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Under-hood insulation question?

2morrow

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So, what are you all doing to protect the cut edge of the hood insulation after installing a shaker or Race Louvers?
On the side lovers you’ll want to cut out the bottom support (it won’t be used anymore.

The center is a non issue
IMG_0173.jpeg

IMG_0174.jpeg
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NightmareMoon

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So, what are you all doing to protect the cut edge of the hood insulation after installing a shaker or Race Louvers?
Protect it from what? Its insulation, its edges aren't treated in any special way from factory. In my case its been years and its not like disintegrating or anything.
 

2morrow

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I'd like to see more information on how the fastened cover, shown above, is attached. The rubber seal and support ring are not flat surfaces so any additional details are appreciated.
It is riveted to the top of the airbox cover. Just unscrew the airbox top and remove to access the air filer element
 

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1) It would be pretty trivial to keep as much insulation as you want to keep (while removing the necessary area where the actual shaker goes.

2) Levittown sells a kit to convert a GT350 airbox (which I think the Mach 1 shares?) to a closed airbox with the GT500 airbox lid, so that's a good option too.
Do you have a part number for the kit you mentioned? I looked around on Levittown and was not able to zero in on it. Thanks.
 

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....so, slice off the rubber and rivet the clear cover to the flange? The base diameter of the OEM filter diameter interferes at that flange height but the Blue AirRaid (Ford Performance) filter works? Thanks.

Mach 1 air box lid underside.jpg


Mach 1 air box lid.webp
 

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2morrow

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....so, slice off the rubber and rivet the clear cover to the flange? The base diameter of the OEM filter diameter interferes at that flange height but the Blue AirRaid (Ford Performance) filter works? Thanks.

Mach 1 air box lid underside.jpg


Mach 1 air box lid.jpg
Yes, Yes and Yes! :like:
 

Ron

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The cover solution was made because a lot of track guys have vents on their cars & blocking water, as mentioned above, & avoiding suffocating the filter was the prime objective.
IMG_5782.jpeg

Your 'concept' is solid, but the reality is that (especially on the newer 2015+ Mustangs) hood vents are designed (in no particular order) to 1) remove hot air from engine bay; 2) increase radiator effectiveness (above) & 3) to (possibly) decrease lift. I have run my Mustang thru basic drive-thru car washes (where the pressure is high & direction varies w/the nozzle) & NEVER had an issue w/the water getting into my open air filter (Steeda, but pretty much what the original poster has). My 2018 has (roughly) 8x3 inch hood vents ... but the under-hood insulation is only cut (roughly) 3x1 inches. Makes ya kinda wonder if Ford didn't have an "oh, crap" moment when someone discovered they had a 'hole' in the hood & no corresponding 'hole' in the insulation!!! PS: Make sure that you drill a small hole in the bottom of the (after-market) air box to insure that any incoming (top &/or front) water does not build up under the filter. Not all aftermarket air boxes have this.
 

2morrow

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The cover solution was made because a lot of track guys have vents on their cars & blocking water, as mentioned above, & avoiding suffocating the filter was the prime objective.
IMG_5782.jpeg

Your 'concept' is solid, but the reality is that (especially on the newer 2015+ Mustangs) hood vents are designed (in no particular order) to 1) remove hot air from engine bay; 2) increase radiator effectiveness (above) & 3) to (possibly) decrease lift. I have run my Mustang thru basic drive-thru car washes (where the pressure is high & direction varies w/the nozzle) & NEVER had an issue w/the water getting into my open air filter (Steeda, but pretty much what the original poster has). My 2018 has (roughly) 8x3 inch hood vents ... but the under-hood insulation is only cut (roughly) 3x1 inches. Makes ya kinda wonder if Ford didn't have an "oh, crap" moment when someone discovered they had a 'hole' in the hood & no corresponding 'hole' in the insulation!!! PS: Make sure that you drill a small hole in the bottom of the (after-market) air box to insure that any incoming (top &/or front) water does not build up under the filter. Not all aftermarket air boxes have this.
If you do the hood vents…

There is a SIGNIFICANT increase in front end downforce with the hood vents.

I can confidently enter turn 10 at Sonoma at 100 mph.

However I also have a splitter that I modified and 305’s in the front 🤣
 

Ron

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There is a SIGNIFICANT increase in front end down-force w/the hood vents.

There is NO down-force w/hood vents, there is merely a reduction in lift. And, yes, there IS a difference.

However, I also have a splitter that I modified & 305’s in the front 🤣

NOW you have front end down-force!!!
 

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1) It would be pretty trivial to keep as much insulation as you want to keep (while removing the necessary area where the actual shaker goes.

2) Levittown sells a kit to convert a GT350 airbox (which I think the Mach 1 shares?) to a closed airbox with the GT500 airbox lid, so that's a good option too.
Thanks Nightmare, I will also look into the GT500 assssembly. I was thinking about cutting the insulation towards back and only leaving the front half to protect the vents from rain and filter housing area. I did that for my 2021 ROUSH stage 3 car when i installed the german SHROPP strut tower brace that everyone stated couldnt be done via blower. It worked. I gotta find pics for you guys.
 
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monte87

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So, what are you all doing to protect the cut edge of the hood insulation after installing a shaker or Race Louvers?
After cutting the hood insulation, i have utilized black spray paint on those open edges which hardens them and removes the sensitivuity to water. Gotta spray and paint by hand w a brush like 10X, I did same on my roush car w strut tower brace and it worked.
 

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After cutting the hood insulation, i have utilized black spray paint on those open edges which hardens them and removes the sensitivuity to water. Gotta spray and paint by hand w a brush like 10X, I did same on my roush car w strut tower brace and it worked.
Thank you, that was what I was looking for. I tried black duct tape and it is slowly removing itself from the heat. I had considered paint or some form of undercoating to close up the fiber where exposed. So far, barring any other good ideas, I think that will be the direction that I take.
 

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Protect it from what? Its insulation, its edges aren't treated in any special way from factory. In my case its been years and its not like disintegrating or anything.
Where it has been cut there is a lot of material that is not crushed and sealed like the edges of the original piece. Water will be absorbed here and the edge will continue to deteriorate and consequently look worse over time. Just looks unfinished and like it was done by a hack. I believe that I have it figured out and will report on the success or failure.
 
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Paul McWhiskey

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On the side lovers you’ll want to cut out the bottom support (it won’t be used anymore.

The center is a non issue
IMG_0173.jpeg

IMG_0174.jpeg
This all appears fine. However, I cut the factory blanket and reinstalled it. It’s the edges around where it is cut out that I am asking what others are doing to improve the appearance and stop water intrusion into the blanket.
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