blackwolf wrote:

The small one is a heat shield for the crankshaft position sensor, and as far as I am aware my 2007 Defender has never had one, it's certainly been missing for over 200,000 miles. I suggest therefore that it probably isn't essential.

There are people who run without the main turbo heat shield but I am not one of them, mine is still fitted. I think it does help to keep the temperature in the area down a bit (although a decat helps even more) and I see no reason to remove it. (The steering shaft is susceptible to failure if the rubber parts are overheated, the reason why the Puma shaft has a heat shield which the otherwise-identical TD5 shaft lacks). My turbo heat shield also rattled and is now held with a selection of exceptionally large mudguard washers. The bracket on the manifold it attaches to is another common source of rattles since the threads in the hole at the bulkhead end of the manifold tend to fail, and the bracket then rattles.

Overall it is not a good design.

Thank you Blackwolf, that is very useful information, much appreciated  My 90 Project : http://www.defender2.net/forum/topic52774.html

jst wrote:

i havent got a turbo heatshield on either of mine, 80k on both.