Fiberglass mat underhood

[jode]

Am I the only moron who still is running around with that big nasty, mud-filled, dusty, shedding fiberglass rug hanging on the bottom side of my hood? Does that thing serve a purpose? Should I leave it there? I think my engine compartment would look a lot better if it were gone....

[gp_frk]

mines gone

[Mike D]

Originally posted by jeep_freek:
mines goneSo is mine..but its a 63 Kjeep truck.....so who knows how long its been gone.....

230 Tornado(still runs) d20 and who the heck knows what the axles are!!!!

[Blackjack]

No Jode you're not the only one, mine is still there and looks nasty too. I'd like to put some of that foil looking stuff up there that reflects heat.

GFD

[billyrb]

It serves several purposes:

1. quiets road noise and engine noise through the hood.
2. insulates the hood, so that the hot temperatures didn't bake off the hood paint
3. reduce underhood temps, as the hood components then wouldn't get near as hot and re-reflect the heat back towards the intake.

It all depends on what you are using the rig for:
daily driver on road, hardly ever off road: get it.
occasional driver on road, lots off road: forget it. You'll spend twice as much time cleaning it repeatedly than you would offroading.

~ryan

[Ed Jack]

Mine's out, at the moment, but I still have it.

I have noticed that in the rain, with it out, my hood stays dry. I believe it's there to protect the paint (maybe?) from engine heat and to deaden noise.

The foil sounds like a good way to go. Perhaps even foil over fiberglass?

[jode]

Originally posted by billyrb:
occasional driver on road, lots off road: forget it. Hmmmm....good advice, but, I seem to fall in between the two extremes....daily driver that like to go offroad....

[billyrb]

well, here's a solution, albeit not a good one:
buy the shield, install it...then, get a big tarp, wrap the underside of the hood, all the way over the top of the hood, and secure with nylon webbing....then, when you finish offroading, remove the tarp, and voila! It's all clean!

hehehe.... ;)

~ryan

[Sitting Bull]

You can get nice looking (foil wrapped) hood insulation from summit. Nice looking, works good from what I've heard, but it very pricey. May be a good solution for your problem...

[AusTex 72Wag]

Like this stuff? It's on my list of stuff to buy, especially since there's practically NO PAINT on my hood! I'm making sure I get it installed before I get the FireMonkey repainted!

http://www.jcwhitney.com/productnoitem.jhtml?CATID=37015&BQ=jcw2

[Thomas DeBusk]

My mat's gone, and so is the paint on my hood. So THAT'S why water evaporates so quickly off my hood.

Thomas

[Arborman]

Try some general purpose spray adhesive to put some back up. Thats what I'm doin to protect my hood paint. As to what to replace it with, I'll go to the boneyard and find some thats in good shape probably off a lincoln or caddy, plentiful and thickly insulated. I don't think the Waggy'll mind a little "strange" at this point anyway.

[Sitting Bull]

Originally posted by AusTex 72Wag:
Like this stuff?http://www.jcwhitney.com/productnoitem.jhtml?CATID=37015&BQ=jcw2ROTFLMAO!!! Ya gotta love JCWhitney..."The same technology developed by NASA to protect its spacecrafts". Now that's just dam funny! I can see it now: an astronaut spraying the ship with contact adhesive to stick on the JCWhipme mat for re-entry into the earths atmosphere!!!

The summit stuff is a thick mat, and will probably mount and last much better than that stuff. I've had much better luck with them than JCW.

[Tad]

No mat, no paint burning, 1985 hood with Buick 350 under there.
mtn goat has some cool looking stuff insulating his, not sure where he got it (well, he told me but that was like last week).

[beater]

what mat? hehehe

[Damage, Inc.]

Ya' know, JC Whitney sells some Great Googley MoogleyGreat Googley MoogleyGreat Googley MoogleyGreat Googley MoogleyGreat Googley Moogley...but they *ALSO* sell RS9000 shocks...

What's *THAT* supposed to tell me?

[gp_frk]

What about durabak? Durable easy to clean and has insulating quality. Just a thought.

[Marc_01]

Here is what i got:

http://www.norfolkhosting.com/gw/hood/DSC00021.jpg

I still have paint on my hood, so i guess it works ok.

[gp_frk]

That dynamat is good stuff. Same thing they use when installing custom stereo equipment. Also used in some dirt track type racing I believe.

[tito]

Jode,

I've been known to pinch the #@*% out of a buffalo nickel, but here's what I did.

Went to Lowes/Home Depot and bought a $5 pack of 3/4" X 12" X 36" styrofoam sheets and a $4 can of spray adhesive. Scraped off the old mat/glue and cleaned off the dirt. Aligned and pressed a styro sheet against the inside of the hood to make indentations from the braces, etc. Then cut the sheet to fit flush against the hood. Sprayed the inside of the hood with the glue and pressed the sheet into place. Did this one sheet at a time until the inside of the hood is covered.

Benefits =
- no stringy pieces blowing around and looking ratty
- if it gets muddy, then hose it off
- keeps the heat off the hood paint
- deadens the engine/road noise
- cheap
- don't like when the styro get stained or cracked, it's cheap enough to replace
- freak people out when you pop the hood and it's bright white inside
- Easier to find than a boneyard mat big enough for a FSJ

The trick is getting the inside of the hood clean enough the glue is sticking to metal and not dirt.

Tito

[RSW]

I found heat shield insulation with foil on both sides at a local automotive upholstry shop. I scraped off the old stuff with a plastic Bondo applicator and used the pieces for templates to cut out the new parts. Then I used high-temp contact adhesive to install the new heat shield. Noise is reduced and the paint is in tact, even in the Arizona sun. It's also easier to keep clean and doesn't shed on me when I'm working under the hood. I used the same material to insulate my roof when I removed and recovered my headliner. It really keeps the interior temps down and provides a quieter ride.

RSW
'85 Grand Wagoneer
5" Skyjacker, RS9000's, 32" BFG KO's
Custom Extended Track Bars and Drive Shafts
Rebuilt 360, Edelbrock Performer Package,K&N
Optima Battery, Rebuilt 727 and NP229

[gp_frk]

no one wants to touch the durabak idea huh?
Oh well smile.gif

[ChickenTender]

I've got about 50extra square ft of durabak sitting in my gargage right now so I may touch that idea. ;)
My roommate is using it to build the castings for the fiber body of a Lamborghini.
Please don't ask!!! :( redface.gif

[Marvin Gates]

Home Depot, and most hardwares have a double sided (aluminum) insulation that is used for wrapping hot water heaters, the stuff is cheap and works great. With the aluminum on both sides it reflects heat and is easy to form around the floor tunnel. I took my carpet out and put it under, from the firewall to the back window in my J20. No more road noise or heat from underneath. I also put it under the carpet in the cargo area in my Wag and it made a world of difference on the road noise. Some of it comes with a fiberglass material in between the aluminum outer sides and some comes with plastic bubbles like the shipping stuff. I used the bubble stuff in my doors cause if it gets wet it won't hurt it, and it really stopped more road noise. I want it nice and quiet inside. MG :D If you use it, make sure you use the aluminum tape and not the regular duct tape. The aluminum tape stays where you put it, the regular duct tape will fall off as soon as it gets hot.

[ August 16, 2002, 07:48 AM: Message edited by: Marvin Gates ]

[gp_frk]

marvin,

How thick is this stuff?

[ChickenTender]

BTT
I'm wondering how thick it is also....

[gp_frk]

CT,

I talked to Marvin yesterday on IRC the foil stuff he bought was about 3/8 to 1/4" thick.

[gp_frk]

Here's what i wanna try and someone please stop me if this gets out of hand.

I was thinking...and that can be scary!
Durabak or Rhino line or wahtever you prefer the under side of the hood. Then inside the cab line form the fire wall to the floorand all the way back up behind the seat in my J-10 to the rear window. This should help with road noise and with the heat from the transmission. Oh yeah I also plan on lining the bed. :D

[jode]

While your at it...why dont you do the windows too? redface.gif

[gp_frk]

thought about it tongue.gif

[gp_frk]

actually thought about pullin a prok chop
but i dunno