Paul McWhiskey
Well-Known Member
- Joined
- Apr 20, 2022
- Threads
- 18
- Messages
- 539
- Reaction score
- 560
- Location
- The Down Side of the Hill
- First Name
- Paul
- Vehicle(s)
- 2017 Mustang GT Premium w/PP
- Thread starter
- #1
I have the FP PP2 installed on my car and have never been impressed with IAT since install. After noodling here and other places in the interweb I decided to make a few mods to it to see if I could lower IAT. Since the GT 350 airbox did not seal on the bottom of my hood and I was sure that was the source of all of the hot air I got a piece of pipe insulation and installed it over the rubber seal on the airbox. As you can see in the attached photo it made contact with the insulation on the underside of the hood in most places. But it still left spots where it did not seal. So, at those spots I added some sticky backed foam tape. I was quite surprised how much of a difference this made. From a cold engine and ambient temp at 69 degrees I took a trip of about 20 miles which entailed about 3 miles to the highway with 4 stop lights to the onramp and 16 miles at highway speed and about 1 mile from highway exit with two lights to my destination. IAT remained at 3 degrees above OAT indicated on the highway and only rose to about 7 degrees over OAT after exit of highway to my destination.
After about a 20-minute stop I started my return trip. With the engine and air inlet system now heat soaked IAT dropped from 102 degrees quite rapidly after start-up. Much faster than it ever did previously. On the highway back IAT stayed about 6 degrees over OAT and maintained very close to that after exit from highway to my home. Since the foam tape does not look all that nice on top of the pipe insulation, I am going to take it off and install on the inside of the insulation to see if that will provide a seal on the underside of the hood. I know that this is not the eye candy that many prefer, but I am only concerned with attempting to get lower IAT's.
Now, I believe that much of the heat is transmitted through the filter box and inlet duct. My question is, has anyone tried using Lizardskin thermal spray on the box and duct? I have seen many apply several different types of insulation that needs to be cut and glued or has adhesive backing but I think that it would be much easier to mask and spray and may also provide better coverage.
What are your thoughts?
After about a 20-minute stop I started my return trip. With the engine and air inlet system now heat soaked IAT dropped from 102 degrees quite rapidly after start-up. Much faster than it ever did previously. On the highway back IAT stayed about 6 degrees over OAT and maintained very close to that after exit from highway to my home. Since the foam tape does not look all that nice on top of the pipe insulation, I am going to take it off and install on the inside of the insulation to see if that will provide a seal on the underside of the hood. I know that this is not the eye candy that many prefer, but I am only concerned with attempting to get lower IAT's.
Now, I believe that much of the heat is transmitted through the filter box and inlet duct. My question is, has anyone tried using Lizardskin thermal spray on the box and duct? I have seen many apply several different types of insulation that needs to be cut and glued or has adhesive backing but I think that it would be much easier to mask and spray and may also provide better coverage.
What are your thoughts?
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