What year/model of Acura Legend am I looking for? Can I use my TL brake pads (I have new ones sitting there ready to go) with the 2 piston Legend calipers?

Thanks,
Paul

 

Search is your friend
https://acurazine.com/forums/showthr...0&page=1&pp=25

 

quick question..for the NSX calipers, would it also be a direct bolton and would it be fine to use stock sized rotors? I know someone has done this before but i can't seem to find the thread.

 

yeah i remember when that came up and i also remember another thread about the legend calipers, but didn't someone raise the question about the proportioning valve for the ABS and that using the 2-piston caliper would screw it up or cause it not to operate to spec during an emergency....

i seem to remember something like that coming up but i suppose it doesn't really matter because plenty of people upgrade their calipers with BBKs and don't have any issues.

SSTS

 

I dont think it makes that big a difference. The TL has 1 Large piston while the legend has 2 smaller ones. It probably comes close to the same in size. Also remember the rights and lefts need to be flip floped

 

well the total piston area of the legend caliper is going to be a sizeable amount more. now the post linked above has the following:

"A TL caliper piston (assuming 45mm diameter) has a piston surface area of 1590 sq mm. The Legend caliper pistons have a TOTAL surface area of 2512 sq mm (40mm x 2) (158% more) and 2267 sq mm (38mm x 2) (143% more) "

so when you break it down the numbers are as follows (if the diameters quoted are correct and using A= pi * r^2):

TL total area: 1590 mm^2
Legend total area: 2389 mm^2

thats seems like a big increase to me (although maybe it's really not in the world of brakes, i wouldn't know), so i would imagine it definitely changes the dynamics of the ABS. now i've only had my ABS come on once or twice the whole time i've owned the car so i'm not too worried about it but it does poes an interesting question. and then with the BBKs, i wonder if anyone has ever looked into this. maybe the answer is that it's within the design margin and that it wouldn't matter until you passed 3000mm^2 worth of area per caliper (just throwing out a random number for conversation's sake). i'd be interested in finding out.

i have to see if i can dig up the piston sizes on some popular BBKs. i'll post more when i'm out of work.

SSTS

 

How about the 3rd Gen TL brakes, will they fit onto a 2nd Gen?

 

i think you need the whole steering knuckle and i think there is something different with the suspension layout that would require some more modification. this came up maybe a month ago because someone had a 3rd gen set of brakes on ebay. i don't remember everything exactly but i'm sure it will come up with the search. i think the end result was that it could be done but would require more work.

SSTS

 

Now is that the area they are pushing on or the piston area?
Also no one has complained of ill sideeffects from doing it. The few that have liked the braking alot better.

Also its not something i would worry about. Id be willing to bet teh abs pump is more than enough to modulate the brakes with in tolerance

 

Yes, just make sure the bleeder screws are pointing upward. If you follow Legend calipers' engraving, you will have bleeder screws point downward, which does not help when you try to bleed air out.
There is no issue with bigger piston surface areas messing with ABS, I have them over one year and emergency braking is never a problem.

 

yeah, you have to be right or people with the BBKs would have been reporting issues left and right. the surface area i based on the actual amount of the piston base exposed to the force of the brake fluid. obviously we know it will be much much less on the pad since it's basically only a 5mm (if that) thick cylinder pushing on the pad.

yeah, i know tons of people have BBKs, it helps to have guys like you report back too about real-life experience with emergency braking.

when i still had my taurus SHO i upgraded my brakes (i had a 1993) to the 1996 design, which was larger and had 2 pistons instead of 1 also. i never had any ABS issues and the ford ABS was crap in my opinion. always got errors in the computer and it never came on when i friggin needed it, always when stopping on a dry, warm day under moderate pedal pressure.

SSTS

 

Ford brakes are crap in general.

 

tell me about it. my mom has an 06 eddie bauer explorer and i have to put my foot on the brakes 1 block before the red lights when i see them. i don't know if it's the pads they use or the calipers or if they're just undersized or what.

SSTS

 

I plan on throwing a set of Green Stuff on my expedition after my 6 speed swap is over. They should help the pedal feel and bite greatly

 

Thanks.

Stoptech has an excellent white paper, on page 3, by using a little algebra you can get on piston caliper area in relation to stopping distance. Of course, it is just math but as long as brake bias is not dramatically biased toward the front, you can sort of see the trend: increase piston areas decrease stopping distance.
http://www.stoptech.com/tech_info/Th...%20Systems.pdf

 

I did do a search and there was no definitive answer as to:

1) Can I use the TL rotor?
2) Can I use the TL pads?

They just say that they used the Legend GS calipers and that the L and R are swapped.

Thanks,
Paul

 

i'm pretty sure it's a direct bolt on. With that in mind, it should work on the stock TL rotor. However, i think you'll have to use Legend pads now.

 

Legend calipers fit TL's front brake bracket and rotor like a glove, I am running TL's OEM pads w/o any issue.

 

TunedTL, that's exactly the info I needed. Thank you very much!

Paul

 

I just got mine today. Just need to paint them.........





OntarioTL

 

are there any benefits using the NSX calipers as opposed to the Legend calipers?

 

my boy Ravi has he NSX calipers on his CL but he also has slotted rotors and ebc green stuff so I'm sure all that makes a difference.

 

https://acurazine.com/forums/showthread.php?t=174376