EBC GreenStuff brake pads

MartinClan · #1 20th April 2011, 15:37

Has anyone had experience with these brake pads? I was reading an advert recently they say that they are softer than the OEM pads and are idea for uprating the brakes of cars with no servo. (Or I guess for cars with a wimpy servo like the Sportster).

They aren't cheap so I would like to find out a little more before I splash the cash....

Cheers

Robin

artyis200 · #2 20th April 2011, 16:08

hi, i use green stuff on my Lexus is200, it brakes well on saves me loads of time not having to clean my chrome wheels every 5 minutes, the claim 70% less dust adhesion, i would say they are pretty close with there statement.

Patrick · #3 22nd April 2011, 06:53

I would avoid EBC I've heard nothing but bad things about their products on other forums I frequent. Obviously this is second hand info as I've never tried them myself

GreatOldOne · #4 22nd April 2011, 07:17

The thing I regularly see mentioned about EBC - "Every Body Crashes"

That said, I had some red-stuff pads on the Jag, and I never crashed...

MartinClan · #5 22nd April 2011, 07:45

Quote:

Originally Posted by GreatOldOne

The thing I regularly see mentioned about EBC - "Every Body Crashes"

That said, I had some red-stuff pads on the Jag, and I never crashed...

Hmm - I wonder if the problem is that everyone who fits the EBC pads expect a miracle cure for thier brake problem - and of course that doesn't happen. I don't see how they could keep selling them if they don't do the job - sooner or later someone would sue. (They sell them in America too - so probably sooner).

Mind you at £50 it is an expensive experiment if they don't do the job. I will think on...

Robin

peterux · #6 21st September 2011, 07:54

Have you seen this.....?

http://www.s-v-c.co.uk/product/dual-remote-servo/

...not sure if it would be an improvement or where/how it would fit.

alackofspeed · #7 21st September 2011, 17:42

I've tried all varieties of EBC pads, and they've all been very poor in my opinion.

As an aside, their MTB disc pads are equally poor.

Patrick · #8 21st September 2011, 18:47

Quote:

Originally Posted by peterux

Have you seen this.....?

http://www.s-v-c.co.uk/product/dual-remote-servo/

...not sure if it would be an improvement or where/how it would fit.

That looks very interesting, wonder if there's a detailed installation manual available.

MartinClan · #9 21st September 2011, 19:17

Boost ratio is only 1.9:1. Mind you if you used that AND the Metro servo that would give you (where's my calculator) 3.04:1 - still not great compared to the BM's 6:1.

Robin

Patrick · #10 21st September 2011, 21:44

not great but quite a bit more. Thing is I can still lock the wheels even at speed it just requires a lot of commitment on the pedal. It would be nice if they were a tad more sensitive.

jeremy · #11 22nd September 2011, 08:23

Hi all, I have been thinking about the brakes issue.There is a solution to budget big brakes by using front calipers from a mazda rx7 with adaptor -plate and using corrado discs.With regard to the servo, what about using a universal '7 inch dual diaphragm brake booster'--have just googled that and there are chromed servos for 60-70 quid.

Chris Cussen · #12 23rd September 2011, 06:52

I think you Sportster guys have two options:
1. Go weight training to build up those leg muscles
2. Buy Brembo 4-pot brake kits. Only about £3k

GreatOldOne · #13 23rd September 2011, 07:29

Or the nice looking WMS kits that Keri on e30zone sells. They're a lot more affordable.

There's allso Hispec

http://www.hispecbrake.co.uk/

Patrick · #14 23rd September 2011, 08:12

LOL

Or Willwood they're not too bad and look nice

GreatOldOne · #15 27th October 2011, 10:49

Dual Diaphram Servo:

http://www.duksville.co.uk/products/...phrame-booster

peterux · #16 27th October 2011, 14:15

Wow that looks 'awesome' :-). Good find!

And a quick googling found the supplier....

http://www.cfrperformance.com/DRIVET...show=50&page=2

7" or 8" diameter?

They do some nice matching master cylinders in a variety of finishes.

A nice email to their CS department may yield a tech. specification and or drawing?

Mike · #17 27th October 2011, 18:36

Quote:

Originally Posted by peterux

Wow that looks 'awesome' :-). Good find!

And a quick googling found the supplier....

http://www.cfrperformance.com/DRIVET...show=50&page=2

7" or 8" diameter?

They do some nice matching master cylinders in a variety of finishes.

A nice email to their CS department may yield a tech. specification and or drawing?

A bit more googling found this info:
http://www.speedwaymotors.com/Dual-D...ter,37181.html
From what I have gathered a dual 7" gives the same boost as a 9", and is the bare minimum for a disc brake rear axle (as opposed to drums).

For those of you driving your cars, is this extra boost worth considering?

Mike · #18 1st November 2011, 15:29

Quote:

Originally Posted by MartinClan

Boost ratio is only 1.9:1. Mind you if you used that AND the Metro servo that would give you (where's my calculator) 3.04:1 - still not great compared to the BM's 6:1.

Robin

Rob

I have investigated this a bit, and am left wondering if a servo offers a constant boost, not a multiplier of foot pressure. The boost comes from the negative pressure generated by the vacuum of the inlet manifold over the surface area of the diaphram. Therefore the maximum boost is a constant (for a given vacuum): I assume the amount of that maximum boost available is controlled by the distance travelled by the push rod, otherwise the moment the brake pedal is touched the full boost will be applied?
If this is true, then the boost from a servo is directly proportional to the square of its radius. (surface area =pye x r squared). And if it has a dual diaphram then it will offer twice the boost of a single.
By this calculation a dual 7" has the same surface area as a 10" single.

Out of interest, what size is the standard BMW servo, or the Sierra servo?

GreatOldOne · #19 1st November 2011, 15:43

I'm sure it was 10-11" - a lot bigger than the little metro servo.

I have sent an email to CFR performance asking for exact dimensions and specs - specifically boost ratio.

I got an out of office reply straight back, saying they're away at the SEMA show, and they'll reply when they get back.

I wouldn't mind being the SEMA show right now. It'd certainly beat going to work...

mashtun · #20 1st November 2011, 16:23

Quote:

Originally Posted by Mike

Out of interest, what size is the standard BMW servo, or the Sierra servo?

A Sierra one is 8" (assuming the measurement isn't across the full width of the unit including the seam joining the two halves, but 8.5" if it is). The unit in an M50-engined E36 appears to be 10" (a bit awkward to measure it in situ though).