Good Deal on Exhaust Hub

[02_lsb]

I am not affiliated with the seller, but it seems like a good deal if you’re about to jump into a VANOS job.

https://www.ebay.com/itm/2001-2006-BMW-E46-M3-S54-Exhaust-Hub-Camshaft-OEM-/234220068075?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

[cobra]

No way. Unknown mileage on that. It could have crack propagation and you can't tell until it snaps.

Better to buy the brand new Beisan one for $400.

[02_lsb]

This is certainly news to me. I was under the impression it’s either intact or not.

[cobra]

This is certainly news to me. I was under the impression it’s either intact or not.

The tabs fatigue over time. It's such a hard brittle material that you can't see a crack without X-Raying it.

[digger]

agree doesn't seem like a deal to me. You dont need to x-ray to find cracks as dye pen will likely work but even if you did x-ray and there are no cracks it means little as it might initiate in the next week it is put to use. It is caused accumulated fatigue damage.

[jet_dogg]

I would just buy the turbotoys hub.

[02_lsb]

Interesting. Are there any known failures of, original to car, hubs post BEISAN “bulletproof”?

[02_lsb]

What seems like forever ago, I fixed my vanos using beisan parts. I pulled it all apart and found both my exhaust hub and disk to be in very good shape; among other things, I bought the redrilled beisan disk and put the old hub back in. Also, at the time, Turbotoy had some sort of a manufacturing defect where all of their hubs failed and they were remanufacturing them to address the said issue. Old M3 Forum consensus was either use your original, undamaged hub or a used one.

[cobra]

Interesting. Are there any known failures of, original to car, hubs post BEISAN “bulletproof”?

Not that I know of, but wouldn't risk it.

[jet_dogg]

Unfortunately beisan had a major machining flaw with their billet discs which I would avoid completely for people bulletproofing on a budget.

[02_lsb]

Hmm. I have Raj’s old disk which is a redrilled OE unit. I’ve been out of the loop for a bit. Also, not sure on the “budget” but, again, at the time you’d get everything from Beisan (follow the instructions verbatim) with the exception of chain guide (you’d buy OE; wear/tear item - now available from Beisan) and cam bolts (also OE).

[bmw m3 s50]

Unfortunately beisan had a major machining flaw with their billet discs which I would avoid completely for people bulletproofing on a budget.

Any chance you could expand on this? What happened and what to avoid? Also has Beisan addressed the machining flaw?

[02_lsb]

… and any confirmed / documented Hub failures post old school redrilled Beisan Disk install. Please. The entire concept of not reusing the OE hub is news to me.

[Cubieman]

I had an issue with the inner diameter of the Beisan disc being a too large causing insufficient oil pressure, thus failing a vanos oil test/oil pressure test (40bar vs 100bar).
Raj was very nice about it, he told me the issues with my disc (once returned and analyzed) and refunded not only the money for the disc but my entire purchase, chain guide, seals, pack etc.
It wasn't great to have to take it all apart again but shit happens. I was sent an OE re-drilled disc and everything worked as it should.

[jet_dogg]

Any chance you could expand on this? What happened and what to avoid? Also has Beisan addressed the machining flaw?

See post above mine. There was a 32 page thread by cubieman about the billet discs.

Tolerances have to be very precise when machining replica parts otherwise shit like this happens. I'm actually surprised that passed any sort of QC.