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

DatsunFTW

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.

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ENT-Z

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!

cv129

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.

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cv129

What kind of budget?

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DatsunFTW

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.

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cv129

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?

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DatsunFTW

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

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takjak2

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.

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xxAGAVExx

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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DatsunFTW

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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GSS138

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?

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Elmo370z

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.

Elmo370z

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.

ban25

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!

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DatsunFTW

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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