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Posted (edited)

Yes I went there and posted the results on rennlist(nothing on this particular item)...how in the world would they fix this issue...aren't the oil ports part of the engine casting?

Edited by 500
  • Admin
Posted

I would suggest that we all hold off on this thread until someone has facts - otherwise it is just speculation.

Besides Porsche should be notifying any owners affected.

Posted (edited)

Service campaign is W733, dated may 25, 2007 and effects 112 cars worldwide, if the oil supply bore is missing (cylinders 1-3) a new cylinder head will be installed. The notice also effects a very small # boxsters and caymans. The chances are small that a car was effected but a rennlister here in the US already received notice.

Edited by 500
Posted

All, after much anxiety about this issue, I have collected all the facts from my local Porsche dealer. Here are the facts.

Bulletin Notice Number W733 issued on May 25, 2007

"This is to inform you of a voluntary Workshop Campaign on certain 2007 model year BoxsterS/Cayman S, 911 Carrera/S and 911 Carrera 4/4S vehicles. There is the possibility that some engines were manufactured which may lack an oil supply bore for the chain tensioner on the cylinder head of cylinder bank 1-3 due to a production flaw. As a result, the chain can jump out of place in certain operating states and can cause engine damage. To remedy the situation:

1) Check matching number on cylinder head of cylinder bank 1-3.

2) Check that the cylinder head of cylinder bank 1-3 has the required oil supply bore for the chain tensioner.

3) Replace cylinder head of cylinder bank 1-3.

A total of 112 US, Puerto Rican and Canadian vehicles fall within the scope of this Workshop Campaign. Very Important! Use the VIN range below as a general guideline. The VIN can be checked in the WWS for confirmation of an open workshop campaign (Also see PIWIS VIN information). Refer to Attachment A to determine if a particular vehicle is eligible for this workshop campaign. Also, the VIN can be checked via the VRU (Voice Response System) for any open listing."

THIS ONLY IMPACTS 2007 YEAR VEHICLES.

Posted

I had this identical issue in my '06 C4S. Original issue - I heard a clicking sound at low revs, valve tensioner (chain tensioner) froze. They replaced it, one month later I was back. FOund this issue, fixed it, replaced the tensioner and ever since the engine has been perfect.

This sounded unusual as I may have been the only one they heard of at the time - Fall of '06.

Posted
All, after much anxiety about this issue, I have collected all the facts from my local Porsche dealer. Here are the facts.

Bulletin Notice Number W733 issued on May 25, 2007

"This is to inform you of a voluntary Workshop Campaign on certain 2007 model year BoxsterS/Cayman S, 911 Carrera/S and 911 Carrera 4/4S vehicles. There is the possibility that some engines were manufactured which may lack an oil supply bore for the chain tensioner on the cylinder head of cylinder bank 1-3 due to a production flaw. As a result, the chain can jump out of place in certain operating states and can cause engine damage. To remedy the situation:

1) Check matching number on cylinder head of cylinder bank 1-3.

2) Check that the cylinder head of cylinder bank 1-3 has the required oil supply bore for the chain tensioner.

3) Replace cylinder head of cylinder bank 1-3.

A total of 112 US, Puerto Rican and Canadian vehicles fall within the scope of this Workshop Campaign. Very Important! Use the VIN range below as a general guideline. The VIN can be checked in the WWS for confirmation of an open workshop campaign (Also see PIWIS VIN information). Refer to Attachment A to determine if a particular vehicle is eligible for this workshop campaign. Also, the VIN can be checked via the VRU (Voice Response System) for any open listing."

THIS ONLY IMPACTS 2007 YEAR VEHICLES.

Pretty much what I summed up a few posts above...

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