Cayman - Very Noisy Interior - Normal?
Discussion
Hi folks.
I've had a few Porsches over the years, mostly 987 Boxsters and a couple of 997s. I mention this because I thought I knew what to expect when I started looking around again. Just shows how wrong you can be.
This time, I rather fancied a Cayman. I picked up a lovely 987 Gen 1 Cayman S from OPC Silverstone and couldn't be happier with the preparation of the car and the care/service I received.
Until I got it out on the motorway, driving home....
There is a constant booming in the cabin at high speed, which seems to be generated from the back luggage area. It is a bit like opening one window at high speed on the motorway. You either close it quick or open another window to balance the air/sound in the cabin. I've sometimes noticed this with Ford hathchbacks when there is nothing in the boot and the parcel shelf is removed. Somehow the emptiness draws sound in from underneath, and makes for a nasty racket in the cabin.
I did test drive the car on local 'A' roads, but there were two of us in the car (me and salesman) so maybe that helped dampen the sound?
All windows were shut and the tailgate was secure, but it makes my ears ring and is very uncomfortable. This car isn't just a Boxster with a roof is it? It seems more like the difference between an Elise/Exige which is also very noisy and tiring to drive! Perhaps I need to put a load of blankets or pillows in the boot, but that seems a bit daft and a last resort really.
Can I ask the Cayman drivers out there, is this normal? If so I had better invest in earplugs. Has anyone else had this issue?
Thanks in advance.
I've had a few Porsches over the years, mostly 987 Boxsters and a couple of 997s. I mention this because I thought I knew what to expect when I started looking around again. Just shows how wrong you can be.
This time, I rather fancied a Cayman. I picked up a lovely 987 Gen 1 Cayman S from OPC Silverstone and couldn't be happier with the preparation of the car and the care/service I received.
Until I got it out on the motorway, driving home....
There is a constant booming in the cabin at high speed, which seems to be generated from the back luggage area. It is a bit like opening one window at high speed on the motorway. You either close it quick or open another window to balance the air/sound in the cabin. I've sometimes noticed this with Ford hathchbacks when there is nothing in the boot and the parcel shelf is removed. Somehow the emptiness draws sound in from underneath, and makes for a nasty racket in the cabin.
I did test drive the car on local 'A' roads, but there were two of us in the car (me and salesman) so maybe that helped dampen the sound?
All windows were shut and the tailgate was secure, but it makes my ears ring and is very uncomfortable. This car isn't just a Boxster with a roof is it? It seems more like the difference between an Elise/Exige which is also very noisy and tiring to drive! Perhaps I need to put a load of blankets or pillows in the boot, but that seems a bit daft and a last resort really.
Can I ask the Cayman drivers out there, is this normal? If so I had better invest in earplugs. Has anyone else had this issue?
Thanks in advance.
Edited by nelsls on Tuesday 25th June 21:42
Check the tread depth on the tyres....when I got into mine for the first time I was shocked by the drone. The Bridgestones were at 3mm and the near slick blocks were creating a roar. I put a set of new Eagle F1s on and the car was much quieter.....these tyres also get noisier as they get older, but not quite to the same level.
Redlake27 said:
Check the tread depth on the tyres....when I got into mine for the first time I was shocked by the drone. The Bridgestones were at 3mm and the near slick blocks were creating a roar. I put a set of new Eagle F1s on and the car was much quieter.....these tyres also get noisier as they get older, but not quite to the same level.
According to the 111point check, there is still 4-6mm left on the tyres.The dealer said bring it back, but that is another long journey (with ear-ache -literally) and no guarantee they will find anything wrong.
Bit of a process of elimination really, isn't it?
This is not what I wanted from this car.....
Try adjusting the little bump stops on the inside of the hatch at the latch end.
Basically, it's the rear hatch flexing in the middle. You need to wind the stops all the way in and try to get the rubber rests which are halfway along the hatch to rest on the body side. This will stop it flexing and generating the 'bassy boom' I think you are hearing.
Hope this helps. If not, I'll get some photos tomorrow.
Porsche did a recall some yrs ago IIRC.
Basically, it's the rear hatch flexing in the middle. You need to wind the stops all the way in and try to get the rubber rests which are halfway along the hatch to rest on the body side. This will stop it flexing and generating the 'bassy boom' I think you are hearing.
Hope this helps. If not, I'll get some photos tomorrow.
Porsche did a recall some yrs ago IIRC.
Something to try...when you hear the booming noise lower the windows maybe 1/2" if its a pressure build-up in the interior causing the booming this will release it. This will also prove the seals are all OK.
Talking of seals pop into your local BMW dealer and get yourself an aerosol can of this stuff - http://www.bmw.de/de/topics/service-zubehoer/origi... - this is a rubber seal conditioner which works brilliantly I use it on all my cars door and tailgate seals it works especially good on frameless door window seals.
Talking of seals pop into your local BMW dealer and get yourself an aerosol can of this stuff - http://www.bmw.de/de/topics/service-zubehoer/origi... - this is a rubber seal conditioner which works brilliantly I use it on all my cars door and tailgate seals it works especially good on frameless door window seals.
This is a design flaw of the 987 Cayman for those with particularly sensitive ears. I got used to it, but it drove me mad at first in my old Gen 2 Cayman.
Basically, when they added the roof to the original Boxster to create the Cayman, it caused unusual air pressure within the cabin.
To rectify this, the rear hatch has a balance weight in the rear hatch which bounces up and down on springs to cancel out the pressure.
I tried everything. In the end I found screwing in the rear hatch bumpers to make the hatch less tight worked. It seemed to let the air out!!!
Good luck!
Basically, when they added the roof to the original Boxster to create the Cayman, it caused unusual air pressure within the cabin.
To rectify this, the rear hatch has a balance weight in the rear hatch which bounces up and down on springs to cancel out the pressure.
I tried everything. In the end I found screwing in the rear hatch bumpers to make the hatch less tight worked. It seemed to let the air out!!!
Good luck!
smiffy555 said:
Try adjusting the little bump stops on the inside of the hatch at the latch end.
Basically, it's the rear hatch flexing in the middle. You need to wind the stops all the way in and try to get the rubber rests which are halfway along the hatch to rest on the body side. This will stop it flexing and generating the 'bassy boom' I think you are hearing.
Hope this helps. If not, I'll get some photos tomorrow.
Porsche did a recall some yrs ago IIRC.
+1Basically, it's the rear hatch flexing in the middle. You need to wind the stops all the way in and try to get the rubber rests which are halfway along the hatch to rest on the body side. This will stop it flexing and generating the 'bassy boom' I think you are hearing.
Hope this helps. If not, I'll get some photos tomorrow.
Porsche did a recall some yrs ago IIRC.
FrankCayman said:
This is a design flaw of the 987 Cayman for those with particularly sensitive ears. I got used to it, but it drove me mad at first in my old Gen 2 Cayman.
Basically, when they added the roof to the original Boxster to create the Cayman, it caused unusual air pressure within the cabin.
To rectify this, the rear hatch has a balance weight in the rear hatch which bounces up and down on springs to cancel out the pressure.
I tried everything. In the end I found screwing in the rear hatch bumpers to make the hatch less tight worked. It seemed to let the air out!!!
Good luck!
There is indeed a counter weight in the rear hatch. Removing this makes no difference at all, I've tried. Basically, when they added the roof to the original Boxster to create the Cayman, it caused unusual air pressure within the cabin.
To rectify this, the rear hatch has a balance weight in the rear hatch which bounces up and down on springs to cancel out the pressure.
I tried everything. In the end I found screwing in the rear hatch bumpers to make the hatch less tight worked. It seemed to let the air out!!!
Good luck!
Building up the thickness of the mid mounted rubber rests halfway along the hatch so it contacts the the rear quarter / bodysides is the cure, of screw in the rubber adjusters so the hatch closes tighter. You may also have to adjust the latch which is behind the carpet. Takes about 30mins to do.
smiffy555 said:
There is indeed a counter weight in the rear hatch. Removing this makes no difference at all, I've tried.
Building up the thickness of the mid mounted rubber rests halfway along the hatch so it contacts the the rear quarter / bodysides is the cure, of screw in the rubber adjusters so the hatch closes tighter. You may also have to adjust the latch which is behind the carpet. Takes about 30mins to do.
Thanks for your advice everyone. Building up the thickness of the mid mounted rubber rests halfway along the hatch so it contacts the the rear quarter / bodysides is the cure, of screw in the rubber adjusters so the hatch closes tighter. You may also have to adjust the latch which is behind the carpet. Takes about 30mins to do.
I'm inclined to return to the OPC that supplied my car. I paid a hefty premium for peace of mind, and everything should be covered under warranty.
Of course, I have to go on the motorway to get there - ironic really...
I might ask the chap outside digging up the road if I can borrow his ear safety headset!
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