Alternator Options

[eacmen]

New Valeo unit seems to be doing the job.

Old alt was 13.7v at cold idle. New alt is 14.1.

Wont call it success until I do a track session though and see the data.


Sent from my iPhone using Tapatalk

[Shonky]

My old one from my 08/2004 build car is marked S29AN04 so that would appear to line up.

[eacmen]

Valeo is a french company so I'm assuming S = semaine (week). An is year. So 26th week of 2004.

Wow, 4 years of french and I would have never made that connection. Thanks!


Sent from my iPhone using Tapatalk

[heinzboehmer]

Anyone aware of how to read Valeo date code? This is what I pulled. I assume since the BMW logo is on it that it was original to the car.





Sent from my iPhone using Tapatalk

Valeo is a french company so I'm assuming S = semaine (week). An is year. So 26th week of 2004.

[eacmen]

Anyone aware of how to read Valeo date code? This is what I pulled. I assume since the BMW logo is on it that it was original to the car.





Sent from my iPhone using Tapatalk

[PSUEng]

Also in stock at RockAuto--I grabbed one.

[eacmen]

Were you able to get the "correct" alternator, or did you get the X5 version?

I got the correct one from bimmerworld. They are back in stock


Sent from my iPhone using Tapatalk

[D-O]

Were you able to get the "correct" alternator, or did you get the X5 version?

[eacmen]

Picked up a new Valeo unit from Bimmerworld. The unit I pulled out was also Valeo. I assume it was the original alternator on the car. We'll see if it solves my voltage dip problems!

[whoissuprme]

I was away for a little bit and the car is still at my buddies shop. I will be going there tomorrow (10/13/22) and will take measurements on the pulley diameter to make sure it's the same. While I was swapping in the new alternator I decided to swap out all the pulleys with new ones and do a belt service and a new clutch fan. Stay tuned for more info. I'll report back with my findings!

[heinzboehmer]

Hint for ease of alternator removal: use a socket as spacer around the colored nut and use one of the alternator bolt to pull the nut rearward to free it from the oil filter housing bracket, then it can be lifted out easily. Don't tap on the front bolt using hammer to move the nut rearward as this could dent the radiator or crack the alternator ear where the nut is embedded.

That's a great tip. I've also learned (the hard way) that tapping on the alternator casing can unalign both halves of the alternator casing and cause the bearings to bind. So yeah don't tap it when installing or uninstalling.

[sapote]

Great find for second source!

Hint for ease of alternator removal: use a socket as spacer around the colored nut and use one of the alternator bolt to pull the nut rearward to free it from the oil filter housing bracket, then it can be lifted out easily. Don't tap on the front bolt using hammer to move the nut rearward as this could dent the radiator or crack the alternator ear where the nut is embedded.

[old///MFanatic]

Pulley is the same diameter?

Was wondering this aswell. Are they same diameter and/or same spline so they be swapped?
The offset looks to be about same when installed so that’s not an issue.

[bigjae46]

The plug is the same? If it wasn't I think you can swap the voltage regulator.

Either way...GREAT INFO! Thanks!

[whoissuprme]

Nice! Thank you!

Pulley is the same diameter? No issues running? I'm going to warrantee my just installed remand bosch...might replace with this on my track car.

The car started right up no issues. But my car has been off the battery tender now for like 3.5 weeks so I'm pretty sure I killed my battery lol. I have it on a trickle charge hopefully it comes back to life otherwise I'm going to replace it with an odyssey