HPS on track?

Absolutely out of your mind if you do that.

I would like to know what model ITS car and what track you run with HP+. Because the tracks near me, if you bring HP+ to stop your car, you'll be in the kitty litter in 4 laps.

 

I already have DBA rotors.

 

Jason,
I have been told my guys who race who race in SCCA events that drilled rotors are not recommended because it will weaken the rotors (even if their made that way).

They always use non-drilled rotors. They said you can get away with slotted rotors.

Thoughts?

thanx

 

We run an ITS E30...and have run many many tracks on the east coast this year alone, from as far north as New Hampshire, and as far south as VIR. Car is dead on consistent, and the only thing it lacks is more power consistently, and is a top finisher at many tracks (we won the NY Regional this season).

I have done many many trackdays with various Subaru's over the last 4 years and nearly every time (with the exception of my own car, which ran Mintex 1155 which came with the brakes I ran), we ran the HPS's or HP Plus.....and never had an issue at all, with stock rotors or with DBA's and KVR's (both drilled and slotted versions have been used).

 

Yes,

Slotted rotors are better for tracking.

Drilled are more for looks. Most people buying big brake kits want drilled.

I'd use 13" rotors on the track. 14.1 more for show. I feel atleast.

 

Your last statement is interesting. Aren't bigger rotors always better for cooling? If so, then why use the 13" v. 14.1?

Also, aren't the Track Brembo's 13? And for a plug for the Brembo's, BJ says that their excellent as is.

Lastly, I have heard that the Viper and Corvette guys use 'Brakeman' (spelling?) brake pads. What do you guys think of these?

thanx

 

Well of course you're going to be biased.

 

It is more rotational mass. 14.1's are alright on the front. But on the rear, 13 is the biggest I would go. Personally...

 

Also: not legal

 

Just biased against taking a *street* pad to a *race* track, particualrly for racing. Hawk has some very worthy all-out race pads. HP+ isn't one of them.

I'm glad you've had success. I know of exactly zero people in the southeast that run HP+ on any car for ITS racing. The cars to beat down here are the Bimmerworld E36s. Try to keep up with them with HP+ stopping your car and you will have no brakes after 4 laps, I garuntee. Especially at tracks like Road Atlanta or CMP.

Honestly, I don't know why you don't run Blues. The Hawk list price for Blues for the E30 is only $79. And NO ONE pays list price anymore. Anyone can get 10%-20% off list from somewhere. Shop around and you can likely find them for 60something, easy. Hawk's giving those pads away practically.

At least you aren't using EBCs

 

Which rotor is better: Slotted or non-slotted?

Are they the same strength?

Do the slotted rotors dissipate more heat? But if it's weaker, is it worth the trade-off?

Also, why are drilled rotors illegal?

thanx

ps have you heard of 'brakeman or breakman' brakepads? If so, what are your thoughts on them?

 

Slotted rotors are better because they provide the advantages of drilled without the disadvantages. Drilled rotors are more prone to cracking than slotted or plain. Even the Porsche rotors (with reinforcements designed into the rotor and cast holes that are cleaned up with a bit in order to reduce stress risers) will crack more quickly under the same conditions than slotted rotors. Rotors drilled by a shop, that were not designed to be drilled, are the MOST prone to early failures. Beware Brembo "drilled" rotors that aren't really factory drilled but have been worked on after-the-fact and are sold cheaply on eBay.

The advantages of drilled and slotted rotors is that they give you improved bite for any given pad type. They can also help reduce the "air hockey" effect during the green fade that occurs when first bedding in new pads, by giving the gasses some place to go. And they tend to keep the surface of the pads free of any glazing due to overheating.

If you go to a "real" racing event, you will find that virtually nobody runs drilled rotors any more. They either run slotted or plain rotors. However, the public still STRONGLY associates drilled rotors with racing, so some Mercedes (AMG) and Porsche models come with drilled rotors.

I don't know what you mean by the comment about drilled rotors being illegal. They are certainly allowed in the United States.

 

They are not legal in the most common forms of SCCA racing (Showroom stock, improved touring, stock and street prepared auto-x classes). The highest levels like GT and Production may allow them I don't know for sure. Sorry for the confusion.

They're made (or at least used to be) by Kerr Friction Products (heard of KFP Magnum brake pad? Same thing). KFP also makes Porterfield's pads. It's all the same stuff, different box.

 

Show Car = Drilled

Race Car = Slotted

 

I want to know if the stop techs can be ordered for the Z with diffeent colors besides red or black calipers?

 

We can get them with Blue Calipers. It is $100 more.

PM me for special stop tech pricing

STOP TECH

 

thanks for all the responses on 'drilled' v. 'plain' v. 'slotted'.

Looks like the best of the three is slotted-this will be one of my future mods.

thanx again

 

Jason - Give Bob Lee a call about the two shades of blue they offer. It's no longer extra cost as of December. It just requires a 3-4 week lead time. Silver calipers are also a no-cost option.



Hollywood photographer Andrew Macpherson's BMW Z8 w/silver StopTech calipers

 

I will call and double check the info I was givin last week.

 

Don't bother! I just spoke to Bob and he confused the color issue when we last spoke. He will fulfill my order for blue calipers at the standard price (this one time) but the normal pricing for blue calipers of both shades is $200 extra per axle. So a 4-wheel kit would be $400 extra in blue. Yellow is also an extra cost color.

I'm changing my web site right now.

Sorry for the confusion!