Kinkstaah

Sorry no - The sandtrap adventure ended the day, happened at the end of the last session. At that time I wasn't hearing any weird noises nor were the brakes shuddering anymore. It was only when watching the videos that I remembered I had these sounds early on!

Strangely I noticed it either disappear later in the day, or not be present. I definitely noticed when I was crawling around that open wheel thingy entering the pits (that part was audible in car). Driving home and commuting around town for example, I didn't hear it. It's plausible that it was a brake disc or something still slightly in contact. The brakes absolutely felt BAD for the first couple of sessions, huge amounts of shudder and grinding as they got up to temp - And then I actually just forgot about it as the day went on/didn't notice it. The videos were from the morning when this was more present than the afternoon/drive home when it wasn't. I've asked around and got a variety of responses including handbrake shoe contacting hub, CV joints, CB tailshaft bearing as above, and clutch input bearing. I didn't test if it disappeared when clutch was in. I haven't noticed it in any of the other videos nor did I notice it when driving to that extent. More or less hoping the microphone at the rear license plate giving some kind of clue of 'something' but it looks like "spin stuff and see if you can notice it" is the way forward here. I could be smart and use the gopro mic and re-mount it to that location to see if the sound is still present at low speed actually. Sounds like a decent test whenver I have the CBF'ness to drive the car again. Given it's almost 40C for the day of the track day and the next 3 days after, the CBF is high. All I've done since getting home is unpack the car, remove the remnants of the lip and undertray and left it there. I was surprised how well the PMU Club Racers actually worked. The brake performance on the track was absolutely fantastic, best I've ever personally used, no fade whatsoever and the bitiness was almost too good, I was scrubbing more speed off than I needed to, but I also ended up infield when I started trying to scrape off ... less speed.... so...

Ah yes, but the part in my hand was actually painted and fitted by me! I knew any front lip was likely to be sacrificial but I've had to fix it twice already... by the time I buy a fibreglass fixing kit, sort out sandpaper blocks, buy some fibreglass filler, body bog, spend the time and effort for a 'Greg' result... a new one being $290 seems like it's the better way to go and spray that with bedliner/raptor coat and we're all pretty again.. Would have preferred it last more than a month though. Them's the breaks I suppose.

WELP. I went to the track, and I suppose it went okay because any time you can drive home is okay. You may notice the car is not on the circuit in this picture. It was about 35C day out in Benalla which means the track was approximately the surface of the sun, probably. Good things, car did not overheat but it _was_ warmer than when I had done track days in similar heat before, I think, I'm not sure - I can't quite remember. Coolant got to ~105 via the ECU after 20-30 minutes of belting it in said heat. Oil got up to 145C in one instance which is pretty crazy due to oil cooler. Pressures were fine. I seem to remember this not getting quite so high before the vents. More HMMMM'ing to be done. On the subject of HMMM'ing, can anyone identify the sounds in the video below, you will know which ones I mean: https://www.youtube.com/watch?v=uj3BkI2cbTc I included some 'normal' sound as a reference for the first minute or so. The microphone in this instance was where the license plate is. It stopped working later in the day which is why my "best example of a lap video (not produced)" had internal audio - Isn't hearable from inside the car. I don't mean the chirping of the un-bedded/badly bedded track brakes which you can only hear while braking... Thoughts, brains trust?

Is this not the biggest deal of all? I was hoping the whole "will slide under cars with skirts etc and lift evenly quickly with minimal fuss" was the entire point of such a device?

Well now we all see it! I did the same. Then cut it out. Then melted half of it. Then discarded it entirely. So... you're in good company.

I feel like this is crazy pills though. Isn't it locked up all the time anyway? It shouldn't flare anywhere if it only unlocks momentarily while it shifts gears. And if it flares like that when shifting gears, then the 8HP with a 5500 stall is not driving as well when on the road and/or track use..

Yea my question was really relating to having a big stall converter and it's interaction with that. Why would BMW not just put a 5500 stall converter in there stock then? Then the OEM car could just launch control hard.

The only other time I changed it is when I noticed it had become discoloured after a few track days (it was .. yellowish). So I drained and refilled the rad. I think most people are in this situation. It's not like the car ran any cooler after I changed the coolant either. I'm gonna go with "If it makes you feel better, change it!"

I think you'll find that with modified cars, the radiator has to come out more often than once every 2 years, meaning this generally gets cycled pretty well lol. If I had a car that had been sitting for 5+ years I'd probably flush the coolant. Coolant really shouldn't go off. It's main purpose is to inhibit rust and stop the whole thing from freezing, the latter not really being an issue here.

The ability to have both a 5500 stall for launching, and a regular lockup for every other scenario is pretty sweet. Does it actually work well like that though in the real world? Would it hold up to track use and otherwise you'd never know you had a stall converter in it? If so, that's awesome

Excuse me, but 2) does apply 1) Would also apply if you consider how much is spent in the alternatives. Also there's the option of 3), buy one pre-built that you can put your family in (it's me, it's my car) That said, I went on a ~500km drive the other day. I didn't use anything more adventurous than 3rd/4th gear at about ~3000RPM and 50% throttle and I was going as fast as anyone has any sense doing on a public road, with enough grip to the point where I didn't want to go any faster. I was obviously under the limit of the current car etc etc. MX5 with 2.5 N/A to achieve the same speed would be more fun for any road scenario. Maybe consider cams. I wouldn't boost it. The use case is just not there and it won't actually make the car more enjoyable unless you really do plan on wringing gears from 1st to 3rd (at least) at 100% WOT on a public road to 150+kmh.

You need to know I am sorry for this.

When I was replacing my pump due to being stranded in the wrong state, I went with the Deatschwerks 320lph kit. It is a direct plug in to the stock wires, harness, everything. It comes with a plug... but you can plug the OEM plug directly into this thing. https://justjap.com/products/deatschwerks-dw300-fuel-pump-nissan-s13-silvia-r32-r33-r34-skyline-c34-stagea?currency=AUD Downside: Won't actually flow that much on boost if you want to push it on E85, but it's comparable to the 040/255 etc. Little more actually.

I had absolutely no symptoms whatsoever that anything was wrong.... I'm very happy it was all spotto'd and re-bled and re-torqued and aligned though. Will be picking it up tomorrow and undoubtedly be like "Oh, that clunk is gone" "Oh, the car really wants to drive straight" "Oh, that pedal feels better" "Oh, it feels like I've gained 25hp" "Oh, the handbrake works now" It should have been a sign that the new Project Mu shoes had 3mm of pad depth on them out of the box, and the OEM ones from 25 years ago that we took out also had 3mm of pad depth, implying the issue was not, and never was the shoes, but we put that down to it not being adjusted correctly. It wasn't, but it wasn't even adjustable at all given one side was boned and the T Junction of the cables was on a 45 degree angle, the non-working side being the one on the massive angle. Obviously when I had adjusted it and reset it and re-tensioned it I had either got it stuck or something along those lines. Oh well. Live and learn and absolutely could have been catastrophically worse so I'm rationalizing it as a win, kinda. I also got the chance to measure the distance between rear rim and the suspension arm/shocks and found a 30mm rubber block only just doesn't fit there. Which is great to know before ordering wheels, when I assumed 30mm was easy. The man with the Porsche adapters has rims that use 23.9mm of that space, so it's safe to assume I have between 23.9 and 29.9mm of space there to play with on the inside. The wheels looked pretty stupidly pokey with the 20mm spacers on the rear, only for me to find that the studs come out another 12mm and the wheel doesn't actually sit flush with the hub because you're supposed to cut your original studs. The wheels do have cutouts that kinda accomodate it, but not fully. So my 20mm spacer was anywhere between 25mm and 35mm. ~25mm and send it will determine on where the wheels sit with the spacers on. When I put the pads in for the track day I will mess around with spacers (with wheels that do not clear studs properly when mounted to spacers) and do more math, for the last time, for the 7th time.