Road course 6 piston front calipers + base rear caliper combo??
 

For you track (road course) oriented people I have pretty much a fully built brake set up on base calipers excluding lightweight rotors. Stainless lines, hawk HPS pads, and Motul RBF660.

What are your thoughts on running just a 6 piston caliper on the front end of the car? (with lightweight rotors all around) Or should I just get the bbk all around? Working with a budget but I'd also rather do it the right way.

Of course my main choice are akebono for the front with a carbotech xp10 pad all around.

As far as geometry and performance with the combination what are your thoughts?

Thank you for your input. I am open to everyone's words.

First of all the akenobo sports brakes really aren't a BBK and they are not 6 piston in front, only 4 piston in front and 2 piston in rear. I really would not recommend running an aftermarket 6 piston BBK in front and base 370 rear calipers, maybe base sport akebono 2 pistol rear calipers would be okay but I would still recommend doing a complete 4 wheel kit if possible. Also, xp10 all around isn't the best, xp10 front and xp8 on sport or r-comps is a better combo to help avoid ice mode (you don't want too aggressive of a pad in the rear). for full slicks probably could go up to xp12 front. hope this helps some!

Isn't xp10 in the rear a bit much?

Anyway, this is when we need member AP Chris to educate us. If the after market 6 pots exert the same amount of total piston pressure on the same diameter brake rotors as the OE unit,, I assume then bigger is better for heat absorption and dissipation. However, if total pressure is higher, then it may cause overly front heavy brake bias (understeer)?

I really would like to learn more too. The specifics are beyond my knowledge. I remember someone here that tracks often had AP fronts only (akebono rears, not base, however). Would like to hear about it.

What kind of budget?

I can work with a full akebono set but I was curious to know if there was a drawback of running an akebono caliper in the front and keep the base caliper in the rear. Reason I made the post was mainly educational and my front calipers are fading. The rears still have a lot of bite but braking on the straightaways was slowly being earlier and earlier. I know some drift guys run a bigger caliper in the front only just to engage the car's slide better, while having a secondary caliper in the rear for the hydraulic hand brake.

Disregard what I said about a 6 piston. I meant to encourage myself on the akebono 4 piston in the front. Like I said... mainly educational. I wanted to hear some input in this instance.

Ah I see. I think regardless of 6 or 4 Pistons, question on piston total piston pressure and the linearity of the resulting piston pressure, resulting in different brake bias, will still be the key.

Have you tried adding titanium shims? I think that's a cheap way to buy you a couple more laps maybe?

On the 23rd I'll be back on the track. I will see how the brakes perform and then decide from there.

You're going to mess up the bias. Getting the sport setup at all 4 corners is a really good deal for how well they perform.

XP8 in the rear regardless.

Looks like the track bug has gotten you, I knew it would be addicting, I'm doing my first autox in a few weeks and I want to get out on a road course too. How well did your oil temps hold up when u went to the track, do u have an oil cooler? I'm looking to upgrade my brakes as well, so in for the for all info too. :)


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Definitely! And my oil temps stayed at around consistent 240. I have a 25 row but it was also 50 degrees that day. After 7-8 laps it started rising again so I am going to upgrade the core to 34 row.

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The Akebono sport kit really is quite good and well balanced for the car. Is a 6 pot an upgrade, sure it is. I would love the AP's or a real Brembo kit. But with your pads and tires matched, the braking on this car is more than sufficient at its horsepower. Spending 5-6 grand for maybe 1.5 seconds though you better be pretty seriously competing. Can spend the money wiser and more effectively imo. I think the akebono is more in the 1500-2K range?

Im interested on how your choice of brakes hold out. Are you running any kind of ducting to the front brakes? WIth the 34 row your temps should be about 30-40 degrees cooler. Are you still running the stock csc and clutch? I been researching a decent set up myself.

One more question, have you experienced fuel starvation around hard sweeping right hand corners. I know the Z last year at sebring experienced horrible fuel starvation around most of the track.

I can't wait to get the RRP delivered and installed! At the moment, I fill up after every session (3-6 gallons to top off, usually). I make sure to bring at least two credit cards in case my bank gets suspicious of me filling up at the same pump 3 times in an hour, lol!

I still have stock clutch and csc. I have 70k miles and not one issue. I have a braided line and fluid but for all of its life I never had a clutch problem... I haven't fuel starved at my local track.

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