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

[Fenrir]

I did a cooling system refresh before the car was stored. So the pump is brand new. Less than 10k on it. AC checks out fine as does the alternator. I've been using a really long screwdriver as a steth. Not perfect but it works lol.

The noise seemes to be coming from the tensioner pulley. Which is brand new. I just out it on. I figured it may have been the metal dust cap/washer on the back. Took to the bench machine and cleaned/buffed it. Still sqeaks. Belt is new also. So.... I'm stumped.

water pump bearing? might be worth picking up a stethoscope from autozone to pinpoint the problem area

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[Sockethead]

There's not a whole lot of grease inside some of the new pulleys, might want to check that. Just because it's new doesn't mean it can't be defective

[Fenrir]

Goooood point. If nothing else, I can repack them.

There's not a whole lot of grease inside some of the new pulleys, might want to check that. Just because it's new doesn't mean it can't be defective

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[Sockethead]

Or just stick your old pulley on there for testing if wasn't noisy. No need to take the whole tensioner off...

[das boots]

Installed rear windshield spoiler. Still need to wax the area.

[ZHP Dave]

Ordered aluminum rear subframe mounts, and delrin/aluminum diff bushings.

[Vas]

Replaced the ccv system. All hoses, air distribution box, tb gasket, iacv grommet and did the o2 pilot mod.

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[danewilson77]

Installed rear windshield spoiler. Still need to wax the area.

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[Fenrir]

Or just stick your old pulley on there for testing if wasn't noisy. No need to take the whole tensioner off...

Well I was able to get to the bottom of that issue today. The old tension pully bolt was stripped. The T50 socket was biting enough to make it feel like it was torqued on. It wasn't. I pulled the old bolt and replaced it. No torque lets the whole assembly spin. So it squeaks.... Well it sounded more like a banshee.

Geewiz info for anyone replacing the hydraulic tension pully bolt. Skip every parts supplier out there. They'll want way more than the stock bolt is worth. Home Depot carries the same bolt in hardened steel for 98 cents for a pair.

It's an M10x25 8mm hex and fits perfectly. 98 cents vs 12 bucks from a supplier more than covers the fuel cost to pick it up locally. I think I'd be almost ashamed to admit how many automotive bolts I've replaced via local venues. And usually higher quality than stock.

Obvious OEM stripped bolt is obvious below.



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[Sockethead]

It doesn't help that one tensioner is a torx and the other is hex... I can never remember which is which