New Under-Hood Insulation - Page 2 - PeachParts Mercedes-Benz Forum

ykobayashi · #16 03-03-2020, 10:03 PM

I’ve used that stuff for years on my cars. It has not broken down for ten years. I’m way too cheap to buy a real hoodliner.

I wish I used a better glue than 3m spray on adhesive though. It falls down once a year and I have to spray on more glue.

On my w123 I didn’t have too much laying around the garage so I just put a 1’x2’ piece right above the turbo. That seems to be the spot that gets really hot. The guy who owned the car before me had no hoodliner and I can see the clear is a little messed up in that area. But it was a cheap paint job so the entire car looks dingy up close.

Ahhh...Lowe’s. You know, I bought mine by the foot on a 4’ wide roll at OSH. RIP OSH. It was a really good deal.

Skid Row Joe · #17 03-03-2020, 11:51 PM

Quote:

Originally Posted by SD Blue

I would like to know how well this holds up. My concern, due to the heat locally, was the underlying hexcell construction was made of plastic. However, it the mylar sufficiently reflects the heat, this may not be an issue.

I agree, the foam pad has to be replaced about every 2-3 years around here and much less if it ever absorbs diesel fuel.

A long time ago.....no, a very long time ago, 25+ years...….. I scraped off the OEM grey foam insulation from the inside of my '83 300SD's bonnet. I drove the car several hundreds of thousands of miles, post foam removal, and never had a paint issue on the bonnet, or anywhere else on the car for that matter.

I drove the SD in the Deep Southern States to Texas for many years in this condition. Dead of Summer included. I must conclude that engine heat doesn't bother the bonnet's top paint.

spock505 · #18 03-06-2020, 05:56 PM

Check the bulk head rubber seals with hood, otherwise it can lead to engine fumes entering via heater scoop on otherside.

This is for a 124 when I drive mine without hood insulation, if stationary with blower on it really wafts in.

It creates an indentation into the foam:

optimusprime · #19 03-07-2020, 07:42 AM

Gregory nice job there my friend .Something i need to address in the up coming weeks .But its hard to find the material over in uk in that size to do it all in one piece .

Skid Row Joe · #20 03-08-2020, 02:29 PM

Quote:

Originally Posted by spock505

Check the bulk head rubber seals with hood, otherwise it can lead to engine fumes entering via heater scoop on otherside.

This is for a 124 when I drive mine without hood insulation, if stationary with blower on it really wafts in.

It creates an indentation into the foam:

That's good to know. I didn't notice any fumes of any type though. Thanks!

dlssmith · #21 03-12-2020, 12:40 AM

The OEM hood pad like the one in a pic posted by Spock505 has a decent sound deadening effect. I really noticed the difference there after driving mine with the pad scraped off for a few days before I could install the new one.