Track forum general chit chat.

[romero1990]

Originally Posted by Kelse92

If you're looking for a new ST-40 setup... Bimmerworld is a much more legit vendor and has a coupon code active that makes the price nearly the same. Just my two-cents.

nice. looks like they just activated today. Wasn't there yesterday I think

[M3 Number 86]

Originally Posted by roastbeef

What did you like about it?

Performs like srf but has firmer pedal over time. I don't bleed with this either.

[Kelse92]

Originally Posted by romero1990

nice. looks like they just activated today. Wasn't there yesterday I think

It's been off-and-on. I ended up buying a used ST-60 kit locally, but have been keeping an eye on their prices since November, the code has been sporadically active since then (less Black-friday).
Great deal, totally would have pulled the trigger on it had I not gotten the deal I did on the ST-60 setup.

[M3 Number 86]

Originally Posted by romero1990

General question about vendor. Does anyone know/buy from these guys before. Their pricing is pretty good. But hard to tell if they are any legit.

http://raceconsultingagency.com/stop...i-1684757.aspx

Also try chicane motorsports.

[M3 Number 86]

Originally Posted by derbo

You added anti knock back springs right?

Yes 4 lbs. I think can go 5 or 6. I'm not sure what the other kits use.

I called zeckhausen and had a good conversation with him. Cool dude.

[M3 Number 86]

Originally Posted by derbo

Seems like I will end up with ST40s too. Now trophies...or not..

Trophies look better LOL

[dparm]

Originally Posted by romero1990

Very interesting take. Given ST40 are in mid 2K range, I'll probably just do the BBK upgrade instead of 2 piece rotor mid-step. Same question as derbo, Trophy or not trophy. On paper, seems the only differences are the rubber dust covers?

Anodized versus powdercoated. The later will discolor and is more susceptible to chipping and damage.

[dparm]

Originally Posted by M3 Number 86

Yes 4 lbs. I think can go 5 or 6. I'm not sure what the other kits use.

I called zeckhausen and had a good conversation with him. Cool dude.

Yes, Dave is a smart guy and has always been on-point with his recommendations. Please give him your business as "payment" for the help.

[romero1990]

Originally Posted by Kelse92

It's been off-and-on. I ended up buying a used ST-60 kit locally, but have been keeping an eye on their prices since November, the code has been sporadically active since then (less Black-friday).
Great deal, totally would have pulled the trigger on it had I not gotten the deal I did on the ST-60 setup.

In that case, I feel like it might be worth waiting for Z54 to be on sale.

[b4hand]

Originally Posted by romero1990

In that case, I feel like it might be worth waiting for Z54 to be on sale.

This is what I might do

[Ximian]

Originally Posted by b4hand

This is what I might do

That was my plan too but it might be a while for you as I've never seen them below their current price (~3700).

[b4hand]

Originally Posted by Ximian

That was my plan too but it might be a while for you as I've never seen them below their current price (~3700).

I did notice they weren't on sale during black friday

[Bartledoo]

Originally Posted by b4hand

I did notice they weren't on sale during black friday

As did I. Was really hoping for it too.

[Richbot]

The Trophy finish has held up really well on my car after 70,000 miles and a few track events. I also have the ST40 front kit, with RB rear rotors. I am able to overheat them on track with DS2500's in them, if I go max-attack into every brake zone, but the DS2500 is a street pad and I don't track enough to keep a set of DSUnos or whatever handy. With thoughtful management they shed heat and come back quickly doing a lap at 7/10ths and that I cannot say about the stock brakes on track - once you've cooked them, you're cooked for a while

I also can't say the same (finish holding up well) for the painted/baked whatever finish on non-Trophy stoptechs I've seen getting heavy track use, especially the black finish I've seen a few look pretty patinated after getting hot

Similar to the "Brownbo" discoloration you get with some OEM red Brembo applications after tracking, or the M blue brakes turning greenish. The stoptechs do better than those, but they still aren't heat-proof and you'll eventually notice it on a track rat. I think the discoloration looks cool but if it bothers you, The Trophy finish doesn't do that, because it's anodized. Not sure it's worth the money (finish plus a few ounces of weight and a slightly more machined-looking, and therefore neat-looking, caliper body) but it holds up really really well and if I clean the scuzz off mine, they still look the same as they did when they were new.

They don't sell the gold rotor hats anymore I don't think, but my gold rotor hats are starting to fade a bit, more like champagne color now

They also now sell a Nickel finish similar to Brembo GTR kits blang blang

The other thing I found running the ST40 under 17's, is as much as I loved the cheaper tires, you really do get clearance down low enuogh to get rocks and such caught in the barrel. So yeah it'll clear, but, IMO, it's suboptimal from a clearance perspective, much like running the 380 kits under an 18 that barely clears the caliper, you need to check the barrels relatively often to make sure you don't machine a weak spot into them with a rock, and your crossover pipe is at more risk of being smashed by clag/rocks getting wedged at the wrong moment. It happens but its' rare, just mentioning it for completeness. I think both have their strengths. I think it's dumb, either way, to track often without a duct setup, even if it's just a hose run to the fender liner like all the OEM setups ever, or GT3 front control arm scoops, the lack of ducting on this car from the factory is dumb.

Here the STR40 kit is under my 18" TA16's:



And here they are under my 17" Apexes which are now gone because wheel whore:

[Richbot]

Oh, and stoptech apparently is now selling a 6-piston 355 kit for the front of our cars, which is rad:

https://www.turnermotorsport.com/p-5...-kit-355x35mm/

[roastbeef]

Checking supplies for a flush with the good stuff.

[Kelse92]

I'm jealous! And you just reminded me to check with my special source to see if he got the 6 bottles in stock that he was hoping to get this week from Castrol so I can stash a couple lol.

[roastbeef]

I got these from fcp euro a while back. I need to be better about flushing fluid and this stuff is expensive, so I'll be utilizing their return policy.

[Ximian]

Originally Posted by roastbeef

I got these from fcp euro a while back. I need to be better about flushing fluid and this stuff is expensive, so I'll be utilizing their return policy.

I don't think FCP plans on carrying it anymore so you wont have much luck with their return policy. If you flush yearly, cheaper fluid is fine.

[Ximian]

Originally Posted by M3 Number 86

I've run RBF, SRF, and Endless.

Rbf was just garbage. SRF is great but sometimes pedal feel was squishy. Something about low compressibility about the fluid. Endless hasn't given me issues so far.

Which RBF? There's a difference between the 600 and 660 and I've not had an issue with 660 even after overheating the stock brakes. I drain the calipers after every track weekend so that helps.

https://www.instagram.com/p/Bg9dIhVBizb

Things like that aren't doing any favors for the fluid either.

[roastbeef]

Originally Posted by Ximian

I don't think FCP plans on carrying it anymore so you wont have much luck with their return policy. If you flush yearly, cheaper fluid is fine.

I guess we'll see how they handle it. Lol

[roastbeef]

Do any of you guys get tiny bubbles when bleeding? I'm topping off the reservoir and using a pressure bleeder. Passenger rear didn't have any bubbles, but driver's rear does.