Ran m20 with no oil, now sounds terrible😳

[hallockg806]

Okay I'm 18, this is my first car, I got it a month ago. Yes I don't know that much, and I'm trying to learn, you can't blame me, we all started somewhere. Anyways I changed the oil and didn't find any metal or pearlescent coloring in the oil and I put in a fresh oil filter long with Valvoline High Milage Full Synthetic 10w-30. It seems to be running perfect now.

[ThatOneEuroE30]

Whew....this isn't real, right?

Im wondering the same thing. May i ask how old are you OP? Seem rather young or just clueless

[ELVA164]

Whew....this isn't real, right?

[hallockg806]

Why do you think it was your top end and not the bottom end?

It sounds like my valves

[bangn]

[rturbo 930]

Why do you think it was your top end and not the bottom end?

[hallockg806]

really................. WOW............

Ok 1st your compresion is likely fine thats the least of your worries . Your rod and main bearings are SHOT.....

You need to drain your oil out and look for metal fragments, I am willing to bet that it comes out looking very pearlessent with lots of fine bearing material in it. After you pull the filter cut it open and look and see how much of your bearings are in there. That diesel noise you hear is ROD KNOCK, she be junk and every foot you drive is pure borrowed time.....

With as hard as it is to source good running M20 power plants used now a days, I would park it sooner rather than latter, and start looking for a good running M20 variant, or start collecting rebuild parts. Bearings, rings, water pump, oil pump and pick up, master gasket kit, head bolts, timing set, for bare minimum starting point. Hope you didnt fubar your crank too badly by spinning a bearing and need a new one, or need a few new rods and pins........

I'll change the oil tomorrow and report my findings. If I get metal I'll get a whole new engine, if not, I'll rebuild the top end. I believe the noise was just in the too end but I don't completely know yet. Thanks for the help!!:)

[hallockg806]

if the noise is topend it will live a while. if its bearing then baby it if you have to

I'm changing the oil tomorrow and if I see a lot of metal in the oil, then I'll get a new engine, if not, I'll drive it till it breaks, or rebuild the top end ;D

[Danny]

You don't need oil. Weighs too much and slows down moving parts. You did the right thing before. LTW E30 is best E30.

[digger]

if the noise is topend it will live a while. if its bearing then baby it if you have to

[hallockg806]

sounds like your engine is fine and its fixed itself

Well gee, I hope so

[hallockg806]

BMWs are tough. Drive it till it ventilates. It may last a long while.
I've taken apart a few M10's that should have grenaded, and yet they were still running.

Budget for an engine as soon as you can, though. Especially if you think track days are in your future.

t

For sure, I'm looking at new engines, and I'll just wait for a good deal

[hallockg806]

use this

For sure. I'll try it.

[hallockg806]

Sticky?

Maybe a little bit of stick

[bangn]

use this