As my 2006 Z4 Coupe hits 70K miles I was wondering about the long term reliability of the magnesium/aluminum core and the N52 in general. I've had no-issue 200K experiences with my E30s (eta and is) and my E46. I'm hoping for the same with this vehicle. I figure this motor has been in service long enough now that any inherent problems would be well known.
Does anyone know how this motor has been holding up in general?
Thanks, Bill
N52
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Overall it's a great engine, my 2008 Z4 3.0si had to be the quickest non M car I ever owned ,Felt the engine was under rated power wise.incredible response and power delivery.. of course with the open diff,it was hard to keep the power down )
Anyways, Please be aware that the electric water pump does not last forever. vanos solenoids can become an issue (good thing they relatively easy to change).Valvetronic(could get sluggish,DME will detect issues),when changing plugs to make sure they are torqued back in .
My advise is to scan the DME for codes every once in awhile for any pending faults , DME has quite a few protection methods built in . any E/pump faults will display as pending if it only happens once and will be no MIL until fault becomes present or happens more frequently.
The number one thing you'll know if the cooling circuit is in distress is the aux fan will spool up at high speed and MIL will be displayed.
Valvetronic motor can get a little sluggish over time(electric motor attached to valve cover to the intermediate lever for intake valves) .
this motor relies on a healthy charging system and strong battery . be sure you are good in that area.
Enjoy your car! , change the oil regularly and you'll be fine.
Anyways, Please be aware that the electric water pump does not last forever. vanos solenoids can become an issue (good thing they relatively easy to change).Valvetronic(could get sluggish,DME will detect issues),when changing plugs to make sure they are torqued back in .
My advise is to scan the DME for codes every once in awhile for any pending faults , DME has quite a few protection methods built in . any E/pump faults will display as pending if it only happens once and will be no MIL until fault becomes present or happens more frequently.
The number one thing you'll know if the cooling circuit is in distress is the aux fan will spool up at high speed and MIL will be displayed.
Valvetronic motor can get a little sluggish over time(electric motor attached to valve cover to the intermediate lever for intake valves) .
this motor relies on a healthy charging system and strong battery . be sure you are good in that area.
Enjoy your car! , change the oil regularly and you'll be fine.
Ray
2011 X5d
2018 Shelby GT350
2011 X5d
2018 Shelby GT350
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- Joined: Wed Nov 10, 2004 1:37 pm
I can tell you I have been seeing in the vincinity of 80-100k miles, some will fail earlier , some later..victory1auto wrote:Ray: >Please be aware that the electric water pump does not last forever.< You are a master of understatement! Is there a replacement interval you recommend for the pump rather than waiting for it to fail?
please do not use this as a guage for replacement..BMW does not suggest a replacement interval.Its all just from experience
Ray
2011 X5d
2018 Shelby GT350
2011 X5d
2018 Shelby GT350
Thanks very much Vic and Ray! I'll definitely stay on top of the codes and keep an eye out for the signs you've noted. The battery comment is timely as it still has the original; I was contemplating replacing it and now I will. As far as oil changes, I go 5K with the BMW synthetic with a change before and after any track days.
Thanks again.
Thanks again.