mx5-kiwi

I have a Goodwin V3 Big brake kit on my car. Was bought used and is working pretty well.

I would like to have a set of spare discs as the ones I have are starting to wear and have a few little fractures, as race brakes are prone to get...Problem is that the replacement rotors for this particular kit are $500.00+ (approx).

As you probably know this is nearly the cost of a replacement kit from various suppliers (with MUCH cheaper replacement rotors).

So i am thinking about selling my current (front) kit off and going for a 949 racing front kit.....

Does anyone have experience with the 11.75" kit?
- will this fit in my 9" 9UL's WITHOUT spacers?
- is the increase in brake rotor actually noticeable?
- it is a circuit racing car, do I need to upgrade to the directional vane rotors (significantly more expensive) or should I just carry a spare set of plain rotors for the same/ similar price?

Appreciate any advice, experience etc.....

Seefo

iTrader: (5)

Pretty sure the 949 11.75" kit is the same or similar to the TSE kit. So you can look up info/experience about that one since its been around for a while. Otherwise, here is what I think:

1) I think a 5mm spacer is required? don't quote on me that.
2) yes I am sure it is.
3) plain rotors. Directional vane rotors are for cooling I think, so if you are not overheating an 11" kit, you probably won't be overheating the 11.75".

Otherwise, good God, those are expensive rotors!

k24madness

iTrader: (6)

Check 949 for replacement rotors. I know they have em for V4 goodwin kits. I bet the V3 is just like the standard 949 11" kit. The direction rotors are very high quality. Mine look newish after 10+ track days.

Rennkafer

iTrader: (3)

Maybe $500 with shipping?? The rotors themselves are ~$360/pr per Goodwin

Goodwin Racing 4-Wheel Miata Big Brake Kit, Version 3, FRONT Rotor Friction Ring replacement for Miata

Friction rings look to be different from the V4 by the photos on their website... 8 hole rings on the V3 vs 10 hole rings on the V4. The V3 rings are RacingBrake, have you tried to get some from them?

ThePass

iTrader: (3)

Yikes, why design a whole kit around a rotor with that kind of price tag? TSE did it right, making a kit with consumable costs in mind.

-Ryan

mx5-kiwi

Aha, I could never find that bloody link, thanks Rennkafer.

We have about 20% exchange rate and then about 20% in freight etc so it really adds up.

But the real key is that i just can't bring myself to pay $360.00 U.S for 2 rotors when I could buy the whole kit for 2 x that and have a replacement rotor cost of $35.00 U.S!!!....So I ordered the the 11.75" kit from 949.

Interested to hear of anyones experience with 11.75" kit....better pad wear, less thermal issues, better feel etc..(I am an optimist, can you tell? )

Rennkafer

iTrader: (3)

Can't argue they're pretty expensive from Good-Win, I wonder what they cost directly from RacingBrakes though.

You can't go wrong with the TSE kit though... good stuff.

z31maniac

I'm sure just as expensive. I was considering their rear 2-piece rotors for the FM Powerlite kit.......I think the rotors and hats combined were ~$550 for the pair.

And eventually when Andrew (TSE) gets his 2-piece 9.9" rear rotor setup, I'll be happier.

I'm running the 949 11" kit with directional vane rotors, and 10" FM race kit in the back. I don't think I could have a more lightweight brake setup without increasing cost exponentially.

curly

iTrader: (25)

Yes to everything from what I've heard.

I've heard nothing but amazing things from users of the 11.75" kits, they're god's brakes for miatas. Even beyond your questions of wear and thermal issues, braking feel is said to be outstanding. You will apparently not be disappointed, and I'm sure your used Goodwin kit can fetch a pretty penny somewhere on the forums.

emilio700

iTrader: (3)

For those that balk at the cost of directionals and are lured by the cost of Mexican made Wilwood economy straight vanes, the directionals do run much cooler and last longer. There is a difference. I'd say the directionals perform almost twice as well as the economy rotors in heat dissipation, longevity, durability. For the 11" kit they are a no brainer since they're only a few bucks more. For the 11.75" kit, the directionals are a ghastly 4x the price. If straight vanes get the job done for you, great. If not, you have to pony up for directionals. If we sold more 11.75 kits, we would respond by offering a $100 directional ring instead of the $140 Wilwood.

Most sub 180whp track cars can survive on 11.75 economy rotors. Get above 250whp with a fast driver on sticky tires and the econos die a quick death.

Our 11" kit with directionals and XP12's will handle a fast driver with 350whp+ just fine. Thus, we ship 40+ 11" kits for every one 11.75" kit.


Our 11.75 kit is not sourced from TSE. The brackets and hats come from V8R. The rest of the kit is proprietary. You have the option of the Mexican made straight vane 11.75 Wilwood economy rotors or or the USA made Wilwood directionals (much more $).

If you are referring to Goodwin's V3 11" kit, no. Our 11" kit is based on Wilwood hats and brackets, the rest is proprietary.

Midtenn

iTrader: (15)

Do you have data that could share that shows how much cooler and/or longer lasting the directionals are in comparison to the straights? I'm going to purchasing a BBK this winter and the replacement cost of the straight vanes is tempting, but if the directional vanes last nearly 3x as long, then its a no brainer.

z31maniac

The no brainer I got from his post is that there is no real necessity for the more expensive and heavier 11.75" setup vs the 11" setup.

emilio700

iTrader: (3)

Data not as relevant to the decision as intended usage. If it is for an autocross, drift or street car, straight vanes are fine. If you drive on track an gentle touring speeds, straight vanes are fine. If you drive on track and beat the **** out of it, you want directionals.

Savington

iTrader: (31)

Drive both back to back and then say that with a straight face. I dare you.

mx5-kiwi

Whilst we are coming from a different place, Savington and Emilio are on the right track.

As I have now purchased the 11.75" kit (well ordered and taken the hit on the credit card) ...no further commnets re the 11" kit being the same or similar (and thus I have wasted my money) will be considered!!

Only comments supporting the emotional confirmation of this amazing purchase from now on please!

I of course am now emotionally and egotistically bound to say how amazing they will be and are once they arrive.....true or not

Tolerance of naysayers will be zero.



(now i just hope i dont regret committing to the non directionals, are the top hats for the directionals and the non directionals the same...can i upgrade the rotors at a later point?)

Seefo

iTrader: (5)

^ Yes you can (change to directionals later).

emilio700

iTrader: (3)

No real downside to an 11.75 kit over an 11" kit on lower hp cars. Weight difference is minimal. Costs only a bit more. You do need more rear brake on the 11.75 kit than with the 11. I like base NA8 rear setup with 11" front. With 11.75 fronts I like 10.9" rear Sport brakes and calipers with downforce or heavy cars, or Sport rotors and NA8/NB1 rear calipers for lighter, non aero builds.