not needed for driving schools and so forth, but they are nice to have.. Get them if you want, but not required..

 

Ultimately, its the tires that stop you, not your brakes. So if you can lock up your tires whenever you want, and you dont have any fade issues, you dont need anything other than good pads and high temp fluid.

I like it when people stimulate the economy.

 

first let me start by saying something i've been wanting to point out on a message board for a looooonng time:

friction is independent of surface area.

if your brake cylinder puts out, say, 600 psi, then it doesn't matter how big your pads are, or how many slot or holes are in you rotor, the amount of force will be the same. So drill away, and you don't have to worry about losing stopping power.

as for whether or not the holes are going to cool your brakes it's hard to say. it's true your gaining cooling area, but you're also making your heat sink smaller. drill holes in you rotor, and it'll be hotter for the same amount of braking. So your holes had better be REALLY efficient. For my autocrossing, i just have plain jane rotors, and never have even a hint of brake fade. And if you look, alot of race cars have rotor that are just slotted in order to keep the brake pad surface fresh and flat.

yeah, i do think that the expensive cars have drilled brakes just for looks.

 

I read some where that you need some type of bracket to run the legend calipers on a SI, and I hear that you can only get them on Vtec calipers? is this true?

 

The bracket you need depends on what rotor you will be using. If your rotor is 23mm wide, you need a 23T bracket, if you rotors is 25mm wide, you need a 25T bracket, etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chinchilla &raquo;</TD></TR><TR><TD CLASS="quote">I read some where that you need some type of bracket to run the legend calipers on a SI, and I hear that you can only get them on Vtec calipers? is this true?</TD></TR></TABLE>

yes, you need vtec rotors for the swap to work. I haven't heard about a bracket, but the post above mine explains it. I'll let ya know as I intend on doing this shortly