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Well FML first track day disaster.

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pudding:

--- Quote from: Marticus on August 31, 2024, 09:11:10 pm ---
--- Quote from: pudding on August 31, 2024, 04:47:33 pm ---Hopefully just a momentary loss of oil pressure from the oil sloshing about during hard cornering.

That is why BMW M cars have baffled sumps and scavenge pumps.  MK7s are even worse than MK5s for oil surge. You often see Golf Rs belching out clouds of blue smoke on track from overwhelmed PCVs.  Anyway, hopefully nothing serious.  Look for brass coloured shavings in the next oil change and then you'll know for sure.

--- End quote ---

Yeah the warning came up after a flat throttle left hander. Not so much a turn but enough g forces to push everything to the outside, and with flat foot at 5k rpm..well let's say I'm not hopeful.

The rattling noise and smoke coming out of the valve cover around piston 4 leaves me thinking there is a 0% chance that there isn't damage done somewhere.

With that said, the engine was running quiet when I was taking on and off the truck, so I'll do and oil change and drop the pan, and search for glitter.

But I'm leaning towards trying to keep this motor limping along for now if possible without too much investment, and building up a CDL motor for track work, which I'm guessinging would mainly involve things like a baffled sump. balance shaft delete, maybe oil cooler etc.

--- End quote ---

Aaaaah bugger, the noises don't sound too promising.

I would definitely look into some baffled sump options and maybe an external oil cooler as well and you should be good!  You might benefit from a catch tank as well.  I wouldn't use one on a road car, but they definitely have their place on track cars.

OllieVRS:
Check the oil for glitter, if it's fairly minimal the damage may not be too bad.

It's very important to measure the oil pressure to see if what happened was just 'oil sloshing about'. Get an oil pressure test kit, let the car get fully warmed up and measure the oil pressure at idle, 1000 RPM, 2000 RPM and 3000 RPM.

If at any moment during the test the oil pressure drops below 1 bar (14.5psi) you've got a serious oil system problem to solve, so that's when it's time to turn the engine off and investigate.

I can help you figure out what the issue is if you can report back the previously mentioned oil pressure numbers.

Marticus:

--- Quote from: OllieVRS on September 02, 2024, 10:31:56 am ---Check the oil for glitter, if it's fairly minimal the damage may not be too bad.

It's very important to measure the oil pressure to see if what happened was just 'oil sloshing about'. Get an oil pressure test kit, let the car get fully warmed up and measure the oil pressure at idle, 1000 RPM, 2000 RPM and 3000 RPM.

If at any moment during the test the oil pressure drops below 1 bar (14.5psi) you've got a serious oil system problem to solve, so that's when it's time to turn the engine off and investigate.

I can help you figure out what the issue is if you can report back the previously mentioned oil pressure numbers.

--- End quote ---

Thanks for the suggestion and offer, I'll check into it for sure, but want to assess potential damage first as that will decide what I do next and if I keep the engine.

I had planned for oil temp and pressure gauges at some point, so that will be a higher priority now I guess.

Marticus:
Well after a few evenings spread over the last couple if weeks I finally managed to get the stripped bolts out and the oil pan off.

What greeted me was not pleasant.




So, based on that I'm fairly certain at this point I'm going to need a rebuild or swap. Or both because the weather is changing here, the Mrs has been patient but that's coming to an end, and we will need the car back up and running.

So in an attempt to make lemonade out of this situation I've narrowed my choices down to:

A: buy the cheapest possible replacement motor, drop it in and hope it works while I rebuild this one for higher power and better longevity on track.

B: spend more money on a CDL motor and drop it in, sell this motor if possible, and hope that the new motor is in good condition, and try to build it up over time.

Advantage of CDL motor is obvious, disadvantage is gambling on an unknown motor long term..

mjmallia:
I would say option A to get the car going again.

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