Ford Focus ST Forum banner

1 - 20 of 42 Posts

·
Registered
Joined
·
2,190 Posts
Discussion Starter #1
Many of you know that the entire Rocket Science team has been hard at work developing a Thermal Protection Film Kit for the ST Air Box Cover. I freely admit to being smitten by the appearance. But...does it work. The principal is that metallic surfaces reflect long wave EM radiation and reduce heat transfer. In this case to our intake air.

It should be noted that the material used is a metallized polymer film. It is neither gold, nor is it a foil. But, I will stick with the common vernacular, and we'll call it Foil.

I performed a little experiment that shows how this works. I placed an infrared heat lamp over a stock Air Box and raised the temperature to just above 120 degrees F. One thermocouple lead was placed 1/4" above the top surface while a second was positioned 1/4" below the inside surface, with both being at the center of the Air Box Cover. The temperature was raised gradually over 30 minutes in each case, to allow the temperatures to reach equilibrium. Great care was taken to ensure that all the experimental parameters (temp, time, distances, positions, etc.) were the same for both samples.

The stock Air Box Cover, with an outside temperature of 120.9* F, showed an an inside temperature of 98.0* F, and a temperature differential of 22.9* F. The Air Box Cover that had the Thermal Protection Foil had an external temperature of 123.4*F, and showed an internal temperature of 82.7* F. A differential of 40.7* F.

In this particular case, the Thermal Protection Foil produced a significant 17.8* F reduction in temperature over stock.

I did a few other tests and noted that if heated more rapidly, there was an even larger differential. The Foil covered box showed differentials as high as 30.4*F when the temperature was raised to ~125* F in 6 minutes.

I hope you find this information interesting and useful. JP
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #3
Thanks Wis, for the timely assistance. Folks can just zoom for the temp readings. JP
 

·
Registered
Joined
·
1,442 Posts
Many of you know that the entire Rocket Science team has been hard at work developing a Thermal Protection Film Kit for the ST Air Box Cover. I freely admit to being smitten by the appearance. But...does it work. The principal is that metallic surfaces reflect long wave EM radiation and reduce heat transfer. In this case to our intake air. It should be noted that the material used is a metallized polymer film. It is neither gold, nor is it a foil. But, I will stick with the common vernacular, and we'll call it Foil. I performed a little experiment that shows how this works. I placed an infrared heat lamp over a stock Air Box and raised the temperature to just above 120 degrees F. One thermocouple lead was placed 1/4" above the top surface while a second was positioned 1/4" below the inside surface, with both being at the center of the Air Box Cover. The temperature was raised gradually over 30 minutes in each case, to allow the temperatures to reach equilibrium. Great care was taken to ensure that all the experimental parameters (temp, time, distances, positions, etc.) were the same for both samples. The stock Air Box Cover, with an outside temperature of 120.9* F, showed an an inside temperature of 98.0* F, and a temperature differential of 22.9* F. The Air Box Cover that had the Thermal Protection Foil had an external temperature of 123.4*F, and showed an internal temperature of 82.7* F. A differential of 40.7* F. In this particular case, the Thermal Protection Foil produced a significant 17.8* F reduction in temperature over stock. I did a few other tests and noted that if heated more rapidly, there was an even larger differential. The Foil covered box showed differentials as high as 30.4*F when the temperature was raised to ~125* F in 6 minutes. I hope you find this information interesting and useful. JP
Good to see the data. This means I can buy one soon right?
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #8
Good to see the data. This means I can buy one soon right?
TS, gettin' close man, real close. The top two photos show a stock Air Box Cover. The lower two, with Thermal Protection Foil. JP
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #9 (Edited)
I know that stuff works in the scenario you set up, but how about with moving air, like it would see in an engine compartment with the air constantly coming in the intake.
Absolutely correct SD. This is just a demonstration of the effect. In combination with a Snorkel, there could be some significant gains. Plus, it's just like I like my women, inexpensive and pretty. JP

Ed., There'll be additional testing. JP
 

·
Super Moderator
Joined
·
5,730 Posts
Absolutely correct SD. This is just a demonstration of the effect. In combination with a Snorkel, there could be some significant gains. Plus, it's just like I like my women, inexpensive and pretty. JP
That stuff works great blocking heat in the scenario you set up, it is used in a lot of places for that purpose, it will be pretty interesting to see how it acts on a sealed (more or less) airbox with constantly refreshing air. Looking forward to some real world testing. I think we could see some interesting results!
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #12
@RocketST . this is getting good. looks like the numbers are proving themselves. any advance in live testing while on car? looking forward to final result...
Yeah Snail, "live testing" will be fun. I'd like to get one of these out to you, and you can play with it. I'd like to get about a half dozen out there, and see what kind of feedback comes in about fit and installation difficulty. @Kevin gave me some good information, and I made some changes based on his advice. His skills however, are way above average. Get those three meter probes ready. JP
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #13
@RocketST snorkels are going to come prewrapped as an option, correct?.......:wink:
You just love to make me work, don't you. I just got some design work from the Snorkel engineer in my mailbox. Haven't even had time to look at it. JP
 

·
Registered
Joined
·
179 Posts
Yeah Snail, "live testing" will be fun. I'd like to get one of these out to you, and you can play with it. I'd like to get about a half dozen out there, and see what kind of feedback comes in about fit and installation difficulty. @Kevin gave me some good information, and I made some changes based on his advice. His skills however, are way above average. Get those three meter probes ready. JP
just let me know when you need the info. more than happy to help in any way. lol wife said she would do install and look over the directions to make sure there kosher..... all i heard is "ill proof read the instructions":haha:
 

·
Registered
Joined
·
734 Posts
@RocketST - You and your trusty helpful team are doing some amazing work. I cannot wait to see the finalized product and even if my ST isnt here yet, I want to be one of the first to help support your hardwork!
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #16
Test

image-294130046.jpg
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #18 (Edited)
looks good but still there is a lot of open space in the front grill , make it bigger!!
Mouse, stay tuned. There's a lot more on the way. JP
 

·
Registered
Joined
·
734 Posts
Mouse, stay tuned. There's a lot more on the way. JP
So this is 100% just unpractical for our setups...but kinda goes with the "there's more room" concept. I have a 02 Grand AM GT and they have a similar setup that utilizes a lot more 'space.' I have zero clue if it was a gimmick or if it did indeedly do something to add extra air into the box, as it feeds from the fender well and from the front grille area.

Here is how the Pontiac looks. The Yellow part is the 'scoop.'

CAI.png

I love the Test photo above, and if anything maybe adding an extra few inches of 'flared scoop' length to the left side? Again this is something that just popped into my head. I know little about velocity, air delivery, or forced induction applications.

Making the inlet larger popped into my head so I figured id say something, even if im in the wrong. Thanks again, and no matter what...again another product I cant wait to have!
 

·
Registered
Joined
·
2,190 Posts
Discussion Starter #20
So this is 100% just unpractical for our setups...but kinda goes with the "there's more room" concept. I have a 02 Grand AM GT and they have a similar setup that utilizes a lot more 'space.' I have zero clue if it was a gimmick or if it did indeedly do something to add extra air into the box, as it feeds from the fender well and from the front grille area.

Here is how the Pontiac looks. The Yellow part is the 'scoop.'

View attachment 68012

I love the Test photo above, and if anything maybe adding an extra few inches of 'flared scoop' length to the left side? Again this is something that just popped into my head. I know little about velocity, air delivery, or forced induction applications.

Making the inlet larger popped into my head so I figured id say something, even if im in the wrong. Thanks again, and no matter what...again another product I cant wait to have!
Cookie, I love the feedback. And I've seen systems that utilize the principles you described. The FRPP snorkel flows quite well, but the BT guys would likely benefit from a system like that.

My goal on this project was to deliver the benefits of the FRPP snorkel, but at a more reasonable cost. Down the road, it would be fun to just go all out, with cost being no object. Thanks for the ideas and all your support. It's more than appreciated. I need it. JP
 
1 - 20 of 42 Posts
Top