stupid idea or logical.. ceramic coating MICA?

It's never stupid to keep thinking.
 

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?

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

bring this thread back!

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

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.

https://www.designengineering.com/si...urboshield.jpg

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

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

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

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

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 :)

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

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

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

revive... can you weld mica?

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.

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

I've seen it done on here

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..

any pics on the heat shielded dp tunnels?

!!
 

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:
http://i790.photobucket.com/albums/y...Greddymani.jpg

http://i790.photobucket.com/albums/y...reddymani2.jpg


AFTER:
http://i790.photobucket.com/albums/y...7/IMG_0472.jpg

http://i790.photobucket.com/albums/y...7/IMG_0474.jpg

Pics of the Pettit LIM Shield:

Turbo Side
http://i790.photobucket.com/albums/y...7/IMG_0476.jpg

Manifold Side
http://i790.photobucket.com/albums/y...7/IMG_0477.jpg

Comes with a mounting tab and hardware

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.

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?

... 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.

Downpipe heat shield
 

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.

^^^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.

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!

blue that looks dope! just wish the pics were bigger so i can admire and learn from your idea!

thanks guys for the comments .. I will see if I can find the original pic on my phone and upload a larger one. I will try and take a pic of the pie in teh car if I can today but the car is at work so it may not be possible until this weekend...

anybody think about making LIM/UIM gasket out of mica? wondering if it will seal... but should help with heat transferring?

gr8 thread again by HC.

thanks

I wrapped the entire LIM in DEI gold tape. Seems to do the job.

Attachment 759111

[QUOTE=Ball joint;10402934]I wrapped the entire LIM in DEI gold tape. Seems to do the job.]


thought you had a single. My thoughts were wrong. you driving that thing now?

this the stuff?

http://www.amazon.com/010397-Reflect.../dp/B0039Z1V1K

Yep, that's the stuff. I did the entire LIM and the underside of the UIM.

[QUOTE=just startn;10402956]Been driving it for seven years now, but never in the winter. It's got pretty much everything but a single turbo. I'll probably have non sequential BNR stage 3's on it for next year.

I'd rather build the car to be responsive and have a more progressive powerband. Single turbos are fun, but I don't like how the power comes on like a off/on switch. Maybe if I was still street racing I'd go for bigger power but I don't do that very much anymore. That and unless you're making 500+whp you're wasting your time.

Are those mica sheets adhesive & flexible like the gold tape mentioned above? The mica seems as it would be a better shield than the gold.

Reviving thread!

Howard, do you have any suggestions for those of us with stock twins or BNRs? Are there any turbo blankets that would fit?

Great thread! I had no idea this was happening. Thanks so much Howard.

Is it pretty bad if the turbo blanket touches the lim? I have a t04r and it sits very close to the lim, I squeezed on a turbo blanket but I'm worried about it cause it is like smashed inbetween the turbo and lim, although the lim does have some really good high temp heat reflective tape on it. The cheap turbo blanket seems to hold in the radiant heat good, unlike the cheap exhaust wrap on the downpipe and exhaust manifold, I need to use the dei titanium wrap from my stock turbos down pipe which worked better I think. I also want to get a pettit heat shield, cheap and effective. Good thread. thanks

I'd recommend using all the OEM heat shields. Typically at IRP cars leaving with twins get the exhaust manifold, LIM and heat shields coated in 3600 degree cerama-black. The downpipe gets wrapped in the new DEI titanium lavarock wrap. This is for cars seeing track duty, and/or if the owner is concerned about heat management.

Can you discuss the differences between the cerama-chrome and cerama-black coating I've seen from your shop? Really love the chrome look but realize it is likely more expensive. Curious if it is equally effective.

^The cerama-black has a higher heat rating than the chrome.


John

As I believe it generally jives with the purpose of this thread, where does IRP send out for their coating and what is the price generally, for a LIM, downpipe, UIM, etc. to be coated? (both cerama-black and cerama-chrome)