purpose of bonnet liner
#1
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I'm thinking of jazzing up the inside of the engine compartment on my XJS V12. It comes to no surprise that the stuff lining the inside of the hood isn't looking to good after 25 years.
In thinking about replacing it, it makes me wonder what the purpose of the lining is. I'm sure it's not to help keep the engine warm :-), so is it there to just help quiet the engine?
What is it made of?
If I just removed it, would there be adverse results other than a noise increase?
Thanks,
John
1987 XJS V12, 62,000 miles
In thinking about replacing it, it makes me wonder what the purpose of the lining is. I'm sure it's not to help keep the engine warm :-), so is it there to just help quiet the engine?
What is it made of?
If I just removed it, would there be adverse results other than a noise increase?
Thanks,
John
1987 XJS V12, 62,000 miles
#2
#3
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It is used to keep the paint from getting heat damaged.
I bought mine from Aircraft firewall material hood liner insulation pad for Mustang, Corvette, Jaguar, many other cars: ORDER YOUR HOODLINER HERE!!
I bought mine from Aircraft firewall material hood liner insulation pad for Mustang, Corvette, Jaguar, many other cars: ORDER YOUR HOODLINER HERE!!
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JimC64 (10-22-2012)
#4
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#8
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I would recommend the product in the eBay listing.
You don't want to replace the bonnet liner with the original product. It's junk. It started to sag and would cut into my cruise control bellows over time...
I've been thrilled with the product in that listing, just make sure you buy the adhesive he specifies. (available at Home Depot, not Lowe's)
You don't want to replace the bonnet liner with the original product. It's junk. It started to sag and would cut into my cruise control bellows over time...
I've been thrilled with the product in that listing, just make sure you buy the adhesive he specifies. (available at Home Depot, not Lowe's)
#9
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I have the one Greg mentioned.....
![](https://www.jaguarforums.com/forum/members/sarc-4188-albums-posts-1216-picture-2012-06-03-10-08-56-948-13276.jpg)
I'm really happy with it. I painted the various metal fixture pieces red originally but it looked cheesy, so I repainted them flat black. Looks better now I think.
I noticed when I had my original one off the car it was a bit noisier in the cabin, so as well as the hood paint protection I imagine the liner was also supposed to keep the engine noise down
![](https://www.jaguarforums.com/forum/members/sarc-4188-albums-posts-1216-picture-2012-06-03-10-08-56-948-13276.jpg)
I'm really happy with it. I painted the various metal fixture pieces red originally but it looked cheesy, so I repainted them flat black. Looks better now I think.
I noticed when I had my original one off the car it was a bit noisier in the cabin, so as well as the hood paint protection I imagine the liner was also supposed to keep the engine noise down
#12
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Yes, but it's only a 2 beer job :-)
I really, really wanted to do it without taking the hood off, but in the end I gave in. The hood is only held on by 4 bolts and the gas struts. On my 92 I had to remove the front grille (5 screws) to get to the bolts. Easy, it's just awkward and heavy.
Once it was off, I put a soft beach towel down on top of my hot tub cover then placed the hood with the inside side facing up. Because of the shape of the hood I could easily revolve the hood round as I worked. The added benefit was the hood got polished while I worked :-)
I drilled out the rivets on the 4 metal tabs that are on the edges of the hood. (The plaques with the vacuum diagrams on them, etc) This made it easier to get the hood liner in place. I riveted all the panels back on when I was finished. All in the job probably took me 3~4 hours work (plus the drying time of 24 hours)
I really, really wanted to do it without taking the hood off, but in the end I gave in. The hood is only held on by 4 bolts and the gas struts. On my 92 I had to remove the front grille (5 screws) to get to the bolts. Easy, it's just awkward and heavy.
Once it was off, I put a soft beach towel down on top of my hot tub cover then placed the hood with the inside side facing up. Because of the shape of the hood I could easily revolve the hood round as I worked. The added benefit was the hood got polished while I worked :-)
I drilled out the rivets on the 4 metal tabs that are on the edges of the hood. (The plaques with the vacuum diagrams on them, etc) This made it easier to get the hood liner in place. I riveted all the panels back on when I was finished. All in the job probably took me 3~4 hours work (plus the drying time of 24 hours)
#15
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Ok, got the bonnet off and all the old lining off...now I feel the need to clean up the inside of it and paint it. If i clean it up with degreaser really well and let it dry, is there a reason to prime it (I'm talking about the parts that won't be covered by the new liner) before painting it?
Thanks!
Thanks!
#17
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OK, I was under the impression you were wanting to paint it! Clean it up with a good degreaser of your choice - I use either Simple Green or the Orange Citrus ZEP from Home Depot. Since you have to go there to get the 3M #80 spray adhesive you might as well get some of that orange ZEP. Spray it all over the underhood, if you have a soft, gentle bristle brush you can use it to "scrub" it and either use a rag or paper towel to wipe it up or prop it up against a tree or the side of the garage and hose it down after you've scrubbed it. It WILL come clean! Then follow with the instructions - I scuff lightly with a fine grit sandpaper or sanding sponge so that the adhesive has something to "bite" onto.
#19
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OK, I was under the impression you were wanting to paint it! Clean it up with a good degreaser of your choice - I use either Simple Green or the Orange Citrus ZEP from Home Depot. Since you have to go there to get the 3M #80 spray adhesive you might as well get some of that orange ZEP. Spray it all over the underhood, if you have a soft, gentle bristle brush you can use it to "scrub" it and either use a rag or paper towel to wipe it up or prop it up against a tree or the side of the garage and hose it down after you've scrubbed it. It WILL come clean! Then follow with the instructions - I scuff lightly with a fine grit sandpaper or sanding sponge so that the adhesive has something to "bite" onto.
#20
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What I'm going to paint is that part of the inside of the bonnet not covered by the hoodliner. Since I've got it off, might as well do the job right. It'd be a shame to open the bonnet up with the new hoodliner contrasting against the greasy, faded 25 year old paint with rust spots on the rest of the bonnet!
I've got it as clean as it's going to get without it going to a professions (which it's not...no cash for that), so now I need to come up with some "nimbus white" spray paint. I know it won't exactly match the outside of the car, but it'll be close enough. I see that Automotive Touchup, Spray Paint | Aerosol Touch Up | AutomotiveTouchup | 888-710-5192, has it for about $20 a can.
Should I prime it first, or just make sure it's as clean as I can get it and paint over what's there?
Thanks!
John
I've got it as clean as it's going to get without it going to a professions (which it's not...no cash for that), so now I need to come up with some "nimbus white" spray paint. I know it won't exactly match the outside of the car, but it'll be close enough. I see that Automotive Touchup, Spray Paint | Aerosol Touch Up | AutomotiveTouchup | 888-710-5192, has it for about $20 a can.
Should I prime it first, or just make sure it's as clean as I can get it and paint over what's there?
Thanks!
John