Track forum general chit chat.

[radiantm3]

Originally Posted by Redd

Anyone here running Brembo GT brakes for track? Do you need to double pump to get full pedal pressure?

No you don't. They don't suffer from knock back.

[silvergray545]

Originally Posted by Kong Sheng Han

Edit: Guys, need help. Do y'all think these NT01s can last a day (6-8 24 minute sessions) AND allow me to drive 120 miles back home without cording? I'll be at TWS fwiw and assume it will be hot that day. The depth measuring holes are gone.

Why drive on them to the track? I put all four of my track wheels in my back seat and swap wheels when I get there.

[1MOREMOD]

Originally Posted by silvergray545

Why drive on them to the track? I put all four of my track wheels in my back seat and swap wheels when I get there.

Exactly. I had cage and still did that before trailer

[silvergray545]

Originally Posted by 1MOREMOD

Exactly. I had cage and still did that before trailer

I'm having a rubbing issue when I load the car fully and hit big enough bumps. I wanted stiffer rear springs before that. Now is even a better reason for them.

[1MOREMOD]

Or to buy a trailer and dodge diesel tow rig

[silvergray545]

Originally Posted by 1MOREMOD

Or to buy a trailer and dodge diesel tow rig

I think a pair of rear springs are still cheaper. Haha

But I've secretly been looking at trailers...for my full interior street car.

[Kong Sheng Han]

Originally Posted by silvergray545

Why drive on them to the track? I put all four of my track wheels in my back seat and swap wheels when I get there.

I don't have an extra set of wheels at the moment because I sold my 219Ms. So I only have the stock 18x9 wheels squared for now. Plan is to use the stock wheels for street/wet track once I get ARC-8 18x9.5 for track, which I will purchase during the fall group buy.

NT05 for street/wet
NT01 for dry track

[silvergray545]

Originally Posted by Kong Sheng Han

I don't have an extra set of wheels at the moment because I sold my 219Ms. So I only have the stock 18x9 wheels squared for now. Plan is to use the stock wheels for street/wet track once I get ARC-8 18x9.5 for track, which I will purchase during the fall group buy.

NT05 for street/wet
NT01 for dry track

Do you know if there's going to be a group buy in the fall for sure?

Also, what's your ride height? I'm having fitment issues with the stock 9" wheels at 13.25". I have to run -4 to - 4.5 degrees for them to clear the fender. I have a picture I can dig up. Looks kind of goofy. Lol

Found it:

[Kong Sheng Han]

Originally Posted by silvergray545

Do you know if there's going to be a group buy in the fall for sure?

Also, what's your ride height? I'm having fitment issues with the stock 9" wheels at 13.25". I have to run -4 to - 4.5 degrees for them to clear the fender. I have a picture I can dig up. Looks kind of goofy. Lol

Found it:

They've been doing group buys during both spring and fall consistently for a few years now, so I'm sure there'll be another this year, likely November like last year. Perfect timing to buy myself a birthday present, I guess.

I thought I was running 13.5 up front at my last event, but I'm pretty sure it was 13.25. With -3.0°, I fucked up the front right tire because lack of fender rolling (rotated left-right and did same thing to other tire...). Can't remember if suspension was settled in first two photos.







All the tire I pulled out from behind the unrolled fender area.


So I did a self-roll on the right side with blow dryer and mallet. No idea why I didn't just pay someone to do it the right way. I also raised the front to 13 5/8" and lowered rear to 13.0". Still have -3.0°. Front right tire should not touch the fender now, but we'll see on Sunday. Reduced rake a lot, but function > form. I actually like the new look.

[nholmes]

Originally Posted by M3 Number 86

That sucks! So these guys didn't think anyone who bought them would be datalogging to compare and just sold them or just thought it's aftermarket it should work better!

LOL at the 1m ps upgrade - doesn't it have a small bleeder to bottle section?

What spring rates are you running front/rear if you don't mind me asking. My family sedan is too sluggish in the transitions.....

Originally Posted by okusa

I have now done all the possible upgrades and have tons of AIM data that conclusively establish one thing...THEY ALL SUCK for track use!

I have changed out the stock oil cooler (M24), radiator (CSF) and DCT cooler (CSF). When I compare AIM data from the same tracks on very similar outside temp days (within 2 degrees) I am finding that the stock units all run 1-2 degrees cooler than these "upgraded" units. I will create a separate thread showing all the data but have just not had a chance to do so yet.

Most recently I swapped out my PS reservoir for the 1M version. After one session at Big Willow yesterday I checked and it was spraying fluid all over. So, I threw a sweatband over it...exactly what I was hoping to avoid when I made the switch.

So frustrated with all these "upgrades".

The good news is I ran a new pb yesterday of 1:29.09 in the first session after upping my rear spring rates and adding an RD Sport front sway bar

Originally Posted by roastbeef

i think the 1m reservoir is sealed, which causes the same pressure that makes a mess in our cars to leak. except, it doesn't leak out of the vent, it leaks out of the hose connections. at least this is what i've been told.
i've used an old sock and zip tie since day one and haven't had an incident besides a dirty sock.
i have also been told that a power steering cooler combats the probability of this happening. makes sense- less heat, less pressure. i'd still use a sock.

Ran the car all day yesterday in 100*F heat and had no cooling or power steering fluid issues.

No leaks from the reservoir, I'll be checking the lines for leaks in the next few days.

My car has a CSF radiator, Alkeshop oil cooler, OEM DCT cooler and a 1M power steering fluid reservoir. I was anxious to run the car and see how well it would do. Very happy with the results so far. There were other E92Ms running Buttonwillow yesterday that were having issues with cooling.

I also want to point out that I'm not running the plastic/felt undertray pieces that sit right under the front bumper.

[Redd]

Originally Posted by radiantm3

No you don't. They don't suffer from knock back.

My Brembos need a double pump. Any ideas?

[silvergray545]

Originally Posted by Kong Sheng Han

They've been doing group buys during both spring and fall consistently for a few years now, so I'm sure there'll be another this year, likely November like last year. Perfect timing to buy myself a birthday present, I guess.

I thought I was running 13.5 up front at my last event, but I'm pretty sure it was 13.25. With -3.0°, I fucked up the front right tire because lack of fender rolling (rotated left-right and did same thing to other tire...). Can't remember if suspension was settled in first two photos.

All the tire I pulled out from behind the unrolled fender area.

So I did a self-roll on the right side with blow dryer and mallet. No idea why I didn't just pay someone to do it the right way. I also raised the front to 13 5/8" and lowered rear to 13.0". Still have -3.0°. Front right tire should not touch the fender now, but we'll see on Sunday. Reduced rake a lot, but function > form. I actually like the new look.

I should probably get my fenders rolled. I'm at 13.25" front and rear. Can't go any lower in the rear. Front can come up another .25" but I still think it might need a little more camber though.

I've been looking for used wheels to hold me over until their next group buy. I think an 18x9.5 ET35 is the way to go. I want to do an 18x10 ET25 but I don't know if it will be any easier to fit than the 18x9 ET26 we have now. I'm guessing the tire may sit a bit closer to the strut but I'm not sure.

[roastbeef]

Originally Posted by Redd

My Brembos need a double pump. Any ideas?

its called knock back. from what i understand, the pistons get pushed out of position from gravitational forces. anti-knock back springs combat this problem. not sure if you can upgrade your kit to include them.

a more detailed read here;
http://www.stoptech.com/technical-su.../pad-knockback

[chamba002]

When to the tack this past weekend. Learned how to drive in the pouring rain. My Nitto NT05 gripped really well, and when the rears did slide it was predictable and controllable. There where some times I spun out but it was interesting to feel the levels of grip in the rain. This is my 2nd set of NT05, but I want to try a different tire in the same category for comparison. Maybe Hankook R-S3. I did also test out the harry lap timer and I really it like for the price! If I get more serious in racing, then I might buy something more fancy, but for beginners Harrys Lap timer is great. Next month Ill be at SCCA track night at Harris Hill!!!

[IMG]Untitled by Chamba, on Flickr[/IMG]

[IMG]Untitled by Chamba, on Flickr[/IMG]

My fastest time I manage to get before it started to rain again.
https://youtu.be/JP4IJag-rAs

[radiantm3]

Originally Posted by roastbeef

its called knock back. from what i understand, the pistons get pushed out of position from gravitational forces. anti-knock back springs combat this problem. not sure if you can upgrade your kit to include them.

a more detailed read here;
http://www.stoptech.com/technical-su.../pad-knockback

Did about 35 track days in my m3 and never had knock back ever with my brembo kit. Maybe more of an issue when running slicks? I'm never ran anything more aggressive than r comps.

[roastbeef]

Originally Posted by radiantm3

Did about 35 track days in my m3 and never had knock back ever with my brembo kit. Maybe more of an issue when running slicks? I'm never ran anything more aggressive than r comps.

I'm not sure. He's describing knock back though. I've never experienced it.

[M3 Number 86]

Originally Posted by Redd

My Brembos need a double pump. Any ideas?

That's dangerous? I've ridden in CalSE car with brembo and he's still accelerating when others are braking on their ass. Double pump would have led to an accident.

[M3 Number 86]

Originally Posted by nholmes

Ran the car all day yesterday in 100*F heat and had no cooling or power steering fluid issues.

No leaks from the reservoir, I'll be checking the lines for leaks in the next few days.

My car has a CSF radiator, Alkeshop oil cooler, OEM DCT cooler and a 1M power steering fluid reservoir. I was anxious to run the car and see how well it would do. Very happy with the results so far. There were other E92Ms running Buttonwillow yesterday that were having issues with cooling.

I also want to point out that I'm not running the plastic/felt undertray pieces that sit right under the front bumper.

Drive faster foo!

[Kong Sheng Han]

Originally Posted by silvergray545

I should probably get my fenders rolled. I'm at 13.25" front and rear. Can't go any lower in the rear. Front can come up another .25" but I still think it might need a little more camber though.

I've been looking for used wheels to hold me over until their next group buy. I think an 18x9.5 ET35 is the way to go. I want to do an 18x10 ET25 but I don't know if it will be any easier to fit than the 18x9 ET26 we have now. I'm guessing the tire may sit a bit closer to the strut but I'm not sure.

I test fitted 18x10 ET25 with 275/35 NT01s after raising ride height. Camber was way off at about 2.5°, and tire was sticking out about an inch. I don't think doing 3.0° with them will be possible, but I may try to test fit again anyways. 9.5 ET22 will require excessive camber, about 3.3-3.5, which I don't need as 3.0 yields perfect tire wear. 9.5 ET35 requires 5mm spacers up front to clear PSS10s; would prefer not to run spacers but I don't have any other options. When I switch to Bilstein Clubsports (someday), I shouldn't need to run the 5mm spacers.

[roastbeef]

At long last!

[admranger]

Originally Posted by roastbeef

At long last!

Nice!

[DiXiS 18]

Originally Posted by nholmes

Ran the car all day yesterday in 100*F heat and had no cooling or power steering fluid issues.

No leaks from the reservoir, I'll be checking the lines for leaks in the next few days.

My car has a CSF radiator, Alkeshop oil cooler, OEM DCT cooler and a 1M power steering fluid reservoir. I was anxious to run the car and see how well it would do. Very happy with the results so far. There were other E92Ms running Buttonwillow yesterday that were having issues with cooling.

I also want to point out that I'm not running the plastic/felt undertray pieces that sit right under the front bumper.

Were you in the garage with the GT350R and camaro and evo? If so, you were in the garage next to us. I think I saw you a few times out on the track session as well.