Track forum general chit chat.

[roastbeef]

Originally Posted by okusa

He uses both Ticon and Vibrant Performance. I just didn’t realize it’s so expensive.

This is the lightest rear section that I know of (besides a delete). It’s 17lbs. Sounds great.
I think I’ve seen three come up for sale in the last 5-6 years.

https://www.m3post.com/forums/showthread.php?t=493977

[okusa]

Thanks. I’m going to go with the lightest possible option which is Ti straight pipe and just start wearing earplugs (and maybe passing some out around the paddock to anyone that complains ).

[slcook54]

Thunderhill East (Bypass) 1:56.86 (PB). This was on fresh 275/35/18 RE71RS. The car is still under steering and felt dancier on these tires vs. the 295/30 equivalent. I made two decent mistakes exiting T9 and also entering T14 too hot. If the stars align, I believe there is a 1:55.XX in this configuration. My last shot will be tomorrow morning before the car undergoes a sizeable transformation including Karbonius carbon doors, M24 hood, Bimmerworld trunk, Flossman Fenders, M24 door cards and more weight loss. I'm also going to dyno the car to see if Randy at Epic can squeeze out any more power.

[Bartledoo]

Originally Posted by okusa

Thanks. I’m going to go with the lightest possible option which is Ti straight pipe and just start wearing earplugs (and maybe passing some out around the paddock to anyone that complains ).

I connected my friend to a Ti fab guy for building an E92 M3 exhaust, and during the process my friend was talking about total weight figures with me. I asked what the difference was without mufflers. Then I told him to scrap the mufflers for lightweight…damn, I regret that every time I’m near him in the paddock lmao.

[DRLane]

Originally Posted by Bartledoo

I connected my friend to a Ti fab guy for building an E92 M3 exhaust, and during the process my friend was talking about total weight figures with me. I asked what the difference was without mufflers. Then I told him to scrap the mufflers for lightweight…damn, I regret that every time I’m near him in the paddock lmao.

So you and Berns are to blame for Nick’s exhaust? I recommended mufflers, as I too had the TI straight pipe variant but he opted for ear plugs. It’s too loud, my next iteration will use to ticon little 7” bullet mufflers. Should settle it down a bit (probably not).

[Bartledoo]

Originally Posted by DRLane

So you and Berns are to blame for Nick’s exhaust? I recommended mufflers, as I too had the TI straight pipe variant but he opted for ear plugs. It’s too loud, my next iteration will use to ticon little 7” bullet mufflers. Should settle it down a bit (probably not).

Berns is to blame for anyone on the forum that got a similar exhaust after Nick. Can’t blame him for the original as that was all my fault lol. Nolan facilitated the whole problem by actually building it though, of course. I just happened to know the wrong guys at the wrong time.

[Cmassey3]

Accidentally posted this in someone's track journal by mistake:

Question about moving from street tires to Hankook RS4s. I'm on stock calipers with PFC08s and about to move to 219m rear square with RS4s. How much will 200tw tires change the the oil temperatures/overall heat profile? I'll be able to do more WOT into braking zones at VIR.

On street tires and coasting half of the long straights, I've seen oil temps around 230f-250f mid session with a ballpark 2:29-2:30 consistent lap time.

[tsk94]

I'm sure some might disagree, but until you're consistently seeing 280+ oil temps, I wouldn't be overly concerned... Even then, you'll just need to change your oil a bit more regularly as it will break down a bit quicker.
I don't think you'll have a huge increase in oil temps going to the RS4s, they aren't that much stickier in comparison (but they will be much better on track).

[heath27]

Cmassey3 I was just at vir past weekend and run square rs4s/pf08. The last session of Sunday was mid 60s all laps between 14-17 and never went over the dot, so never over 260.

[Cmassey3]

Originally Posted by heath27

Cmassey3 I was just at vir past weekend and run square rs4s/pf08. The last session of Sunday was mid 60s all laps between 14-17 and never went over the dot, so never over 260.

Ah, you must've been the green E90!

[CHSe92]

Cmassey3 like others have mentioned, I think you don’t have anything to be concerned about. There are so many long straights to help cool things down. Even the cool down from Oak tree back to the paddock should be sufficient. If not, loop up toward the main gate and come back. Any cooling enhancements done to the car at all?

[Cmassey3]

Originally Posted by CHSe92

Cmassey3 like others have mentioned, I think you don’t have anything to be concerned about. There are so many long straights to help cool things down. Even the cool down from Oak tree back to the paddock should be sufficient. If not, loop up toward the main gate and come back. Any cooling enhancements done to the car at all?

Yeah, I can usually get it cooled down on the back straight. For now, just a recent coolant flush is the only change.

[slcook54]

Excited for this beauty to arrive from driftflo. Wired money on Monday, diff built by Wednesday and shipping out Friday. Can’t wait to get this on the car.

[derbo]

Already posted in the discord but throwing it up here. I'm slow but dparm has provided some good insight on things I need to work on. Thanks!

[Ximian]

Accelerating into corners is what's throwing me off, especially into 1. Extend that braking zone by decreasing pressure on the brake pedal and trail brake slightly to the apex. I think you're 10 MPH from the limit going through turn 1 at least.

Turn 2 looked you turned in too much and you could have stayed in 4th gear as well for some free traction control. It's easy to lose control of the rear at >6k RPM, nearly full throttle, and that much steering input coming out of turn 2 as seen in that lap.

You can find over a second improving just those two corners.

[derbo]

Originally Posted by Ximian

Accelerating into corners is what's throwing me off, especially into 1. Extend that braking zone by decreasing pressure on the brake pedal and trail brake slightly to the apex. I think you're 10 MPH from the limit going through turn 1 at least.

Turn 2 looked you turned in too much and you could have stayed in 4th gear as well for some free traction control. It's easy to lose control of the rear at >6k RPM, nearly full throttle, and that much steering input coming out of turn 2 as seen in that lap.

You can find over a second improving just those two corners.

There were two events that I havent really shaken off. I'm getting back to similar speeds before those two events so I'm getting back into the groove. "How Derbo got his groove back lmao"

[Ximian]

May is around the corner and that means it's time for spring cleaning. This is a short howto on deep cleaning your calipers.

Start by taking a wheel off to get better access to the caliper. Next, get several clean towels and start wiping off the brake dust and dirt.

Switch to clean towel to avoid damaging the paint with a dirty towel. Make sure to get into every crevice and use some elbow grease to clean up every bit of dirt.

[Ximian]

Originally Posted by Ximian

May is around the corner and that means it's time for spring cleaning. This is a short howto on deep cleaning your calipers.

Start by taking a wheel off to get better access to the caliper. Next, get several clean towels and start wiping off the brake dust and dirt.

Switch to clean towel to avoid damaging the paint with a dirty towel. Make sure to get into every crevice and use some elbow grease to clean up every bit of dirt.

Follow these directions and your caliper will look as good as new. It's well worth the effort and the removal of dirt and dust will certain reduce unsprung weight by a noticeable amount.

[roastbeef]

Just douse them in sonax and scrub.

[Ximian]

Originally Posted by roastbeef

Just douse them in sonax and scrub.

Or soapy water.

[kabirsaxe]

Has anyone here tried a brake cooling kit on stock rotor/calipers? I’m leaning towards the pinnacle motorsports kit. Overheated the brakes on a 55 degree day with fresh fluid, semi-track pads.

[leftfootbr8king]

Which fresh fluid? It would be alot easier to run a proper track pad that wants and likes heat, along with the highest temp fluid you can get, then to f around with ducting.

Ducting is for when you’re already on a dedicated track pad, with endless fluid in the lines and it’s 95 degrees out, and you need to control brake temps while keeping the pace high to maintain pad life for a given duration longer than a DE session.