Cold start rattle 2-3 seconds then gone.

[fattycharged]

The shop said they can try to clean the crank and throw in new rod bearings and plastiguage them but there is a risk. What do you guys think?

I've done this before, it worked until it didn't.


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[eacmen]

The shop said they can try to clean the crank and throw in new rod bearings and plastiguage them but there is a risk. What do you guys think?

you can't fix the crank with it on the car. jourals needs to be polished mic'd and balanced.

the crank needs to come out and the mains replaced as well.

With the damage to the bearings all the oil lines, oil cooler, and oil filter housing replaced to get rid of any metal shavings.

if they're going to do it right might as well let them? But if they are trying to shortcut it without doing it right i would push back

[sapote]

The shop said they can try to clean the crank and throw in new rod bearings and plastiguage them but there is a risk. What do you guys think?

Don't know what clean mean, but the journals must be smooth and polished shiny like a mirror to avoid future damages.

[Nikolaid89]

The shop said they can try to clean the crank and throw in new rod bearings and plastiguage them but there is a risk. What do you guys think?

[sapote]

Just wanted to update this with my issues. I finally got around to getting the oil pan pulled and inspecting the rod bearings and they are completely damaged with damage to the crank as well. The shop said they can try to clean up the crank and put new bearings in but it is a risk that the tolerance will be off. This is my BE Bearings with only 1300 miles on them, completely damaged. The shop said it's some of the worst rod bearing damage they've seen.

How many miles on these bad new bearings? You have 4 bearings down to copper while Andratch caught it early with only one bearing down to copper. Yours clearance much be wider than his bad clearance, so there was so low oil pressure in those bearings, leading to damaged crank too.

[sapote]

Even after the car sat for 2 weeks, no noise on startup. So, I still 100% attribute the fix to the bearings/bolts/torques.

We know chain slack caused rattling noise until the pressurized tensioner push hard on the chain, but I was wondering why the bad BE bearings also caused the similar rattling noise in the first few seconds?
In your case, the bad new bearings shed their soft layers so fast, and after only 1000 miles or so it was down to the copper layer, and the bearing clearance changed from 0.0015" when new to 0.006", for example. With zero oil pressure at start up the wide clearing of that single bearing caused the rattle until a decent oil pressure built up.

[ac427]

Well hopefully only an engine out

[M3LSB.Gab]

time for a part out !

[Nikolaid89]

Just wanted to update this with my issues. I finally got around to getting the oil pan pulled and inspecting the rod bearings and they are completely damaged with damage to the crank as well. The shop said they can try to clean up the crank and put new bearings in but it is a risk that the tolerance will be off. This is my BE Bearings with only 1300 miles on them, completely damaged. The shop said it's some of the worst rod bearing damage they've seen.

[chris719]

Update, just got Blackstone Analysis back. Iron is 22, Copper is 42, and Lead is 83. This is 1,300 miles after getting my rod bearings done with BE bearings in December 2024.

Very suspicious. I'd probably pull the pan to inspect, sadly.

[Ramage]

Update, just got Blackstone Analysis back. Iron is 22, Copper is 42, and Lead is 83. This is 1,300 miles after getting my rod bearings done with BE bearings in December 2024.

I hate to say it but it is time to get back in there, something is wrong.

Example:
I KNOW for sure (I have the evidence) I had a spun bearing on cylinder #5 (caught it after I had already replaced my bearings and put it all back together. Stupid me...) and my car is still doing fine, no particles in my Oil Filter and sacrificial metals are trending down in my Oil Analysis.

June 20th - 1000 Miles (1600KM) after swapping in new OEM bearings Oil Analysis showed 10 Iron, 19 Lead, and 12 Copper.
July 11 - 1200 Miles (2000KM I have been driving ALOT) Oil Report is is showing 7 Iron, 5 Lead, and 6 Copper.

[Nikolaid89]

Update, just got Blackstone Analysis back. Iron is 22, Copper is 42, and Lead is 83. This is 1,300 miles after getting my rod bearings done with BE bearings in December 2024.

[chris719]

Wanted to update this forum with my own experience. I had my rod bearings replaced with BE bearings 1300 miles ago (December 2024) and about 2 weeks ago I got the same cold start noise and 2-3k rpm noise that Andratch was getting. I just changed my oil to send it off to Blackstone and found metal flakes in the oil filter. Here is a link to what my engine noise sounds like and some pictures of what the flakes look like. Currently waiting to see what Blackstone says and will go from there.

I wouldn't rely on Blackstone. Large particles are not picked up by the method they use for the ICP spectral analysis. Several S65 blew up right after a "good" Blackstone report. If you see metal then I would probably just drop the pan but that's me.

[Nikolaid89]

Wanted to update this forum with my own experience. I had my rod bearings replaced with BE bearings 1300 miles ago (December 2024) and about 2 weeks ago I got the same cold start noise and 2-3k rpm noise that Andratch was getting. I just changed my oil to send it off to Blackstone and found metal flakes in the oil filter. Here is a link to what my engine noise sounds like and some pictures of what the flakes look like. Currently waiting to see what Blackstone says and will go from there.

https://www.youtube.com/shorts/n5VXBr_9ozQ

[Ramage]

What year is your car ? Did you swap out the oil pump? Cause the oil pump might be the 1, with the Alloy piston in it
04 to 06, used a telfon coated, aluminum piston that didn't work at all, that is why 04 to 06 are more likely to spin shells

latest 2015 update has a diamond coated piston


Source, should automatically start at 36min mark

https://youtu.be/_93z82NQZV4?t=2189

Thanks, I saw this when you posted it in May.

I have already ordered both DLC coated pistons from Burkhart for when I open her back up next April (if my oil reports clear up and I hear no knocking before then). Not sure if my 2004 has the groove or not and I have not been able to find a reliable way to be certain without accessing the oil pump so I ordered both and will return the one I do not need.

Cheers