What did you do for your ZHP/ BMW / MINI today? #2

[gmurphy]

Inspected and cleaned the front brakes.

Good work.


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[Vas]

Good work.


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Just chasing down a noise.

[LivesNearCostco]

Passed California smog and renewed registration. Reg good for 1 year, smog good for 2 years.

All sniffer numbers well below max limits but at 15mph the HC, CO and NO readings were all above average (for passing vehicles--I assume all passing vehicles, not just M54 engines). At 25mph, they were all at or below average. For example...

Hydrocarbons: At 15mph, measured 11, average is 4 (max 52). At 25mph, measured 5, average 4 (max 36)
Carbon monoxide: At 15 mph, measured 0.13, average 0.01 (max 0.49). At 25mph, measured 0.02, average is 0.01 (max 0.47)
Nitrous Oxide: at 15 mph, measured 69, average 47 (max 425). At 25mph, measured 10, average 26 (max 712)


Could it be BMW or Jim Comforti (Shark Injector) tuned it that way to run a little richer at low speeds and closer to stoichiometric at higher speeds? Looks like 15/25 mph test runs were done in different gears, since 15mph was at 1565 RPM and 25mph was at 1772 RPM.

[Imola.ZHP]

Phew, I didn't intend to do what I did tonight, but after my sister came by (I'm at work) with her rearview mirror hanging by the wires (damn mount failed, pulled a chunk of glass with it) on her recently new (to her) e93, I was kinda "in the mood." Sucks, still not quite sure about that one. Glass is now pretty thin where the chunk is missing, was tempted just to glue it back in. She paid for a AAA extended warranty (unbeknownst to me, I probably wouldn't have advised it) and thinks they might cover it. We'll see.

Ok, so on to the ZHP! I've had this odd idling noise for over a year now and I always was pretty sure it was/is the hydraulic tensioner idler/pulley. So I tore the car down enough to verify this, yes it is the only thing that is noise when turned. I replaced the other pulley's at 100k, I didn't replace this one because I was under the impression that the idler/pulley was one piece with the actual tensioner. This, however is not the case and now I'm wishing I had done this a year ago, or back at 100k.

So here is quick question that hopefully won't get lost in the April Fools day blinker fluid conversation. At 124k, would it be smart to go ahead and replace the actual hydraulic tensioner too? It would be an extra $81, which I realize isn't much considering the car is paid for, but is it necessary? Belt is nice and tight!

Thanks!

[Hermes]

Passed California smog and renewed registration. Reg good for 1 year, smog good for 2 years.

All sniffer numbers well below max limits but at 15mph the HC, CO and NO readings were all above average (for passing vehicles--I assume all passing vehicles, not just M54 engines). At 25mph, they were all at or below average. For example...

Hydrocarbons: At 15mph, measured 11, average is 4 (max 52). At 25mph, measured 5, average 4 (max 36)
Carbon monoxide: At 15 mph, measured 0.13, average 0.01 (max 0.49). At 25mph, measured 0.02, average is 0.01 (max 0.47)
Nitrous Oxide: at 15 mph, measured 69, average 47 (max 425). At 25mph, measured 10, average 26 (max 712)


Could it be BMW or Jim Comforti (Shark Injector) tuned it that way to run a little richer at low speeds and closer to stoichiometric at higher speeds? Looks like 15/25 mph test runs were done in different gears, since 15mph was at 1565 RPM and 25mph was at 1772 RPM.

Blue car was at higher RPM's, but that might be because of the diff ratio:

[cakM3]

JP...nice to see your blue car pass

I took my ///M out of hibernation today....will be looking to do some post-hibernation maintenance soon Man did it feel (and sound) good while driving it in to work this morning

Thank you BMW for the awesome S54 sound, and to Kyle for your awesome stereo install

[danewilson77]

Oddments tray install compete. 2 minutes, and I had 1 beer.

[Hermes]

JP...nice to see your blue car pass

That was about 2 weeks ago, I was just posting for comparison numbers


Edit: the car was also tested with whatever non-ethanol gas Bruce put in it before he sent it to me, so that might be part of why my numbers were so low

[stephenkirsh]

Oddments tray install compete. 2 minutes, and I had 1 beer.

1 beer in 2 minutes? Savor the flavor, man!

[Vas]

Ok, so on to the ZHP! I've had this odd idling noise for over a year now and I always was pretty sure it was/is the hydraulic tensioner idler/pulley. So I tore the car down enough to verify this, yes it is the only thing that is noise when turned. I replaced the other pulley's at 100k, I didn't replace this one because I was under the impression that the idler/pulley was one piece with the actual tensioner. This, however is not the case and now I'm wishing I had done this a year ago, or back at 100k.

So here is quick question that hopefully won't get lost in the April Fools day blinker fluid conversation. At 124k, would it be smart to go ahead and replace the actual hydraulic tensioner too? It would be an extra $81, which I realize isn't much considering the car is paid for, but is it necessary? Belt is nice and tight!

Thanks!

I had replaced my complete unit at 109,125. The belt was also tight but upon removal, the tensioner was not as strong as a new unit. IMO I would get it and know that you wont have to think about it for the next 100k.