Under Hood Sound Deadoning

[bkasl]

Noticed the latest video from the UK Sunbeam Channel on rotors and the car being worked on had aftermarket sound deadoning material under the hood.
Reminded me of a project I did back in the 70's and why I removed it. Any other owners have this added for sound/heat? Brand? How attached?
Thanks

 

[DanR]

Here is one style from the factory. I have a SIV GT with this type insulation and also made a duplicate frame for my Blue Boy V6

 

[bkasl]

Here is one style from the factory. I have a SIV GT with this type insulation and also made a duplicate frame for my Blue Boy V6

the wire grid holds it in place?

 

[DanR]

Yes, there is a wire frame to hold in the insulation. I had a mat made of fire retardant fabricate. Looks nice and adds some noise reduction.

 

[alpine_64]

Yes, there is a wire frame to hold in the insulation. I had a mat made of fire retardant fabricate. Looks nice and adds some noise reduction.

Iirc there were also some clips to hold the mesh frame.
Iirc there were 2 types of the GT sound insulation frame. One as pictured was for the batwimg filter. There was one with a smaller opening for the single solex as used on later s3GT and the SIVGT... Think i had photos of both somewhere.

 

[Tim R]

We use self adhesive foil backed foam under the bonnet (hood), it comes on a wide roll. We use self adhesive silent coat or Dynomat on the bulkhead, transmission tunnel (inside the car and outside) and also inside door skins and we apply the melting bitumen sheets for the floors. The cars are very mechanically quiet with no rattles, squeaks or knocks. The doors shut with a deep clunk and feel really high quality. Sometimes we ride in a 'normal' Alpine with minimal or no sound proofing and it sounds very different!
Tim R

 

[Barry]

I remember seeing a VERY nice S-IV (GT ???) with under-hood insulation at a British car show in Townsend, TN about 20+ years ago. The car was owned by a couple of elderly brothers and was a striking copper-ish color. The insulation was quilted and was held in place by a wire grid. According to the owners, the under-hood insulation was removed anytime the car was driven (apparently not much) to prevent oil streaks.

 

[DanR]

Here's a picture of my Blue Boy with the GT Insulation frame holding the blue fire retardant Insulation in place with the original clips prescribed for the task,

Also a picture of a GT wire frame.

 

[BEpine]

Dan, Where did you get the fire retardant insulation? I have a S3 GT with the wire frame. I'm needing to replace the original insulation.
Thanks,
Bob

 

[DanR]

Where did you the fire retardant Insulation

That was back in 2009.....a pontoon repair/upholstery shop. He went out of business a few years ago.

 

[alpine_64]

Dan, Where did you get the fire retardant insulation? I have a S3 GT with the wire frame. I'm needing to replace the original insulation.
Thanks,
Bob

Do you want a proper quilted uplosted panel for the bonnet.. Or you can buy fireproof self adhesive thick sound insulation foam at places like summit. You could use that and powder coat the retaining frame and fit infront it will look clean and level.

 

[BEpine]

Thanks, I'll check that out. I do have the original upholstered panel and it looks it age so looking to replace it.

 

[bkasl]

Those are great pics