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Old 07-15-2011, 02:22 PM   #126
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The smallest blanket would work, I can help you out with that.

You could do tape on the hood but it only reflects, it doesn't absorb. So you don't want to reflect heat back on certain things.
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Old 09-29-2011, 08:07 PM   #127
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Quote:
Originally Posted by oguitar View Post
I truly believe that heat is a modified cars enemy so keep posting your efforts to fight it.
What about stock cars? I would imagine they would also benefit from less heat.
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Old 09-29-2011, 11:42 PM   #128
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Yes even stock cars suffer from heat soak. Every one who is concerned about performance needs to fight the heat. Heat is energy and any heat that is not controlled is lost energy.
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Old 09-30-2011, 12:33 PM   #129
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Quote:
Originally Posted by STi__G View Post
I posted this on IWSTI. This simple mod should help the GR guys with their underhood temps. The stock configuration does nothing to get rid of heat. You wonder why Subaru even put a vent there.









I haven't taken any measurements but I'm convinced its reducing under hood temps just by a the amount heat that comes out of there. When the fan is running I can actually hear the air coming out. Whether this mod does anything beneficial or not is still up for debate but it only took 15 minutes and a holesaw to do.
Thanks for pointing out that this was not functional I had no idea that was the case. Does the part you drilled look like it might be load bearing? I'm also thinking of drilling out a bunch of smaller holes instead of few larger ones but not sure if that would help with anything or if it would matter at all...
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Old 09-30-2011, 12:59 PM   #130
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You could just cut the metal out between the larger holes and just make one long oblong vent, that would be ideal.

We did a few more things to help with engine bay heat, we'll get some pics and update our post shortly
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Old 09-30-2011, 02:28 PM   #131
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Default Any cons to using a turbo blanket?

So just reading through this post I am getting a feeling that everyone is using turbo blankets with great results.

The pros seem to be obvious: better heat management, less heat under the hood, faster turbine gas velocity, etc...

But it leaves one big question in my mind. Are there any cons to using one? Will it shorten turbine life span? What about engine bay fires? Burn engine oil more? Anything???

Thanks for all the help!
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Old 10-03-2011, 12:22 PM   #132
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Some people think it will shorten turbo life by keeping the turbo running hotter.

I haven't read any definitive research on it, and realistically the average person doesn't need to worry about this.

I'd rather personally have the benefits of everything else in the engine bay not receiving so much radiant heat.
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Old 10-07-2011, 02:07 AM   #133
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Quote:
Originally Posted by Circuit Motorsports
You could just cut the metal out between the larger holes and just make one long oblong vent, that would be ideal.

We did a few more things to help with engine bay heat, we'll get some pics and update our post shortly
Could that make the chassis less rigid? I'm wondering if those fenders are at all load bearing?
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Old 10-07-2011, 02:16 AM   #134
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Has anyone tried lining the inside of a turbo shield with DEI aluminum or gold tape or an equivalent heat reflective material? I wonder if it would be effective at reflecting some of that radiant heat from the turbo away from the IC. It probably won't be as good as a turbo blanket but could offer an alternative for people that are not comfortable with a blanket. I personally feel like my turbo needs a little breathing room.
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Old 10-07-2011, 10:28 AM   #135
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I have actually seen several pictures and threads where people have lined the underside of the heat shield with the gold tape. Go for it!
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Old 10-07-2011, 12:38 PM   #136
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Yeah the Gold Tape would help I'm sure.
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Old 10-07-2011, 02:12 PM   #137
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Quote:
Originally Posted by bdj238
I have actually seen several pictures and threads where people have lined the underside of the heat shield with the gold tape. Go for it!
Did they say anything about it helping or otherwise?
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Old 10-10-2011, 01:33 PM   #138
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It will help reflect heat down and away from the heat shield, instead of the shield reflecting what little it naturally would and then absorbing heat and radiating out.
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Old 10-10-2011, 03:47 PM   #139
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How hot can the gold tape get before things start melting or burning? Is the adhesive backing on it just as tough as the material itself?

I imagine the glue starts breaking down sooner than the tape so it might separate. Perhaps increasing risk of underhood fire? If I had a turbo blanket I would leave it at that without the lining.

To reduce underhood heat I'd suggest wrapping the cast iron uppipe and headers. Both retain heat in the piping to keep precious exhaust velocity higher and prevent heat leaking out.
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Old 10-10-2011, 03:58 PM   #140
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As for drilling out holes from the inner fender, I've pulled out the rubber bumper thing Subaru thought was a good idea to leave BLOCKING A VENT Didn't want to swiss cheese it without additional fender bracing.

Not sure if it helped but you can feel hot air leaving the vent after driving and still for a while while the car cools down.
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Old 10-10-2011, 04:08 PM   #141
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Quote:
Originally Posted by 0BlueSTi4 View Post
Thanks for pointing out that this was not functional I had no idea that was the case. Does the part you drilled look like it might be load bearing? I'm also thinking of drilling out a bunch of smaller holes instead of few larger ones but not sure if that would help with anything or if it would matter at all...
The STI does indeed have the holes there and air does come out of them, baaarely. However, according to this site http://www.cars101.com/subaru/impreza/wrxsti2011.html
the wrx fenders seem to be just for show. If you search for "heat vent" on the page, it shows it as standard for the sti and na for the wrx.
Wondering whether that is just a typo, carried over from the 2010, though.
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Old 10-10-2011, 05:46 PM   #142
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Quote:
Originally Posted by imma_stocker View Post
How hot can the gold tape get before things start melting or burning? Is the adhesive backing on it just as tough as the material itself?

I imagine the glue starts breaking down sooner than the tape so it might separate. Perhaps increasing risk of underhood fire? If I had a turbo blanket I would leave it at that without the lining.

To reduce underhood heat I'd suggest wrapping the cast iron uppipe and headers. Both retain heat in the piping to keep precious exhaust velocity higher and prevent heat leaking out.
That might answer part of it for you, though I cant comment on the longevity of the adhesive. You didn't mean wrap the header and uppipe in the tape did you? Thats not what the tape is for as CM mentioned at the top, its for reflecting heat not retaining it. Disregard if thats not how you meant it
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Old 10-10-2011, 08:29 PM   #143
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Quote:
Originally Posted by imma_stocker View Post
As for drilling out holes from the inner fender, I've pulled out the rubber bumper thing Subaru thought was a good idea to leave BLOCKING A VENT Didn't want to swiss cheese it without additional fender bracing.

Not sure if it helped but you can feel hot air leaving the vent after driving and still for a while while the car cools down.
+1, I did the same thing... How stupid of Subaru to put in a vent and then put in some rubber to seal it and stop all airflow... All for show nothing for go in this case...
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Old 10-11-2011, 02:31 AM   #144
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Quote:
Originally Posted by 2011OBPWRX

The STI does indeed have the holes there and air does come out of them, baaarely. However, according to this site http://www.cars101.com/subaru/impreza/wrxsti2011.html
the wrx fenders seem to be just for show. If you search for "heat vent" on the page, it shows it as standard for the sti and na for the wrx.
Wondering whether that is just a typo, carried over from the 2010, though.
I think this site is wrong. From what I read it seems that some WRXs and STIs have it and some don't. And there doesn't appear to be a common pattern like color or region. BTW, my 2011 WRX hatch in white had rubber flaps blocking the airflow that I removed.
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Old 10-13-2011, 01:24 PM   #145
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They do it so people don't complain when they driver through a muddy puddle and they get dirt coming out of the vent all over their new car.

At least they leave it for the enthusiast to take off if they want
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Old 10-26-2011, 12:54 PM   #146
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Quote:
Originally Posted by imma_stocker View Post
How hot can the gold tape get before things start melting or burning? Is the adhesive backing on it just as tough as the material itself?

I imagine the glue starts breaking down sooner than the tape so it might separate. Perhaps increasing risk of underhood fire? If I had a turbo blanket I would leave it at that without the lining.
I've had the gold material since befroe DEI started distributing it, several years now, inside my stock heat shield on my '93 turbo legacy. I have a VF12 (16g sized) turbo running 13-15psi. I've probably got 25kmi and almost 3yrs on this setup. I had the heat shield off the other day and found the gold tape in perfect condition with NO peeling at all.

I've also had Ti wrapped UP/DP, covered parts of the intake piping and resonance chambers with the gold foil, and used the heat reflective/insulated sleeves on my AWIC fluid lines.

Everything helps!
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Old 10-31-2011, 11:29 AM   #147
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Yeah the Gold Foil is good stuff, for sure.
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Old 11-02-2011, 01:06 PM   #148
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Mid-week SEMA Bump!

Don't forget to visit our website and use our special Coupon code this week -sema2011

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Old 11-03-2011, 01:10 PM   #149
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Mid-week SEMA Bump!

Don't forget to visit our website and use our special Coupon code this week -sema2011

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Old 01-19-2012, 12:09 PM   #150
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I found this thread very useful! bump for you.

75% of the reason i'm sticking with a TMIC setup, is to keep the oem front bumper beam. Last thing I need to deal with is the insurance guy asking me why I removed "safety" devices from my vehicle.
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