Jan 202013
 

Several people had mentioned issues with heat soak due in the footwells due to the proximity of the exhaust. I was interested in avoiding this because I’ve had the same issue in my Elise while on long continental drives. I also remembered an article in one of the Jaguar magazine years back recommending lining the transmission tunnel with a reflective heat covering to reduce the heat coming into the cabin.

My main concern was to rebuild the car and then regret not fitting a reflective heat shield as it would be far harder to change my mind later on. Therefore, as a precautionary measure, I decided it was best to line the transmission tunnel now rather than later – probably overkill but hey ho.

After a little research into reducing exhaust heat, I went for a product from Zircotec which seemed to fit the bill. Their heat shield material comes in sheets and in three different thicknesses. The thinnest sheet should be sufficient as additional heat insulation was also being installed within the cabin. I’m glad I didn’t go for the next thickness up as I subsequently used the middle thickness Zircotec sheet to make a replacement exhaust heat shield. It would have been a little too rigid to mould to the curves of the transmission tunnel.

Paper templates were made to determine the smallest size of sheet needed (it's quite expensive!) Four pieces were required: two for the front footwell area, two for the transmission tunnel around the gearbox

Paper templates were made up to cover the transmission tunnel from the front of the footwells back to where the transmission tunnel becomes enclosed, near the handbrake. The templates could then used to determine the size of Zircotec sheet required and then to cut out once it arrived.

The installation was really helped by making accurate templates to cut out the Zircotec sheets rather than try to re-shape in-situ. I ditched the original paper ones as they were too flimsy. In the end I used the clear sticky-backed plastic sheet that was often used to cover my school books of old.

Next is the installation of the Koolmat cabin insulation ….