Thread: isuzu newbie - insulation? oil choice? tips? etc

the guy at whitworths marine didn't think their fire retardant sound foam would handle the heat - however my exhaust runs close to the firewall having come off an after market turbo mounted at the back of the engine - you may have more space - anyway, i'd be interested to hear how yours goes, ie if it stays stuck, delaminates or melts - what are you going to stick it on with?

not having driven the car much yet i hadn't really noticed the noise, but it sounds like a bit of an issue with so many people soundproofing their landy's.
Maybe i could put a thin layer of foil faced EVA foam on my firewall and then cover it with the heat insulation (if they're compatible) near the exhaust. And slightly thicker foam on its own over the rest of the firewall where its not so hot. I hadn't been planning to go all the way out to the sides (across the footwell, under the aircon, around the brake/clutch bits, etc), but it sounds like doing the extra bit would help reduce noise

i spoke with tru-fit about their firewall shields, they reckon the one on their website wouldn't be suitable for my application but that they have a different version (not on their site yet) - one inch thick and able to cope with the temperature - but it has to be screwed/clipped on (sounds like a hassel to me) - anyway, i only have 1" space so it would be pretty much touching my exhaust pipe at one point which seems a bit dubious

although there's loads of stuff to do to this car, at least there aren't any unfilled holes in my firewall, will deal with door seals etc, etc, etc, once its driveable

cheers, Lis

You can lag your dump pipe with header wrap to dramatically reduce the heat soak into the firewall, engine bay and floor.

Best to use the silica based stuff, I wrapped my 300Tdi all the way to the t/case, made massive difference to heat soak around the trans tunnel in summer and dropped a small amount of noise too. Thermo-tec is a well known brand.

Originally Posted by rick130

You can lag your dump pipe with header wrap to dramatically reduce the heat soak into the firewall, engine bay and floor.

Best to use the silica based stuff, I wrapped my 300Tdi all the way to the t/case, made massive difference to heat soak around the trans tunnel in summer and dropped a small amount of noise too. Thermo-tec is a well known brand.

That's a fantastic idea. I've got some whitworths stuff too but was a little unsure about the exhaust heat.