Help with low VANOS oil pressure!

[maupineda]

Somehow my mechanic ended up finding brand new old-stock VANOS units. They typically retail for $3k+ but he’s able to get them for much cheaper. I figure it can’t get much better than an entirely new unit (new helical gears, coil pack, etc).

Going to have the brand new pump disc sent out to Beisan to be machined, and go through most of the seals in the unit with Beisan ones just to be safe. Unit has likely been sitting for years.

Mmm, if it is an new OE unit, don’t mess with it. The reason why seals fail was people following the OIC recommended by BMW. There is nothing wrong with them, and if you care for the car the VANOS will outlast you 😂. I would probably be more inclined to change the hub, than having your disc machined. Risk of it being swapped? I am that paranoic with my things lol

[kokgo20]

In my opinion that is a bad idea. Just buy new “A” items specific to the S54. The s62 items add preload and slow the response of the VANOS. If your splines do not have axial play, leave them alone.

That’s interesting
I thought the S62 springs are what’s recommended

[cornerbalanced]

Mmm, if it is an new OE unit, don’t mess with it. The reason why seals fail was people following the OIC recommended by BMW. There is nothing wrong with them, and if you care for the car the VANOS will outlast you 😂. I would probably be more inclined to change the hub, than having your disc machined. Risk of it being swapped? I am that paranoic with my things lol

My mechanic was going to discreetly mark it so we knew we were getting the same unit back aha. Also paranoid about that stuff. My only worry is, these units have likely been sitting for 10+ years. Just worried about the seals being extremely dried out at this point.

[cornerbalanced]

That’s interesting
I thought the S62 springs are what’s recommended

Same here, it’s what Beisan recommends at least.

https://www.beisansystems.com/procedures/s62_vanos_rattle_procedure.htm

[EthanolTurbo]

thegenius46m Didn't you tell me that swapping the pump disc causes more issues and Beisan sends back shitty ones?

[cornerbalanced]

thegenius46m Didn't you tell me that swapping the pump disc causes more issues and Beisan sends back shitty ones?

I have also heard this...decided to keep my brand new oil pump disc and just go with the Beisan Hub. Don't want to risk anything.

[sapote]

I believe my mechanic recommended S62 diaphragm springs for anti-rattle? I know my cam sleeve bolts were done, but close to 10 years ago with OE bolts. I’ll probably have him throw in lang racing bolts while he’s in there.

If the stock spring washer causes no rattle, keep it. Stronger S62 causes more wear and load down the vanos.

[sapote]

I would probably be more inclined to change the hub, than having your disc machined. Risk of it being swapped?

This is why I asked my friend to drill the disk, as vendor might accidentally swaps my disk. Drill disk instead of after market hub and save the money.

[sapote]

these units have likely been sitting for 10+ years. Just worried about the seals being extremely dried out at this point..

I would remove the pistons and feel the seals.