Track forum general chit chat.

[turbo_joe]

Originally Posted by Ximian

NT01s

[dogbone]

Originally Posted by evilspiritM3

See description for weight and HP. You can look up the results in race hero from the last CCA race at VIR.

Ah very nice. Thanks. I'm glad to see this video. Nice driving. He makes it look quite effortless. He looks very comfortable out there.

It makes sense that he's on Michelin slicks. Without aero, his cornering speeds are very good and the car is very connected to the ground. We can see from the in-cabin footage that he's not fighting the car. And having a car in front of the camera car sheds some light on his braking. He easily out-brakes and out-corners the aero car in front of him every single time. So, the tires have to be very good.

Do we know what that car is in the front? Is it an E92? I can't quite make out what it is. I tried identifying the car number and looking at Race Hero, but I couldn't find a car number that matched.

Anyway, I find it interesting that, in this video, the non-aero car is out-braking and out-cornering the aero car, but on the straights, the aero car is pulling away......that's the opposite of what I would have predicted.

[b4hand]

Looks like an M2 CSR with a different wing. I think Mike Skeen was driving that one.

I am a Mike Skeen fanboy

[rhyary]

Originally Posted by b4hand

Looks like an M2 CSR with a different wing. I think Mike Skeen was driving that one.

I am a Mike Skeen fanboy

Me too!

[//steve\\]

Originally Posted by turbo_joe

That dude is wheeling the shit out of that car, very impressive. That T10 corner speed with no aero is crazy. Any idea what tires he is running?

Tires....definitely the same ones front and rear

[Bimmer Barney]

Timing covers not cracked. 90k miles and first valve cover/timing cover job. Tired of burning oil smell. Doing ICV while I'm in here because I've had some bouncing idle. I'm out of warranty on all this.

[evilspiritM3]

Originally Posted by dogbone

Ah very nice. Thanks. I'm glad to see this video. Nice driving. He makes it look quite effortless. He looks very comfortable out there.

It makes sense that he's on Michelin slicks. Without aero, his cornering speeds are very good and the car is very connected to the ground. We can see from the in-cabin footage that he's not fighting the car. And having a car in front of the camera car sheds some light on his braking. He easily out-brakes and out-corners the aero car in front of him every single time. So, the tires have to be very good.

Do we know what that car is in the front? Is it an E92? I can't quite make out what it is. I tried identifying the car number and looking at Race Hero, but I couldn't find a car number that matched.

Anyway, I find it interesting that, in this video, the non-aero car is out-braking and out-cornering the aero car, but on the straights, the aero car is pulling away......that's the opposite of what I would have predicted.

It would make sense that it's either the M4 GT4 or an M2 CSR. The fully tuned S55 is going to pull on a S65 all day.

[b4hand]

Originally Posted by evilspiritM3

It would make sense that it's either the M4 GT4 or an M2 CSR. The fully tuned S55 is going to pull on a S65 all day.

Well they're in the same class, so it shouldn't be an insane advantage. If you watch his other videos he has one where he battles with an M2 CSR and eventually passes it.

He's also doing 155mph on the straight.

[omgzirra_exe]

fully street spec E92 M3 w/ OSG and 4.1FD giving race prepped cars a run for their money.. love the Assist M3!

[evilspiritM3]

Originally Posted by b4hand

Well they're in the same class, so it shouldn't be an insane advantage. If you watch his other videos he has one where he battles with an M2 CSR and eventually passes it.

He's also doing 155mph on the straight.

BM and CCA classing isn't as straight forward as NASA (my opinion). I think they are all on the full power usb stick. The torque they are pushing in an S55 compared to an S65 is a lot. Over a 100ft/lbs.

[Bimmer Barney]

All done with the maintenance work. And now just a gratuitous engine bay shot 😎

[Evice]

Originally Posted by evilspiritM3

It would make sense that it's either the M4 GT4 or an M2 CSR. The fully tuned S55 is going to pull on a S65 all day.

Hey There folks -- I am the driver of that e92 Ask me any questions you have.

The M2 CSR that I was racing was with 450 pkg and had some carbon treatment (lower than stock M2 CS racing weight) - It was a freight train. M4 GT4 is in a different zip code.

My S65 is all-around stock and has been racing for 4 years, so I am sure a little tired. It was around 365whp last year without restrictoer.

It was an SCCA Touring 2 car and turned 2:01s at 3550# Min weight with 80mm restrictor (359whp), on 295 Hoosiers. 2:00 was with 3330# 27/65 Old Michelins, no restrictor. Still stock and more tired. I need solid/Heim joint suspension upgrades to address some geometry issues.

So yea, AMA.

[Evice]

This is “dyno run” against a stock M2 CSR. Previously mentioned M2 CSR was much faster.

[Evice]

This was my lap on R7s. Much better execution but rang the RPMs way too high and lost sometime so 2:02s. Had I executed this clean on this year’s weight and tires, easily would have been in 1:59s. Next year…

[dogbone]

Originally Posted by Evice

Hey There folks -- I am the driver of that e92 Ask me any questions you have.

The M2 CSR that I was racing was with 450 pkg and had some carbon treatment (lower than stock M2 CS racing weight) - It was a freight train. M4 GT4 is in a different zip code.

My S65 is all-around stock and has been racing for 4 years, so I am sure a little tired. It was around 365whp last year without restrictoer.

It was an SCCA Touring 2 car and turned 2:01s at 3550# Min weight with 80mm restrictor (359whp), on 295 Hoosiers. 2:00 was with 3330# 27/65 Old Michelins, no restrictor. Still stock and more tired. I need solid/Heim joint suspension upgrades to address some geometry issues.

So yea, AMA.

Enjoyed seeing your driving man! You are out-braking and out-cornering everything you encounter on that track! Nice! haha

Someone mentioned you have aero on order? Front and rear? What did you order? Curious to see what it does for you on mostly stock power.

You've been listing weights. Is that with driver and fuel?

If you have a minute, give us a rundown on the major mods of the car.

Any chance you'll be at HyperFest in a couple weeks?

haha I could keep asking questions, but let's start with this!

[Evice]

Originally Posted by dogbone

Enjoyed seeing your driving man! You are out-braking and out-cornering everything you encounter on that track! Nice! haha

Someone mentioned you have aero on order? Front and rear? What did you order? Curious to see what it does for you on mostly stock power.

You've been listing weights. Is that with driver and fuel?

If you have a minute, give us a rundown on the major mods of the car.

Any chance you'll be at HyperFest in a couple weeks?

haha I could keep asking questions, but let's start with this!

I have 9Lives Swan Neck arrived two days late so I couldn’t put it on for VIR this year.

I had BimmerWorld front Splitter on but it is certainly not for the faint of heart for someone to drive with splitter and no rear aero. It was certainly harder than without splitter. I was not able to go thru first part of esses WOT in comparison to last year’s lap.

Weight 3330# with 3gallon gas, and with me in it. All stock body panels. I have BimmerWorld carbon doors on order. 5-6 month lead time…

All suspension arms are stock besides the rear toe arm (SPL i think). Bushings are custom run Delrins. All bushings need to be upgraded to solids.

Dampers are 3way remote reservoir MCS. Rear is coilover.
Springs were 800# Front and 700# Rear. It was limited rates due to SCCA Touring ruleset, but will go much higher, around 1100-1200# Front and compatible rear.

Diff ratio is 3.85, again was limited due to Touring, it is a Diffsonline race carrier. 10 Disc 50/70 Low preload. Car will be faster with 4.10 and I will upgrade that.

This year is a development year for this car. Touring rules are behind me so I can spend some engineering time on the car to fix geometry issues.

[turbo_joe]

Painted my cage yesterday. That was way too much work and have no interest in doing that again any time soon.

Now to start getting the lexan windows installed, get the dash and seat back in, and fix a few things before Hyperfest at VIR in two weeks.

[dogbone]

Originally Posted by Evice

I have 9Lives Swan Neck arrived two days late so I couldn’t put it on for VIR this year.

I had BimmerWorld front Splitter on but it is certainly not for the faint of heart for someone to drive with splitter and no rear aero. It was certainly harder than without splitter. I was not able to go thru first part of esses WOT in comparison to last year’s lap.

Weight 3330# with 3gallon gas, and with me in it. All stock body panels. I have BimmerWorld carbon doors on order. 5-6 month lead time…

All suspension arms are stock besides the rear toe arm (SPL i think). Bushings are custom run Delrins. All bushings need to be upgraded to solids.

Dampers are 3way remote reservoir MCS. Rear is coilover.
Springs were 800# Front and 700# Rear. It was limited rates due to SCCA Touring ruleset, but will go much higher, around 1100-1200# Front and compatible rear.

Diff ratio is 3.85, again was limited due to Touring, it is a Diffsonline race carrier. 10 Disc 50/70 Low preload. Car will be faster with 4.10 and I will upgrade that.

This year is a development year for this car. Touring rules are behind me so I can spend some engineering time on the car to fix geometry issues.

Sounds you like you have a bunch of significant changes coming to the car. If you have a bit of spare time, it would be cool to see your progress with a build thread. There's a nice group here that is interested in that sort of thing.

What's pushing you to increase the front spring rate so much? (I have same suspension with 850front/570rear.)

What do you plan on addressing regarding geometry? If you're looking into geometry, have you seen the Strom Motorsport front uprights? They're not cheap, but they claim to fix several things in the front. (I don't have them.)

Regarding bushings----there's been some conversation about whether going full solid on all bushings is really the best solution. Some who have gone full solid feel like they struggle to put power down---the thought being that perhaps a mix of solid and not-solid may be the answer. I have solid subframe bushings in the rear, but stock bushings in rear control arms and I feel like I can put (supercharged) power down just fine. Anyway, I'd be curious to hear the results of whatever you do.

[Evice]

Originally Posted by dogbone

Sounds you like you have a bunch of significant changes coming to the car. If you have a bit of spare time, it would be cool to see your progress with a build thread. There's a nice group here that is interested in that sort of thing.

What's pushing you to increase the front spring rate so much? (I have same suspension with 850front/570rear.)

What do you plan on addressing regarding geometry? If you're looking into geometry, have you seen the Strom Motorsport front uprights? They're not cheap, but they claim to fix several things in the front. (I don't have them.)

Regarding bushings----there's been some conversation about whether going full solid on all bushings is really the best solution. Some who have gone full solid feel like they struggle to put power down---the thought being that perhaps a mix of solid and not-solid may be the answer. I have solid subframe bushings in the rear, but stock bushings in rear control arms and I feel like I can put (supercharged) power down just fine. Anyway, I'd be curious to hear the results of whatever you do.

I do not work on my cars anymore. My car stays with a race team and I fly into races so might be hard to get a build thread. If I get pix from mechanics, I can share them. I think Bosch Motorsports ABS, Standalone ECU, and a couple of other items can be shared once they are in.

I'll put the car thru K&C testing (Kinematics and Compliance) to get the plans finalized in rates and whatnot, but that's just around the GT4 rates with similar motion ratios. If the engineering report comes differently, I am not stuck on those rates.

I'm aware of the Strom's knuckles. I think they are a decent starting point but it is still not an absolute solution in my opinion. It is a mix of track day-street car-racecar mix while addressing some of the issues in the front. I am looking for a bit more custom solution to truly get a handle on this. That's why the expensive K&C stuff. This may even change the pickup points.

Solids are mostly bringing in the consistency needed, in the middle of the corner. When the suspension is loaded, e.g., a shift in the rear toe is remarkably felt.

We'll see how this process goes. That said, my mechanics are telling me to go get an M4GT4 rather than developing this car, and that's a perfectly valid opinion. The engine quote alone for a stroker 4.7L S65 was quite up there...

[dogbone]

Originally Posted by Evice

I do not work on my cars anymore. My car stays with a race team and I fly into races so might be hard to get a build thread. If I get pix from mechanics, I can share them. I think Bosch Motorsports ABS, Standalone ECU, and a couple of other items can be shared once they are in.

I'll put the car thru K&C testing (Kinematics and Compliance) to get the plans finalized in rates and whatnot, but that's just around the GT4 rates with similar motion ratios. If the engineering report comes differently, I am not stuck on those rates.

I'm aware of the Strom's knuckles. I think they are a decent starting point but it is still not an absolute solution in my opinion. It is a mix of track day-street car-racecar mix while addressing some of the issues in the front. I am looking for a bit more custom solution to truly get a handle on this. That's why the expensive K&C stuff. This may even change the pickup points.

Solids are mostly bringing in the consistency needed, in the middle of the corner. When the suspension is loaded, e.g., a shift in the rear toe is remarkably felt.

We'll see how this process goes. That said, my mechanics are telling me to go get an M4GT4 rather than developing this car, and that's a perfectly valid opinion. The engine quote alone for a stroker 4.7L S65 was quite up there...

In this sub-forum, an E92 M3 with a standalone ECU, Bosch ABS, 4.7L stroker, full K&C car plus all the other race bits would be a unique beast. Would be fun to hear more about it. Please check back in when you implement some of this stuff!

Does the race team that transports your car go all around the country? Or do they mostly focus on East Coast? My car spent most of its life in CA so I've seen all the tracks out there, but now I live in CO which is a good launching point to anywhere in the country. Basically, I can get anywhere in 2 days. In the last 12 months, I've been able to get a taste for 3 East Coast tracks (WGI, VIR, RA). Really enjoying seeing new tracks. I want to keep that trend going and keep seeing new pavement.

[omgzirra_exe]

Originally Posted by Evice

I do not work on my cars anymore. My car stays with a race team and I fly into races so might be hard to get a build thread. If I get pix from mechanics, I can share them. I think Bosch Motorsports ABS, Standalone ECU, and a couple of other items can be shared once they are in.

I'll put the car thru K&C testing (Kinematics and Compliance) to get the plans finalized in rates and whatnot, but that's just around the GT4 rates with similar motion ratios. If the engineering report comes differently, I am not stuck on those rates.

I'm aware of the Strom's knuckles. I think they are a decent starting point but it is still not an absolute solution in my opinion. It is a mix of track day-street car-racecar mix while addressing some of the issues in the front. I am looking for a bit more custom solution to truly get a handle on this. That's why the expensive K&C stuff. This may even change the pickup points.

Solids are mostly bringing in the consistency needed, in the middle of the corner. When the suspension is loaded, e.g., a shift in the rear toe is remarkably felt.

We'll see how this process goes. That said, my mechanics are telling me to go get an M4GT4 rather than developing this car, and that's a perfectly valid opinion. The engine quote alone for a stroker 4.7L S65 was quite up there...

which standalone are you going to be utilizing? we deal with syvecs at my place and was considering throwing one in my e92m as well.

[torrque]

Not a dedicated track/race car, but my wife's daily now... still fun on track