Aftermarket Rod Bearings Spun

[Assimilator1]

Except you'd need to measure every single set, from the rod bearing condition thread at least!

[IamFODI]

I mean, just starting from now would be an improvement!

[Assimilator1]

True

[Scharbag]

Originally Posted by Excers

Mine were installed by the pretty much most reputable shop in the area. You can still spin a bearing lol.

There is that, but even good shops can make mistakes.

I would be so very surprised if a set of properly installed BE bearings spun. Look at SYT_Shadow and his main failure. Bearing #1 took a beating and did not spin.

Cheers,

[Assimilator1]

SYT Shadow
How many miles had those BE bearings done? (The op in both blown engines thread don't say. Other than 25k with your ownership).

[SYT_Shadow]

Originally Posted by Assimilator1

SYT Shadow
How many miles had those BE bearings done? (The op in both blown engines thread don't say. Other than 25k with your ownership).

They did 25k miles, over 100 track days. Two drivers, fastest run group with Porsche Club of America.

When you look at the engine teardown you see the pistons are beat to crap, yet the rod bearings almost look new. BE bearings FTW

[Helmsman]

Originally Posted by IamFODI

Okay but...

1. How do we know the discoloration on 702/703 bearings really represents breaking through one important layer to another vs. some other mechanism (e.g. tribochemical) that turns out to be benign? Maybe sometimes it's one thing and sometimes it's another. Could we tell the difference just by looking at the kinds of pics people post?

2. To the extent that we really are seeing wear, how do we know whether it's different from the beneficial effects that Glyco describes in the excerpt I posted?

3. Given that we've seen this discoloration on very low mileage bearings, how do we know it's not just some break-in-like process that happens quickly and then doesn't progress much over the life of the bearing?

Also curious when it comes to 702/703 as shells regardless of mileage seem discolored, still without failing.
Thread below is yet another interesting input from Deansbimmer talking about the damage of surface/1st layer of the LCI shell.
I don't believe material wear/thickness variations is measured by anyone though.

Deansbimmer RB wear: https://www.m3post.com/forums/showthread.php?t=1486113

[Assimilator1]

Originally Posted by SYT_Shadow

They did 25k miles, over 100 track days. Two drivers, fastest run group with Porsche Club of America.

When you look at the engine teardown you see the pistons are beat to crap, yet the rod bearings almost look new. BE bearings FTW

Yea roger that, bar the ones by no1 mains, they look good (I've added your BE RBs photo link to my small collection of aftermarket bearings that have been removed).

Back to the mileage, yea I know you did 25k on them, but I thought you said they were changed before you got the car? How many miles had they done then? I'm after the total mileage on the BE RBs .

[SYT_Shadow]

Originally Posted by Assimilator1

Yea roger that, bar the ones by no1 mains, they look good (I've added your BE RBs photo link to my small collection of aftermarket bearings that have been removed).

Back to the mileage, yea I know you did 25k on them, but I thought you said they were changed before you got the car? How many miles had they done then? I'm after the total mileage on the BE RBs .

I swapped them the weekend after I bought the car, so that's the total mileage. The car is only used for the track, so the only street miles it has is driving to/from the track.

[Assimilator1]

Ah ok, thanks for letting us know .

[MPower7]

Originally Posted by Assimilator1

Yea roger that, bar the ones by no1 mains, they look good (I've added your BE RBs photo link to my small collection of aftermarket bearings that have been removed).

Back to the mileage, yea I know you did 25k on them, but I thought you said they were changed before you got the car? How many miles had they done then? I'm after the total mileage on the BE RBs .

Can you share the other pictures of the pulled aftermarket bearings? I've had BE in my car for about 3 years now.

[Assimilator1]

I posted the links here https://www.m3post.com/forums/showpo...postcount=1908
Towards the end of it.

[CPWINCH]

this is why you don't run fart tunes. Stop running burble tunes please you guys look so dumb

[Assimilator1]

Huh? Burble tunes?

[NeverL8]

Originally Posted by CPWINCH

this is why you don't run fart tunes. Stop running burble tunes please you guys look so dumb

Que?



But I agree on burble tunes

[SilverSlug]

Indeed this isn't the first time I've heard of Gintani burble tunes creating major problems… and this one is a doozy.

[Assimilator1]

Is anyone going to tell me what a burble tune is?

[MP0W3RD]

Originally Posted by Assimilator1

Is anyone going to tell me what a burble tune is?

Originally Posted by Assimilator1

Is anyone going to tell me what a burble tune is?

A burble tune is something some tuners offer that will allow your exhaust to make some pretty obnoxious pops and bangs.

It really only works with a catless exhaust system, as the tune would just destroy cats if you have them installed.

If it's your thing they are quite sorted out these days. They can shoot flames.

I had it for a while but it drew far too much attention and I've heard it causes excess wear in your engine.

I prefer the natural BRAHHPS of the engine

[CPWINCH]

Originally Posted by Assimilator1

Is anyone going to tell me what a burble tune is?

hopefully you are lucky enough not to have every Instagram having fuckboy have their cars "shoot flames" where you live.

they essentially tune it incorrectly to run rich on decal which causes super annoying "burbles" and farts. Sounds like shit and is obnoxious. The worst part? the OEMs are implementing it to sound cool.

[RedScytheM3]

Originally Posted by Assimilator1

Is anyone going to tell me what a burble tune is?

Enjoy

[Ximian]

I ordered 3 gallons of coolant when I only needed one. Anyone considering a burble tune is welcome to come pick up a coolant cocktail, free of charge.

[Assimilator1]

Coolant cocktail??

Originally Posted by CPWINCH

hopefully you are lucky enough not to have every Instagram having fuckboy have their cars "shoot flames" where you live.

they essentially tune it incorrectly to run rich on decal which causes super annoying "burbles" and farts. Sounds like shit and is obnoxious. The worst part? the OEMs are implementing it to sound cool.

Ah yea I f*****g hate those too!!! Try living on a main road with selfish dicks who have those tunes backing firing (that's what it is really) nearly every day or so, really annoying! We even had some knackered 15yr old Transit flat bed doing it! I came close to getting him nicked for it, but ironically just as I finally got his full reg his van stopped doing it.
Anyway, rant over!

I don't know how Manufacturers get away with doing it, you'd think that'd breach noise limits?

MP0W3RD
Glad you saw the light and ditched it

Thanks for the answers guys.