Larger OEM brake caliper & disk on Yaris

[codenamezero]

Hi, i read the Option Fans magazine a while ago, on how people improve the Echo's braking power by swapping an OEM caliper and larger diameter disk.
It was done on the Echo hatchback and the stock disk diameter is 230mm using 18V-H caliper. they've replaced it by a 20V-A caliper with 260mm brake disc.

I have the following questions:
1) I am wondering if Echo HB and Yaris uses the same caliper/disc?
2) have anyone know such method of swapping caliper?
3) where does the 20V-A caliper comes from? the magazine only mentioned the stamp code on the caliper, but however did not mention where it came from.

I'd like to do the same or similar swap on the Yaris RS, since i find it siginificantly lack of braking power compared to my Integra. Altho upgrading to a better brake pad to HAWK HP+ might solve the problem, i am still quite tempting to do the caliper swap.

[emi323i]

I'm sending my used pads to EBC in UK to have them cast greenstuff on the backing plates. I just put in a set of ss brake lines and i can feel a huge improvement. Technafit makes them.. brand new part number TOY-2500, may not show up on their site... email "Trotter Stuart" technafit<at>earthlink.net.. he'll hook you up.

I considered swapping brake calipers along with everything else, but I am not sure if this swap will require 15" wheels. I don't want to spend another chunk or money on wheels and tires + another set for the winter. I called everywhere, there are no decent pads for the early echo's...

[codenamezero]

The part number that you listed, is it the caliper number? or the brake pad number?
I know i can get better brake pads for better stopping power, but i want to do a caliper swap, for a better consistant brake feel.

And i'm not going to put SS brake lines on it since it is a daily drive, and SS line is bad for winter and a daily drive car. Unless you track your car otherwise SS is not pratical.

[emi323i]

the part number is for the ss brake lines. they're very practical because they do not flex, and increases reaction time. There are absolutely no issues with winter driving, or daily driving, and it is not just for racing. The swap is more risky since it will not necessarily be a perfect fit, and it will void your warranty. if you have more money than you can spend, send some my way... lol.. good luck

[codenamezero]

read my friend. the yaris is a totally daily drive, which will see day, night, summer and winter all year long, which will put even more stress on the SS brake line. i'm not going to install SS brake line on it. I would if is a summer drive only car.
http://www.nsxprime.com/FAQ/Performance/brakelines.htm

To buy the best SS line which have UV protection with extreme flexibility and durability, would probably cost more than a set of used caliper.

[emi323i]

Well, post back how that works out. I personally never heard of those failures mentioned in that article, but I'll keep that in mind. I had ss line son my bmw for years without any problems, altho, they were shielded with some kind of sleeve.

[emi323i]

uv protection? what the heck are you talking about? I may not be an expert, but I don't think you realize how little sun is actually directed at the brake lines. Somehow I doubt that brembo, baer, as well as a bunch of oems like ferrari, mercedes, etc., would downgrade their brake components from shitty rubber to stainless-steel... Those cars may not be driven in the winter, but there is no reason a good quality break line will fail (rubber or ss).

If you install it improperly, or have crappy fitting that are crimped on than, it's a different story. One article written by an amateur means absolutely nothing.

[emi323i]

here's some hard facts for you... these people are not amateurs

http://www.goodridge.net/usa/pdf/all...s_v_rubber.pdf

[codenamezero]

if you read the pdf that you've posted, they did not perform any test on life expectency on your SS line... they just guess, and they also guessed the rubber hose life expectency.

as for the UV part, some company uses kevlar to reinforce the brake lines, however, this material would be affected by the UV and will lose the strength with flexing, folding. in addition, dust, dirt, debrit, and salt will also gets in the cracks of the SS brake line and can cause it to fail overtime.

finally, replacing SS brake lines may improve braking slightly but not by much.
what stop a car is the force generated by


so what i'm trying to do here is to increase the area of friction by replacing a bigger caliper/disc/pad, thus increase the overall stopping power, not the tiny bit of clamping force

lets keep this to the topic i've started lol, i'm looking for caliper.

[emi323i]

try this place... I called them a couple weeks ago, and they gave me a quote for like 400/side... but I think the guy i talked to didn't understand what I needed. Let me know how much they quote you, and if they'll fit under 14" stock wheels.

http://www.taprecycling.net

I agree with the formula there... I was simply suggesting another way of increasing brake torque. Reducing volumetric expansion increases the clamping force, and a good set of pads will increase the friction coefficient. So, if one can't increase the disc radius, at least you can improve the other 2 variables.