M3 top end ticking noise

[chrisS65M3]

An unfortunate first post, started my car today after work and immediately noticed this ticking noise. Wasn't there on my way to work in the morning. Some background info:

1. Rod bearings replaced 70km ago with BE bearings and ARP bolts (yes 70km it was done 1 day prior)
2. Tick increases with engine speed
3. Oil level was at 3/4 after I picked my car up from rod bearings, drove it home and it went to 1/2 full so I added 250ml of oil and it went to full after measuring again.
4. Noise is from top left side of engine
5. No engine light
6. Car is a 2008 E93 M3 with 90,700km. Old bearings were worn but not bad at all.

Pretty sure it isn't rod knock, my question would be is this lifter tick, exhaust rattle, pulley? Or something else? Wondering if somebody else has had a sound like this before. Will attach a video

Please let me know if more info is needed, thanks!!!

[SAMM3Y]

I'd probably tow it back to the service center who did the rodders... might be belt/accessory/tensioner related, but better to be safe than sorry

[Tiffany@ActiveAutowerke]

Good afternoon, Tiffany Here,
I have an E93 M3, The ticking is pretty normal, The M3's S65 ticks are infamous if I'm not mistaken. However some oils may be noisier for the motor than others, since you topped off the oil, what oil did you use? Vehicle usually (and preferably) takes BMW 10-60 oil- and is the quietest option.

[NeverL8]

Originally Posted by Tiffany@ActiveAutowerke

Good afternoon, Tiffany Here,
I have an E93 M3, The ticking is pretty normal, The M3's S65 ticks are infamous if I'm not mistaken. However some oils may be noisier for the motor than others, since you topped off the oil, what oil did you use? Vehicle usually (and preferably) takes BMW 10-60 oil- and is the quietest option.

That does not sound like a normal S65 ticking that we get. Something is definately not right.

[Tiffany@ActiveAutowerke]

Originally Posted by TheRussski

That does not sound like a normal S65 ticking that we get. Something is definately not right.

I see, now that I'm listening to it, it's definitely not that default motor tick, it's very quick and high-pitched. Could be lifter, worst case scenario rod knock, I would definitely get it checked out!

[NeverL8]

Originally Posted by Tiffany@ActiveAutowerke

I see, now that I'm listening to it, it's definitely not that default motor tick, it's very quick and high-pitched. Could be lifter, worst case scenario rod knock, I would definitely get it checked out!

It sounds like a rod knock but I’m tying to be optimistic and hope it’s a lifter or AC compressor

[Solo_M_Tech]

That is rod knock........ I'd bet money on it.
deansbimmer


Maybe we can get your input as well.

[anerbe]

Get it checked out - maybe do an oil analysis/filter pull to see if there’s shavings in there.

[chrisS65M3]

Apperently it was a shredded AC belt that was making the noise. Shop has replaced and haven't had any noise for far

[InnerBlueSkies]

Originally Posted by chrisS65M3

Apperently it was a shredded AC belt that was making the noise. Shop has replaced and haven't had any noise for far

Good to hear

[NeverL8]

Originally Posted by chrisS65M3

Apperently it was a shredded AC belt that was making the noise. Shop has replaced and haven't had any noise for far

Awesome! Great news!

[///M Power-Belgium]

Originally Posted by InnerBlueSkies

Good to hear

Originally Posted by TheRussski

Awesome! Great news!

Yes my friends !

[smyles]

Originally Posted by Tiffany@ActiveAutowerke

Good afternoon, Tiffany Here,
I have an E93 M3, The ticking is pretty normal, The M3's S65 ticks are infamous if I'm not mistaken. However some oils may be noisier for the motor than others, since you topped off the oil, what oil did you use? Vehicle usually (and preferably) takes BMW 10-60 oil- and is the quietest option.

Originally Posted by Solo_M_Tech

That is rod knock........ I'd bet money on it.
@[deansbimmer]

Note to self: avoid FL "techs"...

[donnyblaze1]

Originally Posted by chrisS65M3

Apperently it was a shredded AC belt that was making the noise. Shop has replaced and haven't had any noise for far

This is awesome news, super happy for you. That video had me cringing!

[Tiffany@ActiveAutowerke]

Originally Posted by chrisS65M3

Apperently it was a shredded AC belt that was making the noise. Shop has replaced and haven't had any noise for far

That's awesome!!!! I'm glad everything turned out great!