heinzboehmer's 2002 Topaz 6MT Coupe

[Bry5on]

Happy to host them on S3. PM me if that would be helpful.

Thanks ethan for hosting! Files can be downloaded here: http://bry5on-nam3forum.sfo2.digital...step_files.zip

[heinzboehmer]

Also I believe heinzboehmer redesigned the upper duct to better match the dust shield if memory serves. Heinz, shoot me that file if you want.

Sorta. I redesigned the upper duct to match my modified brake shields. I had previously cut them to install circular flanges for traditional brake duct hoses.




Happy to share the files, but they're matched to the cut shields on my car, so not sure they'll be useful to anyone else.

[ethan]

Follow instructions here for flap trimming: https://nam3forum.com/forums/forum/m...963#post253963

Trying to upload step files but they’re too big for the forum. Will have to find a spot to host them. Also I believe heinzboehmer redesigned the upper duct to better match the dust shield if memory serves. Heinz, shoot me that file if you want.

Happy to host them on S3. PM me if that would be helpful.

[Bry5on]

That's a pretty great result.

Want to share the scoop files?

Follow instructions here for flap trimming: https://nam3forum.com/forums/forum/m...963#post253963

Trying to upload step files but they’re too big for the forum. Will have to find a spot to host them. Also I believe heinzboehmer redesigned the upper duct to better match the dust shield if memory serves. Heinz, shoot me that file if you want.

[Obioban]

Alright, time for a bit of science. Did some testing to qualify whether the brake scoops help the dust boot problem at the latest track day.

This whole experiment is based on the assumption that my driving is consistent enough to draw somewhat reliable conclusions from. Thunderhill 3mi is definitely the track that I know the best, so I don't see much of an issue with consistency. Also, the two track days I'm comparing did happen at different times of the year, but the day with scoops was MUCH hotter, so the scoops needed to be extra efficient to make a difference. Here's a quick overview of the experiment design:

No scoops track day:
- Mar 2024
- Thunderhill 3mi bypass configuration
- 3.5 hrs of track time
- Ambient temp: ~15 C
- Cloudy skies
- ~2:05 min/lap
- More pad life

Scoops track day:
- Sep 2024
- Thunderhill 3mi bypass configuration
- 3.5 hrs of track time
- Ambient temp: ~35 C
- Sunny skies
- ~2:05 min/lap
- Less pad life

Car setup (same both days):
- ~3200 lbs
- ~315 whp
- MK60
- RBF600 (purposefully did not flush fluid so that the only potential difference would be worse thermal capacity on the scoops day)
- Bridgestone Potenza RE-71RS
- Cerakoted 996 calipers (finish supposedly helps dissipate heat)
- Girodisc titanium pad shims
- Brand new girodisc dust boots installed before each day
- Same PFC08 pads front + rear (as in the same exact parts, not just the same compound)

The experimental results are meant to be qualitative and not quantitative. Basically just trying to see if having the scoops makes the dust boots survive.

I found one cooked dust boot on each side of the car after the no scoops track day. Scoops track day involved thinner pads and higher ambient temps, so zero cooked boots would point to working scoops and not increased thermal capacity in the system (in reality thermal capacity decreased).

Aaand the results:






Success! Dust boots seem totally fine We'll have to see how many more track days they last.

Also, a few entertaining things I found when dressing the car back up for street duty.

These used to be rotated 90 deg:



These pins and screws used to be centered on the rotor holes:



And these tires used to work:



Man, this last track day really made me remember how hard this sort of driving can be on the hardware. Tons of fun, but it really does age parts very fast.

(and yes I'm aware I need more camber, more on that soon)

That's a pretty great result.

Want to share the scoop files?