muibubbles

iTrader: (36)

stupid idea or logical.. ceramic coating MICA?

Prometheus

iTrader: (2)

I'm thinking ceramics vary so much in quality, you'd have to know the exact properties of the ceramic media you would be coating with (that borders on sharing trade secrets)

instead of coating the mica, I was thinking if layering
mica using mica washers as spacer (to get the air spaceing needed for thermal isolation)

I wouldn't rely on adhesives, but rather fastners that can handle the radiant
heat from the turbine housing.

Would it serve better to have a fastener that quickly conducts heat and bleads if off, or a fastner that is more of an insulated nature.

Crush rivets?

I wonder why they have never casted a turbine housing out of mica?

no_more_rice

Ceramic coating with heat shielding should work very well
http://www.alibaba.com/product-gs/24...Composite.html

muibubbles

iTrader: (36)

bring this thread back!

ksu-chewie

iTrader: (14)

Just wondering if anyone has pictures of what they've done for the stock turbos.

MattGold

iTrader: (108)

Just wondering if there is any opinions about DEI's line of products:

Their newest material (coined 'Titanium', but no actul titanium from what I can see) is made from "pulverized lava rock and stranded into a fiber material". Not sure what that is/means. But they claim 1800F direct-2500F radiant protection.



Wrap:
http://www.designengineering.com/cat...-lr-technology

Turbo specific shields:
http://www.designengineering.com/cat...rbo-shield-kit

Snowblind113

I remember reading about Aerogel and its application in shielding of space suits and against the immense temperature changes it could handle. It is an amazing insulator

http://en.wikipedia.org/wiki/Aerogel#Properties

quick google search, found this case study http://www.aerogel.com/markets/Case_...Shield_web.pdf

twinsinside

iTrader: (34)

We need to get NASA to design us a LIM made from space shuttle tiles

SiH

Interesting, as I'm currently about to send some stuff off for ceramic coating, and was considering the exhaust housing of my 35r.

So, who's actually used an insulated (of some variety or another - be it turbo beany or ceramic coated) exhaust housing for an extended amount of time on a non journal bearing turbo such as a 35r?
I'm intersted to see real world results for reliability and longeivity

just startn

iTrader: (33)

http://www.etsschaefer.com/Commodity.html

this is the stuff i was talking about previously that i use

Gorilla RE

iTrader: (1)

You mean carbon fiber and ceramic? I don't think we need NASA's help...

muibubbles

iTrader: (36)

revive... can you weld mica?

twinsinside

iTrader: (34)

I will soon. My dp, manifold and all the heat shields are getting ceramic coated. Hopefully that will work well, look good, and prevent the heat shields from rusting out.

My car is a modest hp street car but still anything I can do to keep the heat where it belongs is a good goal to have I think.

muibubbles

iTrader: (36)

has any of the "single" guys thought of heatshielding around the dp essentially creating a "dp tunnel" heat shielding?

GMO-RX7

iTrader: (21)

I've seen it done on here

1FAASTFD3S

iTrader: (33)

I have my lim coated, a turbo blanket on my single, the exhaust manifold heat wrapped and the downpipe heat wrapped all the way to the cat/mid pipe. I figure the more of its wrapped the better off you are..

muibubbles

iTrader: (36)

any pics on the heat shielded dp tunnels?

Highboost242

iTrader: (7)

So I have been infatuated with keeping the heat from my exhaust isolated from my intake since one day I noticed something I was not cool with. I ran my car hard for about 10 minutes and let it idle for 5 minutes with the hood open then shut it down. Almost two hours later I came back to the car and to my surprise I couldn't keep my hand on the factory hot pipe coming out of the turbo's or the LIM. This was not acceptable to me so my first plan of action was to reduce the amount of turbos to 1.

I only just now found this thread (don't know how i missed it) but I had already decided to go with some of the suggestions that have been discussed here. I got my single turbo manifold ceramic coated, which looks amazing by the way. I will also have the downpipe and turbine side coated once my turbo arrives and my downpipe is fabbed up.

Quick story about ceramic coating: I was helping a friend work on his car and went to lean on the turbo. I put my hand about 1/2" away from the turbine side as a heat check and felt almost no radiant heat. Well when i put my hand on there I lost all of my fingerprints! The turbine housing might as well been on fire!! Ceramic really keeps the heat in, well worth the $$ if you ask me.

I have purchased the LIM shield available from Pettit, for 65$ its not worth trying to make my own.

I will be using a turbo blanket or shield as well, for a great inexpensive way to build a shield and save about 175$ check this awesome thread by Viking War Hammer:
https://www.rx7club.com/fabrication-250/how-build-turbo-heatshield-775713/

I also was considering running ducting to the turbo but after reading through this thread realized why that may not be a good idea. What about running it not to the turbo but to the LIM? I have seen pictures or RX7's with such a ducting but couldn't tell where they were supplying the cool air too...

HC, where can we get this MICA from?? I didn't see a supplier mentioned, if it is I apologize.

Here are some pics or the ceramic, thanks for the info guys, keep it coming!!


BEFORE:





AFTER:

Highboost242

iTrader: (7)

Pics of the Pettit LIM Shield:

Turbo Side


Manifold Side


Comes with a mounting tab and hardware

Howard Coleman

iTrader: (6)

mica sheet ultra high temp

http://www.mcmaster.com/#mica/=9ipezt

$64, cheap when you consider NO heat penetrates the backside.

very different than any other heat barrier.

while on the subject i would be cautious as to totally encapsulating the turbine housing unless you like buying multiple turbos... some heat needs to vent.

RX72NR

iTrader: (1)

Looks polished, is that cerma chrome? Had a friend who had something similar done with his lim, but looked dimpled not that smooth. Where did you get the coating done?

jkstill

iTrader: (11)

... and small oil leaks can saturate the blanket, leading to a fire.

Several FD's have caught fire this way, probably other cars too, but I only pay attention to FD's.

blue87

iTrader: (2)

Hey muibubbles here are a couple of pics of a downpipe tunnel heat shield I threw together. for the stock twins This was fabbed from some left over stainless stove pipe I had from a wood furnace install in my house.

I welded some standoffs under the shield and used stainless hose clamps to old the standoffs to the pipe so there is a good 1/4 to 1/2 inch even gap betweent he heat wrap and the shield.

The shield is very rough as it was just thrown together as a proof of concept, I wasn't sure how well it would work so I didn't want to spend too much time or money. I am most likely going single over the winter but I will take the time to make a nice heat shield as it seemed to really help with the underhood temps...

I hesitated to even post these pics becuase they are so ugly, but please go easy onme

Sorry I never got a shot with it installed in the car.

Speed of light

iTrader: (8)

^^^nice work blue87....anything you can do to keep heat where it belongs helps--a lot. As to it's appearance, I believe it was the great American architect Frank Lloyd Wright who said that "....form follows function...."

What many peeps don't realize is how intense radiant heat is. Using your favorite electric stove, turn a burner on high, let it heat up till it's red and stand next to it, try to put your hand near it. I'm sure you'll find it to be pretty intense, and that's only with about 2400watts. Yet this is exactly what occurs with the hotside components on your turbo setup when you get into boost for more than a few seconds. I can't underscore enough, just how important heat retention, heat shields, heat wrap and other forms of insulation are to the longevity of the components in your engine bay.

Highboost242

iTrader: (7)

It was done at HotShots in Davie, FL. http://www.hotshotusa.net/

Turnaround time was a little less than a week, I am not sure what type of coating they use but I am happy with the results!