[AHall]

Originally Posted by SatinblkF90

He said he may have bottomed out at some point possibly causing the oil pan to crack. Sounds like some big bump must of occurred while driving at some point at least, maybe that’s it, hard to say…

I see, so he has a cracked oil pan which must have been caused by a heck of a impact. He must have noticed the oil leak on the ground as a assume this happened some time prior to the engine failure. Given this information it is not a surprise the engine failed if running on no/low oil.

[tractionoff]

Originally Posted by Duta569

Who totaled it out? The insurance company?or bmw?. I thought for an insurance company to Total a car out the repair had to be more than the value of the vehicle?

I had a vehicle before that was valued at $27,000 and the insurance paid $16,000 for the repair after an accident.

I assume it was BMW, they must have felt that an engine replacement under warranty wasn't worth it for them?

I believe it was BMW as well. For everyone saying it makes no sense, I'm just as clueless and lost as you all are. The car was also not paid off, and it was a lease. Not sure if that makes a difference but I'm pretty sure they wouldn't just give you a brand new car for whoever was saying that.. they were saying it wasn't worth them fixing the car. I think a lot of people also seem to forget the way the market was at the time (and still is).

[AHall]

Originally Posted by tractionoff

I believe it was BMW as well. For everyone saying it makes no sense, I'm just as clueless and lost as you all are. The car was also not paid off, and it was a lease. Not sure if that makes a difference but I'm pretty sure they wouldn't just give you a brand new car for whoever was saying that.. they were saying it wasn't worth them fixing the car. I think a lot of people also seem to forget the way the market was at the time (and still is).

I should have typed replace busted car versus give you a new car. Obviously BMW is not going to give away a car. It is not uncommon for BMW to replace a failed car, but if the failure was due to low oil which was due to a damaged/cracked oil pan I am surprised they would have offered you anything.

[SatinblkF90]

Originally Posted by AHall

I see, so he has a cracked oil pan which must have been caused by a heck of a impact. He must have noticed the oil leak on the ground as a assume this happened some time prior to the engine failure. Given this information it is not a surprise the engine failed if running on no/low oil.

I believe this must be what happened. It actually all makes sense now, unless he did not see any major oil leak before engine failure, then it’s still a mystery.

[bimmerbeast9]

Originally Posted by SatinblkF90

Especially bootmod3 OTS tunes which are really conservative. A lot of people are fine for long time even on custom tunes which are far more aggressive tunes than bm3 OTS files.

Plus anyways, wasn’t this car bone stock that blew up?! This just makes it even more odd.

do research. bm3 is rubbish.

only $500 for a tune.. $500 to tune a $60k motor..
there are many factors too much to dissect

but the price is all i need to higlight

[Kponti]

Originally Posted by bimmerbeast9

do research. bm3 is rubbish.

only $500 for a tune.. $500 to tune a $60k motor..
there are many factors too much to dissect

but the price is all i need to higlight

Add a 2 in front of it and get the same tune.....does that make it safer?

[SatinblkF90]

Originally Posted by bimmerbeast9

do research. bm3 is rubbish.

only $500 for a tune.. $500 to tune a $60k motor..
there are many factors too much to dissect

but the price is all i need to higlight

Rubbish for performance but not for safety. They are very light/conservative tunes so for someone who wants something at least faster than stock and conservative/safe it’s not a bad option. For $2500 you can also end up with an overly aggressive tune if not done right can kill the motor too.

[pbonsalb]

Originally Posted by bimmerbeast9

do research. bm3 is rubbish.

only $500 for a tune.. $500 to tune a $60k motor..
there are many factors too much to dissect

but the price is all i need to higlight

A motor is not $60k. And the tune works well.

[aj_g80]

Originally Posted by pbonsalb

A motor is not $60k. And the tune works well.

A member here just had his motor replaced and the cost was 60k... main section of forum.

[pbonsalb]

A used motor like the one in the used M5 with the broken motor is $20k at most and $5k at most to put it in. I could install a built motor in my car for under $25k. Hopefully the $60k was paid by a warranty or insurance. If not someone got bent over.

[AHall]

Originally Posted by pbonsalb

A used motor like the one in the used M5 with the broken motor is $20k at most and $5k at most to put it in. I could install a built motor in my car for under $25k. Hopefully the $60k was paid by a warranty or insurance. If not someone got bent over.

That was for a warranty repair due to an engine that failed in a car with around 700 miles. So the repair involved a new BMW engine and parts as well as installation by a BWM dealership at BMW labor rates. I checked a BMW parts website, and a short block is $28k. I assume they replaced the long block, so around $60k is probably in the ballpark.

[pbonsalb]

Right, no one paid $60k for a motor because they used a BM3 tune. And everyone knows BMW dealer prices are ridiculous for parts and labor.

[damianwo]

Originally Posted by AHall

That was for a warranty repair due to an engine that failed in a car with around 700 miles. So the repair involved a new BMW engine and parts as well as installation by a BWM dealership at BMW labor rates. I checked a BMW parts website, and a short block is $28k. I assume they replaced the long block, so around $60k is probably in the ballpark.

That gentleman did not even make it to his break in service

$60k was dealers cost. Engines today on car-part cost between $10,000-$27,000. $5,000 installation is a bit much, I would say under $2,000 is a good price.

[tractionoff]

Originally Posted by SatinblkF90

I believe this must be what happened. It actually all makes sense now, unless he did not see any major oil leak before engine failure, then it’s still a mystery.

As I said before, that was just my assumption. Never seen oil leaking. Never seen any signs of an issue. I'm just assuming I bottomed out and cracked the oil pan, because that's all I can think of. I don't remember bottoming out, as I obviously would've felt that.

[SatinblkF90]

Originally Posted by tractionoff

As I said before, that was just my assumption. Never seen oil leaking. Never seen any signs of an issue. I'm just assuming I bottomed out and cracked the oil pan, because that's all I can think of. I don't remember bottoming out, as I obviously would've felt that.

Right, so if you don’t remember feeling a really hard bump like that, like it’s unlikely you did that and forgot how hard that felt. I guess we will never really know what caused it.

[aj_g80]

Originally Posted by damianwo

That gentleman did not even make it to his break in service

$60k was dealers cost. Engines today on car-part cost between $10,000-$27,000. $5,000 installation is a bit much, I would say under $2,000 is a good price.

who the hell is installing an m5 motor for 2k? Pedro at the gas station?

Delusional.

[pbonsalb]

It seems to me to be more than a 1 day job for someone who has done it before. I wrote $5k thinking that was very generous. I agree $2k is low. It is way more than just bolting the engine and trans in place. The suspension needs to be reconnected and an alignment must be done, the wiring harness must be connected, at least some fluids must be replaced, etc. I have read of one shop pulling an M5 motor, rebuilding it, and reinstalling in 5 days and one shop doing it in 4 days, but those shops had experience doing the job and of course all the parts on hand.

[Stlthnmrdrd]

Originally Posted by bpma

2018 model, done 35k kms. The tune was custom, 800 hp, 960 nm. In retrospect, it was inevitable.

It blew when I floored it with 2-3 liters of RON95 petrol left in the tank, I ALWAYS got the RON100 at Shell, this was the only time I was on the road and it wasn't available. Welp.

if its custom tune to 800 on stock motor its obv gonna blow up..
75-100 increase in power just from a tune is the safest range.

[pbonsalb]

800 may be crank hp not rwhp. 800 crank is probably 700 rwhp. Plenty of cars have been making that without blowing up. Stock, some have been dyno tested at around 600 rwhp.

Also, it’s the torque that blows up the motors not the horsepower. The torque peak occurs at much lower rpm, where cylinder pressure is higher and detonation more likely. You can feed in the boost more slowly and still make 800 hp but not have low/midrange torque be as risky.

[SatinblkF90]

Originally Posted by Stlthnmrdrd

if its custom tune to 800 on stock motor its obv gonna blow up..
75-100 increase in power just from a tune is the safest range.

It’s around 720whp. F90s are fine with that power. Only reason it blew up obviously is because octane was too low, not matched for the tune. In that situation it’s VERY high risk running 91 octane on a 93 octane file. He had a very safe torque limit on it of 960nm which again is fine for the stock engine, so low octane is the culprit, even for just the ONE time he did it.

[pbonsalb]

That was dumb. If you don’t have easy access to 93 or will be traveling where it won’t be available, keep a couple of bottles of boostane in the car (or reflash to a lesser tune).

[Sophisticated Redneck]

Here is a great recipe for putting your wallet on a 25-40k diet (depending on what options you go with on the rebuild):

1 - 91/93 octane gas.

2 - Tune that cranks the boost at low rpm.

3 - Leave the transmission in manual mode stuck in high gear and low rpm (7th or 8th gear and around 1200-1500 rpm is perfect. (Side note: It is possible to do this in normal drive mode also but will take longer to find the perfect throttle position to allow maximum boost at low rpm before kickdown is applied)

4 - Punch it! Approx 75-90 percent throttle is what you are aiming for. The tune will allow you to reach peak boost at very low rpm, and as long as you don't completely floor it, the transmission won't kick down. This will now create the perfect the perfect environment for a LOW SPEED PRE IGNITION event!

5 - It may take several attempts to reach the desired results but rest assured bent rods, nuked pistons, and wrecked bearings are inevitable with this fool-proof financial diet plan!



In all seriousness, anyone with a tune should be absolutely paranoid about LSPI. That is what is wrecking engines, not an additional 100-150hp.

Mix in race gas & e85 as insurance (96+ aki should be the goal) and carry around a bottle of boostane as a backup. Google LSPI and educate yourself about it if your running a tune.

This is not a knock (pun intended) against tunes, rather it is important to educate yourself on what could happen as tuned engines are much more prone to LSPI and even stock engines can suffer from this in the right circumstances.

LSPI events will place 3000-4000+ psi loads on your pistons and rods and shatters the oil film protecting your bearings. Bumping your Horsepower up another 150hp doesn't even come within 5 percent of those numbers.