Anything different about the ZHP maintenance over a reg 330i?

[danewilson77]

Much more prevalent on the ZHP, though, no?

Yes....

Here is the "dip" stuff

http://www.zhpmafia.com/forums/showt...aler-fix/page6

http://www.zhpmafia.com/forums/showt...330-ZHP/page11

More here as well.

http://www.bimmerfest.com/forums/arc.../t-589252.html

[zj96sc]

Is "the rattle" that issue that has to do with the upgraded cams? I've never heard of the "4k dip issues" though. Whats that?

BRGcoopahS, the "rattle issue" does indeed result from the upgraded cams that come in the ZHP.

The higher lift from the cams is what ultimately creates the helical gear wear and harmonic vibration of the vanos mechanism, which we hear and call "VANOS rattle." This is all detailed in Beisan and Dr. Vanos literature.

This issue will be uniquely ZHP (or non-ZHP with crane cams will be a "high likelihood" case as well) but can easily be addressed with the Beisan systems seal/rattle kit or a Dr. Vanos replacement vanos. Max you're looking at is $250 and should certainly not be a deterrent to purchasing a ZHP.

"4k dip issue" is a noticeable power loss at/near 4000rpm under heavy throttle, due to some rumormill mix of DISA valve movement/flutter, knock sensor misdiagnosing said movement, timing retardation as a result, etc. Long story short, this is not a uniquely ZHP issue and not a "maintenance" problem but more a driveability annoyance.

The ZHP is a great choice BECAUSE it does not really bring any increased maintenance costs to the table like an M car would.

Welcome to the forum - I look forward to seeing you around, and happy hunting.

Paul

[Hermes]

^ great explanation. No real problems, just minor issues

[kayger12]

^ great explanation. No real problems, just minor issues

+1

[BRGcoopahS]

Thanks everyone. Good to know they are just minor issues. $250 for a vanos rattle is nothing at all. If It does have the rattle though, is it something that has to be fixed soon?

edit: kayger 12: your ZHP is EXACTLY what my dad would want. Best color IMO.

[kayger12]

Thanks everyone. Good to know they are just minor issues. $250 for a vanos rattle is nothing at all. If It does have the rattle though, is it something that has to be fixed soon?

edit: kayger 12: your ZHP is EXACTLY what my dad would want. Best color IMO.

Thanks, sir.

And no, the rattle didn't present any risk, so there's no reason to jump on fixing it.

Mine's been doing it since I bought her. I'll be doing the Beisan kit in the spring.

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