Track forum general chit chat.

[macdude357]

Originally Posted by furry

I just ordered the PFC 06 from bimmerworld on sale for ~$150. Seems like a great deal.

You would do well to spend a lot of time reading through the threads in this forum. Pretty much everything related to tracking your car is covered.

[Ximian]

Originally Posted by Mantii

I'm "stress testing" Rowe Racing 10w60 for eEuroparts.com. ...
I reached out to them a few months back and let them Know I'd like to test the oil in the e46 m3 and they agreed. Will keep you guys updated.

Ask them if they would be interested in providing oil for a group to stress test. Make it an event for Road America (80% sure I'm going at the moment) with a fleet of us on their race oil. I wouldn't mind a few Rowe and other decals for a free oil change.

[roastbeef]

Originally Posted by Ximian

It was indicating at 280F a few moments before it went into limp mode. Might be related to pre-ignition as it was an older S65.

I'd speculate it can be cumulative... older cooling system, older plugs (maybe?), plus the heat if the track.

[admranger]

Originally Posted by zstreet86

My auto-x duty re-71r-'s do that on the fronts. It doesn't bother me nor does it seem to affect performance of the tire. I believe it is caused from pushing/ understeer. I flip mine side to side (not square) halfway through their life and it gets balanced out. I'll try to attach pics...

Understeer makes sense, though too much slip angle is also possible (without feeling understeer). If dparm has tire temp data we can see if there's too much slip angle being put into the tires (best to do this test on a skid pad).

I should have guessed dparm had a weapons grade tire pressure gauge.

[M3 Number 86]

Race Inspired Cosmetic Enhancement

[roastbeef]

Oh you fancy

[dparm]

Originally Posted by admranger

Understeer makes sense, though too much slip angle is also possible (without feeling understeer). If dparm has tire temp data we can see if there's too much slip angle being put into the tires (best to do this test on a skid pad).

I should have guessed dparm had a weapons grade tire pressure gauge.

I do have tire temp data via the PDR but I've always questioned how accurate it is and how it is even derived, and where it's being measured.

Regardless, here it is on the last lap of the last session of the day. Note that the sampling rate is only 1Hz.

[admranger]

Originally Posted by dparm

I do have tire temp data via the PDR but I've always questioned how accurate it is and how it is even derived, and where it's being measured.

Regardless, here it is on the last lap of the last session of the day. Note that the sampling rate is only 1Hz.

I think your graphic is showing tire temps at each corner of the car. I'm looking more for temps across the tire (outside, middle, inside).

Do you have steering wheel angle data as well? Next time out, drive a few laps like you normally do and then try to consciously use just a smidge (technical term) less steering into a corner that you're comfortable with. Sometimes less is more, especially where steering wheel input is concerned. It'd be interesting to see what the data say when you do this.

[CorruptCommie]

Going back to the oil analysis question:
Total Racing Quartz vs Liqui Moly

I ran both of these about 6 track days, the Liqui Moly had more miles because the car was driven to the track vs trailered.
Compare the yellow highlighted section - Total Racing on the left (most recent), Liqui Moly on the right. I'll be sending out a report for Ravenol shortly and will post back the results when I get it.

*Rod bearings were done at 117k miles, new ones have 13k miles and a crap ton of track days.

[Mantii]

Originally Posted by CorruptCommie

Going back to the oil analysis question:
Total Racing Quartz vs Liqui Moly

I ran both of these about 6 track days, the Liqui Moly had more miles because the car was driven to the track vs trailered.
Compare the yellow highlighted section - Total Racing on the left (most recent), Liqui Moly on the right. I'll be sending out a report for Ravenol shortly and will post back the results when I get it.

*Rod bearings were done at 117k miles, new ones have 13k miles and a crap ton of track days.

That's a bit concerning but hopefully a better report with the Ravenol. Not sure why the lead keeps increasing after only 13k miles on the new bearings. You'd think it would be somewhat steady and show lower numbers at this point. Weird

[dparm]

Originally Posted by CorruptCommie

Going back to the oil analysis question:
Total Racing Quartz vs Liqui Moly

I ran both of these about 6 track days, the Liqui Moly had more miles because the car was driven to the track vs trailered.
Compare the yellow highlighted section - Total Racing on the left (most recent), Liqui Moly on the right. I'll be sending out a report for Ravenol shortly and will post back the results when I get it.

*Rod bearings were done at 117k miles, new ones have 13k miles and a crap ton of track days.

How many track minutes/hours on each of those changes? Need to know that to do an apples-to-apples comparison.

[CorruptCommie]

Originally Posted by dparm

How many track minutes/hours on each of those changes? Need to know that to do an apples-to-apples comparison.

Yeah I don't keep track of that. They told me to run 6 track days based on what I reported. I would estimate that's about 24 20min sessions for both the highlighted samples.

Not really as concerned as they are about the lead wear. It'll be getting new rod bearings in the next year or if the copper goes up.

[Ximian]

Originally Posted by CorruptCommie

Yeah I don't keep track of that. They told me to run 6 track days based on what I reported. I would estimate that's about 24 20min sessions for both the highlighted samples.

Not really as concerned as they are about the lead wear. It'll be getting new rod bearings in the next year or if the copper goes up.

The lead increase could be related to the fuel content increase in the oil, but probably not. Are you sure your car isn't huffing race fuel during lunch breaks at the track?

[CorruptCommie]

Originally Posted by Ximian

The lead increase could be related to the fuel content increase in the oil, but probably not. Are you sure your car isn't huffing race fuel during lunch breaks at the track?

I questioned that too, but it gets street gas and I double checked that the Sunoco pump @ Mid-Ohio is unleaded 93.

[AriuSen]

a quick teaser of a documentary about bimmer challenge, M3 Number 86 xchosun1x and Semp at laguna seca.

[dparm]

Originally Posted by CorruptCommie

Yeah I don't keep track of that. They told me to run 6 track days based on what I reported. I would estimate that's about 24 20min sessions for both the highlighted samples.

Not really as concerned as they are about the lead wear. It'll be getting new rod bearings in the next year or if the copper goes up.

The increasing lead is definitely concerning, I agree with them.

Everything else in those reports look okay. Viscosity okay, minimal dilution, additive pack not depleted. Flashpoint is a tad low but that's to be expected.

If I read that correctly, you are adding about 1 quart of make-up oil per change interval? Are you just topping off with 1/4 quart before each track day?

[CorruptCommie]

I check the oil level in the morning after I let it warm up and top off. The engine burns a bit, and there's always stuff in the catch can.

Total vs Liqui Moly is the same price, so I guess depending on how the Ravenol test comes back, I'll stick with either Liqui Moly or Ravenol. All three of these can be found for about ~$8ish per quart. Everything else seems to be more expensive.

[dparm]

Originally Posted by CorruptCommie

I check the oil level in the morning after I let it warm up and top off. The engine burns a bit, and there's always stuff in the catch can.

Total vs Liqui Moly is the same price, so I guess depending on how the Ravenol test comes back, I'll stick with either Liqui Moly or Ravenol. All three of these can be found for about ~$8ish per quart. Everything else seems to be more expensive.

If we ignore the rising lead, I would say those oils are performing roughly the same. Run whichever is cheaper or easier to get at the time of the change. LM is at most NAPA stores.

[roastbeef]

Originally Posted by CorruptCommie

I check the oil level in the morning after I let it warm up and top off. The engine burns a bit, and there's always stuff in the catch can.

Total vs Liqui Moly is the same price, so I guess depending on how the Ravenol test comes back, I'll stick with either Liqui Moly or Ravenol. All three of these can be found for about ~$8ish per quart. Everything else seems to be more expensive.

Do you use any additives?

If not, I have an experiment for you since you seem really on top of your oil consumption. Is a bottle of liqui moly ceratec. I'm pretty sure it reduced my car's oil consumption.

[CarPoor]

Originally Posted by CorruptCommie

I check the oil level in the morning after I let it warm up and top off. The engine burns a bit, and there's always stuff in the catch can.

Total vs Liqui Moly is the same price, so I guess depending on how the Ravenol test comes back, I'll stick with either Liqui Moly or Ravenol. All three of these can be found for about ~$8ish per quart. Everything else seems to be more expensive.

My apology if you’ve already covered this, but did you happen to use any race gas that might have been leaded?

[admranger]

Originally Posted by CorruptCommie

I check the oil level in the morning after I let it warm up and top off. The engine burns a bit, and there's always stuff in the catch can.

Total vs Liqui Moly is the same price, so I guess depending on how the Ravenol test comes back, I'll stick with either Liqui Moly or Ravenol. All three of these can be found for about ~$8ish per quart. Everything else seems to be more expensive.

BE Bearings makes bearings for the S54. Might be a good option when you change yours.

Hope it's just an anomaly. Thanks for doing the comparison test.

[Ximian]

Originally Posted by CorruptCommie

I questioned that too, but it gets street gas and I double checked that the Sunoco pump @ Mid-Ohio is unleaded 93.

If lead is down with your next oil analysis, no matter what the oil, I would assume that maybe the fuel was slightly contaminated with lead. It's not unheard of that fuel types get mixed up at a gas station.