Bonnet Insulation

[Alan Whitaker]

Hi All.
Was there ever a under bonnet insulation for the S, if not and you have done it , what did you use.

Alan

[GreenV8S]

My S2 had it from new and it was a PITA. I'm glad the V8S doesn't have it. I haven't had any problems with heat damage despite having a lot of heat under there, but there are various companies selling self adhesive under bonnet insulation if you want to add it.

[Jerseyjohn]

I am looking at this company.

http://www.textiletechnologies.co.uk/acoustic-heat...

[Alan Whitaker]

Have looked at some types on ebay, was thinking if there was one for the early S I would try get one,

Alan

[Alan Whitaker]

Steelshield looks good for the body where the manifolds sit

Alan

[GreenV8S]

Yes, you definitely want to protect the bodywork where it is close to the exhaust, especially around the headers, or the fibreglass will degrade and eventually go porous. I've seen various aftermarket brands used, usually self adhesive but often supplemented with rivets to stop the corners peeling - which obviously wouldn't be an option for an underbonnet heat shield. You thinking to protect the paintwork, or reduce the noise, or what?

[Alan Whitaker]

Just the bonnet looks a bit scruffy so was just thinking of making it look decent, going to the trimmers next week so I was going to ask if could do some sort of quilt design (depending on cost)

[glenrobbo]

Hi Alan,
My S1 has what appears to be original factory fitted underbonnet insulation, consisting of a semi-rigid moulded pressed grey mat with a fibrous middle layer and a metal mesh ( suppression screen? ) all sandwiched together and stuck to the underside of the clamshell.
I had a few times when it kept coming unstuck and jamming the throttle linkage, but eventually found that Gorilla Glue did the job a treat. No trouble since.

Alan 461 has gone minimalist and removed all of his underbonnet ( clamshell ) insulation and afaik has suffered no ill effects. But he hasn't got a 4.0 twin turbo lump in his S.

[greymrj]

Car Builder Solutions sell it.

I had the same kind of matt mentioned above on my S, it was also a pain and causing throttle problems. I removed it most of it. The bonnet hasnt suffered at all so far indeed the improved airflow between engine and bonnet may be good news!!

[keirangrogan]

As above it was fitted from the factory. When I bought my S2, I had a problem one day with erratic throttle. Turned out to be the Mat had dropped and was catching on the throttle mechanism. To solve I pulled it off and never bothered with it again.

Until I came to sell it 13 years later. I stuck it back on with Eco stick. Some chap travelled all the way from Oxford to Manchester to view the car. The throttle stuck. He didn't buy it.

Moral of the story == make sure your glue is heat proof.

[phillpot]

Some time ago I bought some sound deadening stuff from Noise Killers UK, after many failed attempts at sticking it to the under side of the bonnet (it was self adhesive but that didn't stick to the comparatively rough fibreglass finish)I gave up and it went in the bin!

thinking about it now some form of mechanical fixing is maybe the way to go

How about something like these glassed to the bonnet....


then some of these pushed into them, through the sound proofing sheet....



............ or just do without

[Alan Whitaker]

Good points and bad points, will have to re think this one

Alan

[zombeh]

There's not been any on mine in all the time I've owned it. Watching the steam coming off it on a morning like today is very relaxing whilst stuck in traffic

If I were to put something on it to keep the heat in I'd use zircoflex. I'm not sure why you'd want to keep the noise in or whether there's anything you could do that would make much of a difference without being extremely heavy.

[Alan Whitaker]

Under bonnet just looks scruffy, wanting to bling up a bit, don't want to open the bonnet and it lets the rest of the car down. Found a product called Lizskin ceramic spray sound and heat insulation, don't have a UK stockist that I can find but Eastwood sells it so will give Frost a ring to see if they have some.