Defender under bonnet soundproofing

[bcj]

Just had some hail damage repaired on 95defender but after under bonnet sound proofing was removed and refitted it's started to fall apart in several places.Does anyone know if replacements are available and how much ? Don't really think it does much anyway-might just toss it.

[hoadie72]

I believe Clarke Rubber sell some aftermarket stuff.

Apparently airfilter foam is also good

ufc.com.au - Reticulated Polyester (http://ufc.com.au/index.php?option=com_content&task=view&id=38&Itemid=56)

[Jock The Rock]

In Tassie I got something similar from Thomas Parker Rare Spares. For $60 I got a big sheet of under bonnet soundproofing. It has a sticky underside and you just cut out the shape you want and stick it on.

It worked pretty well sorry I would post a pic but don't have that Defender any more :(

[long stroke]

We used the stuff from clarke rubber, seems to do the job fine and hasn't fallen off yet:)

[cewilson]

Trust me - it makes a big difference. The more insulation you can get - the more you can hear and the less you have to turn up the radio. BUT more importantly, the less heat that will be transferred into the cabin, especially when off-road.

[rrturboD]

I replaced the original stuff under my RR bonnet with

Tru-Fit Carpets - Moulded Automotive Car Carpets for over 30 Years and 700 models (http://www.tru-fitcarpets.com.au/underbonnet.htm)

It made a REALLY big difference, and after 2 years is still there. Needs care to fit as the glued back really sticks well, so has to be positioned carefully.

[Offender90]

I'd use something like Pyrotek Sorberflex 4kg/sqm sandwiched loaded vinyl with 50mm foam under the bonnet. This is tried and tested, and is designed to reduce noise in industrial, automotive and boating applications. I'd definately go with 50mm foam (especially as you have a diesel), to give decent absorption of noise at low frequencies. Brochure attached.

Cheers

Bojan

[scarry]

Do all the Puma's have no soundproofing under the bonnet,does anyone know?
My sons has none.

Maybe a combination of cost cutting & a quieter engine...

[cewilson]

I replaced the original stuff under my RR bonnet with

Tru-Fit Carpets - Moulded Automotive Car Carpets for over 30 Years and 700 models (http://www.tru-fitcarpets.com.au/underbonnet.htm)

It made a REALLY big difference, and after 2 years is still there. Needs care to fit as the glued back really sticks well, so has to be positioned carefully.


Do you think that stuff would work on the inside of the cabin and doors as well? Or use other stuff?

One of the things I've hated about insulation is the price of it. I'd love to do it for the benefits it gives, but the price is hard to justify - especially when it means going without a camping trip or three.

Cheers
Chris

[spudboy]

I'd use something like Pyrotek Sorberflex 4kg/sqm sandwiched loaded vinyl with 50mm foam under the bonnet. This is tried and tested, and is designed to reduce noise in industrial, automotive and boating applications. I'd definately go with 50mm foam (especially as you have a diesel), to give decent absorption of noise at low frequencies. Brochure attached.

Cheers

Bojan


Interesting brochure link. The specs say it's usable temperature range is -20 degrees to +100 degrees, which you'd think might rule it out for underbonnet use, but underbonnet usage is specifically mentioned in the brochure......

How hot does it get underbonnet? I'd have thought closer to 150 degrees than 100.

[isuzu110]

How hot does it get underbonnet? I'd have thought closer to 150 degrees than 100.

Wouldn't the water boil out of your windscreen washer bottle if it was that hot under the bonnet ?

[Jock The Rock]

I reckon your right there is no way it could get that hot. I have a TM-2 on the block of my Tdi and it only gets up to 90 degrees max. I guess near the turbo and exhaust manifold it might get a bit warm but I wouldn't have thought 150

[spudboy]

Wouldn't the water boil out of your windscreen washer bottle if it was that hot under the bonnet ?

Oh yeah - fair point! I was more thinking of the bonnet area just above the head/turbo where the soundproofing would be stuck on.

I could easily check, as I have a digital pyrometer for checking grape temperatures prior to harvest.

[Offender90]

Oh yeah - fair point! I was more thinking of the bonnet area just above the head/turbo where the soundproofing would be stuck on.

I could easily check, as I have a digital pyrometer for checking grape temperatures prior to harvest.

I would imagine that with a turbo being < 10cms away from the insulation, you would have to place a heat shield on both the turbine, and exhaust manifold. If EGTs get to ~650*C, The manifold will also be at a temperature close to that, so the radiant heat from the exhaust turbine / manifold would degrade the vinyl over time. Should be fine with a heat shield on the turbine manifold however, so long as the insulation is not touching it.

The operating range is recommended to ensure longevity of the product, however, the actual melting temperature of this particular vinyl is >150*C (MSDS attached)

I'd be keen to find out what temperature it does get to, as I'm planning to install it on mine when I get around to it.

Cheers

Bojan

[Sleepy]

The more insulation you can get - the more you can hear and the less you have to turn up the radio.

I FOUND THE BEST METHOD IS TO BUY A SERIES 3 DIESEL...THE DEFENDER IS LOVELY AND QUIET NOW....(Sorry, am I yelling again?:angel:)


..I have a TM-2 on the block of my Tdi and it only gets up to 90 degrees max. ...I wouldn't have thought 150 Especially in Tassie;)

[Jock The Rock]

Especially in Tassie;)

Haha :p

Thats in summer

Lately is been running at about 80 - 82 degrees :cool: