Just signed up for my first HPDE event!

[Bartledoo]

Originally Posted by spooni

Glad to hear that's normal!

I'll look into the DCT pan. Is the Do88 cooling kit worth the coin?

What pads would you rec?



RBF600 already sir

There's only one thing I'm actually elitist about, and it's brake fluid...SRF. I have heard many times (in real life rather than the internet) people running motul fluid and losing the brakes at some point due to boiled fluid. They always go to SRF next. Even when I was on stock calipers, with pads so hot that my highest brake pressure wouldn't stop the car and my brakes were smoking, the SRF fluid never boiled; and I never bleed it after almost 20 track days (until putting the BBK on).

[Kelse92]

Originally Posted by spooni

I guess the reason I was lead to these is because the RE71 isn't available in the sizes I need.

But thanks for making all those points, I will not buy these when the time comes for a 100-200TW tire.

I'm really struggling to find a 265/295 or 275/295 setup. Almost nothing exists in these sizes.

Thanks for the insight - I guess it's hard to say no to cheap tires

A052 would be available in 265/295
Goodyear Supercar3 might also be, haven’t checked sizes recently.
Falken RT660 will have 18” sizes and should have 265, 275, and 295 if I recall their spec list correctly before the end of the year.

[dparm]

Originally Posted by spooni

Just did my second track day on thunderhill west! It was hotter than sh#t, but the car held up well.

A few observations:

Is 260-270 normal for oil temps during a 100 degree track day? Also noticed some shugglish shifts later in the day.

Brakes: Stock pads still... I definetely tested the limit of those. Pedal feel got "chattery" later in the day. Are track pads worth it alone? Or should I put that coin towards a BBK?

Yes, 260 oil temp is normal. Shifts can get a bit sluggish as the transmission fluid gets hot, which is dependent on the track layout and your driving style.

BBK is better over time due to longer consumable life and vastly better cooling versus OEM rotors. Plus, pad changes are super fast (it takes longer to jack up the car and remove the wheel). You can get a StopTech ST40 kit on the cheap and it uses a fairly standard Porsche 911 pad which means tons of compound choices and wide availability.

[turbo_joe]

Originally Posted by spooni

Glad to hear that's normal!

I'll look into the DCT pan. Is the Do88 cooling kit worth the coin?

What pads would you rec?



RBF600 already sir

I have no input on pads since I run a full BBK, not sure what everyone is using for the OEM setup.

Since doing the DCT pan i've had zero issues with my trans. I ran a couple weekends ago in 95 degree weather, 30min sessions and my trans was fine the whole time. Oil temps got a bit warm for my liking and I just ordered the D088 oil cooler. I also already have a Koyorad Radiator but it didn't really make a big difference.

[spooni]

Originally Posted by Bartledoo

There's only one thing I'm actually elitist about, and it's brake fluid...SRF. I have heard many times (in real life rather than the internet) people running motul fluid and losing the brakes at some point due to boiled fluid. They always go to SRF next. Even when I was on stock calipers, with pads so hot that my highest brake pressure wouldn't stop the car and my brakes were smoking, the SRF fluid never boiled; and I never bleed it after almost 20 track days (until putting the BBK on).

Thanks. I wish I would of found that out earlier

I found an ST40 kit used for $1700, thinking of picking them up then I'll go SRF!

Originally Posted by Kelse92

A052 would be available in 265/295
Goodyear Supercar3 might also be, haven’t checked sizes recently.
Falken RT660 will have 18” sizes and should have 265, 275, and 295 if I recall their spec list correctly before the end of the year.

Ok, thanks!

Originally Posted by dparm

Yes, 260 oil temp is normal. Shifts can get a bit sluggish as the transmission fluid gets hot, which is dependent on the track layout and your driving style.

BBK is better over time due to longer consumable life and vastly better cooling versus OEM rotors. Plus, pad changes are super fast (it takes longer to jack up the car and remove the wheel). You can get a StopTech ST40 kit on the cheap and it uses a fairly standard Porsche 911 pad which means tons of compound choices and wide availability.

Got it.

Ironically enough, I'm being offered a used ST40 kit for $1700, what say you?

Originally Posted by turbo_joe

I have no input on pads since I run a full BBK, not sure what everyone is using for the OEM setup.

Since doing the DCT pan i've had zero issues with my trans. I ran a couple weekends ago in 95 degree weather, 30min sessions and my trans was fine the whole time. Oil temps got a bit warm for my liking and I just ordered the D088 oil cooler. I also already have a Koyorad Radiator but it didn't really make a big difference.

Any idea on where to buy that pan? I can't find anything

[spooni]

I've also found a website selling Stoptech for a healthy amount off of list.. is it worth going for the 6-piston 380mm? and would that kit fit under my 18in Apex EC7s?

[dparm]

Originally Posted by spooni

I've also found a website selling Stoptech for a healthy amount off of list.. is it worth going for the 6-piston 380mm? and would that kit fit under my 18in Apex EC7s?

I don't think the 6-piston setup clears the non-forged 18" wheels, maybe @kelse92 can confirm.

The 4-pot setup is still very capable so if you can get a used one for $1700, do it.

[turbo_joe]

Originally Posted by spooni

I've also found a website selling Stoptech for a healthy amount off of list.. is it worth going for the 6-piston 380mm? and would that kit fit under my 18in Apex EC7s?

Check Apex’s website but I am 99% sure those wheels clear. I have 18X10” Apex SM10s for the street and 18x10.5” Apex EC7-R (forged line up) and both clear my Stoptech ST60s with a good amount of room

[turbo_joe]

Originally Posted by spooni

Any idea on where to buy that pan? I can't find anything

I know he started selling them on eBay and he does group buys here on the forum. I might have spelled his name wrong but if you search about DCT pans you will find it.

[slowdown_dan]

Endless 650 fluid is pretty top end, worth considering since everyone having moist underwear for the srf makes it pretty tough to find.

Another option to consider is pfc dd rotors (a little over a grand for the fronts). This is the same rotor you'd get in pfc's expensive top end kits, albeit stock size. If you run track pads, a 650 degree fluid and brass caliper pin bushings I don't think you'll run out of brake and wish you had the st40 kit. However, there won't be the cool ass sticker on the caliper so you'll miss out on 1000 cool guy points, and pad changes take 5 min a wheel.

[tsk94]

Originally Posted by butte2butte

Endless 650 fluid is pretty top end, worth considering since everyone having moist underwear for the srf makes it pretty tough to find.

Another option to consider is pfc dd rotors (a little over a grand for the fronts). This is the same rotor you'd get in pfc's expensive top end kits, albeit stock size. If you run track pads, a 650 degree fluid and brass caliper pin bushings I don't think you'll run out of brake and wish you had the st40 kit. However, there won't be the cool ass sticker on the caliper so you'll miss out on 1000 cool guy points, and pad changes take 5 min a wheel.

The Endless fluid is superior. Period.

[Bartledoo]

Originally Posted by tsk94

The Endless fluid is superior. Period.

The endless has a wet boiling point 100 degrees lower than SRF.

[tsk94]

Originally Posted by Bartledoo

The endless has a wet boiling point 100 degrees lower than SRF.

There's a lot more to fluid then boiling points. I've rarely heard of people that have used both and preferred the Castrol. And from personal experience the Endless is far superior.

[Bartledoo]

Originally Posted by tsk94

There's a lot more to fluid then boiling points. I've rarely heard of people that have used both and preferred the Castrol. And from personal experience the Endless is far superior.

Fair enough. I guess it depends how often you want to bleed/flush as well. A lot of people eventually slack off.

[tsk94]

Originally Posted by Bartledoo

Fair enough. I guess it depends how often you want to bleed/flush as well. A lot of people eventually slack off.

That's also a good point. Assuming you rarely bleed or flush the system, a higher wet boiling point is advantageous. Otherwise the dry boiling point is a more realistic indication of 'actual' performance whereas wet is closer to a worst case scenario.

The Endless fluid has such a better pedal feel that it's worth the sacrifice of a lower wet boiling point. That being said, the Endless's boiling points are in line with most quality 650/660 brake fluids, how many people actually have issues with boiling these types of fluid? In general not many.

[Kelse92]

Originally Posted by dparm

I don't think the 6-piston setup clears the non-forged 18" wheels, maybe @kelse92 can confirm.

The 4-pot setup is still very capable so if you can get a used one for $1700, do it.

Apex’s Clear my ST-60 Kit. I have the EC-7’s but I think ARC-8’s are supposed to fit too. The only 6-piston kit that I’m aware of that tends to have 18” wheel fitment issues is the Brembo kit with ARC-8’s due to how their caliper is designed.

Originally Posted by spooni

I've also found a website selling Stoptech for a healthy amount off of list.. is it worth going for the 6-piston 380mm? and would that kit fit under my 18in Apex EC7s?

The ST-40 vs ST-60 debate to me personally depends on the tracks you drive and the cost you want to spend on pads. I was going to go with ST-40 originally, but got a killer deal on a used ST-60 set locally that I couldn’t pass up on but part of me wishes I had ST-40’s every time I buy pads lol

Originally Posted by tsk94

The Endless fluid is superior. Period.

We can agree to disagree on this one. I’m an SRF fan here. Hasn’t given me a problem yet and I do mine every 6-ish months depending on my amount of track use. Could probably even go longer if wasn’t taking my car to a track or autocross nearly every weekend.

[dparm]

The value proposition for SRF always comes back to this: it does not need constant flushes to maintain good performance. The time to do a flush is not trivial and therefore it's not something I want to do any more than I have to.

I flush it once a year and have gotten lazy and gone even longer.

[Bartledoo]

Originally Posted by dparm

The value proposition for SRF always comes back to this: it does not need constant flushes to maintain good performance. The time to do a flush is not trivial and therefore it's not something I want to do any more than I have to.

I flush it once a year and have gotten lazy and gone even longer.

Yup. Basically my first two priorities are 1) not losing brakes due to boiled fluid, and 2) not bleeding and only flushing once a year. SRF makes these easily go hand-in-hand. I don't need any better pedal feel.

As you said we're lazy though, so this is what we need. I also prefer to open the various fittings of the brake system as few times as possible to avoid risk of damage. Call me paranoid, but I break things.

[tsk94]

For me the pedal feel from the Endless is worth it, and considering both fluids are the same price it's the obvious choice for me. I've never had an issue with boiling ~650 level fluids but my cars have always run ducting which probably plays a role. After many years of driving a E36 with unassisted brakes the firmer pedal from Endless fluid on the E92 was a very welcome addition.

[tsk94]

Originally Posted by Kelse92

Apex’s Clear my ST-60 Kit. I have the EC-7’s but I think ARC-8’s are supposed to fit too. The only 6-piston kit that I’m aware of that tends to have 18” wheel fitment issues is the Brembo kit with ARC-8’s due to how their caliper is designed.



The ST-40 vs ST-60 debate to me personally depends on the tracks you drive and the cost you want to spend on pads. I was going to go with ST-40 originally, but got a killer deal on a used ST-60 set locally that I couldn’t pass up on but part of me wishes I had ST-40’s every time I buy pads lol



We can agree to disagree on this one. I’m an SRF fan here. Hasn’t given me a problem yet and I do mine every 6-ish months depending on my amount of track use. Could probably even go longer if wasn’t taking my car to a track or autocross nearly every weekend.

I don't think the SRF is a bad fluid, by any means. I simply feel the Endless is better. There's always caveats though. Like others have mentioned if you don't want to be bleeding brakes often then yes the SRF has a clear advantage over the Endless in that regard. Just like the Endless has a clear advantage in a consistently firmer pedal feel.

The SRF is popular for a reason, because it's good - I just think the Endless is better, but it's a trade-off.

[TrAcK TRaP]

Originally Posted by tsk94

That's also a good point. Assuming you rarely bleed or flush the system, a higher wet boiling point is advantageous. Otherwise the dry boiling point is a more realistic indication of 'actual' performance whereas wet is closer to a worst case scenario.

The Endless fluid has such a better pedal feel that it's worth the sacrifice of a lower wet boiling point. That being said, the Endless's boiling points are in line with most quality 650/660 brake fluids, how many people actually have issues with boiling these types of fluid? In general not many.

Used both and endless is great brake fluid but castrol srf is better for sure it last all year without flashing it. Even you can do so many track days. Wet boiling point shouldnt be important for you but its a big deal for many track rats

[tsk94]

Originally Posted by TrAcK TRaP

Used both and endless is great brake fluid but castrol srf is better for sure it last all year without flashing it. Even you can do so many track days. Wet boiling point shouldnt be important for you but its a big deal for many track rats

Like I said, it's a trade-off. If you're someone that doesn't want to bleed/or doesn't bleed your brakes often then I agree that the SRF has an advantage.

I bleed my brakes after every, or every second event out of habit so this isn't a concern for me.