Yes, I have this set up... I will have a look under all the cars that MECUK have at Blenheim Palace on Sunday... I may be being concerned about nothing. I have had the car for a couple of years, but it has only been on the road fro a few months.
Hello Colin,
As Jon has described, the Murena has air tunnels under the boot floor so as the car is driven along the hot air is drawn out through these. This large gap also provides heat insulation between the silencer underneath and the boot floor. In all the years I have had my car, the boot never gets anywhere near hot enough to catch fire. Yes it does get warm, but I suspect more of that comes from the air passing through those vent tunnels than from the silencer. The rear bulkhead of the engine compartment which is also the front wall of the boot will get warm from the proximity of the exhaust manifold but again it never gets that hot. If you are carrying luggage that needs to remain cool and it is small enough, put it in a bag you can put in the front over the spare wheel. If it is too large for there, then place it towards the rear of the boot and away from the bulkhead between the boot and engine compartment. (however, if you have night clothes in a suitcase for an overnight stay, then having them warmed as you travel could be an advantage!
)
I found that when I had the cast iron manifold it retained the heat more and the boot got slightly warmer but since having the four branch gas flowed manifold (with separate pipes) they cool easier and you can even wrap them with exhaust wrap which will further reduce the temperatures, so the boot will not be so hot.
Roy