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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications OEM Turbo Blankets

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      09-08-2023, 11:33 AM   #1
CarGuy954
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OEM Turbo Blankets

Just wondering if anyone has tried this turbo blanket below or if there are any others on the market?

https://funkmotorsport.com/product/b...et-b58-engine/
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      09-09-2023, 04:32 PM   #2
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I have seen some significant torque gain from turbo blankets in the past. I was hoping for some positive feedback for this one. My only concern would be the springs loosing tension.
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      09-10-2023, 01:55 AM   #3
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+2 I would like to know as well
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      09-11-2023, 07:19 AM   #4
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Found another one.

https://www.ptpturboblankets.com/col...nifold-blanket
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      09-11-2023, 10:26 AM   #5
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I like it. I will definitely be ordering one soon.
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      09-11-2023, 10:31 AM   #6
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do you think it will for m440 as well?
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      09-11-2023, 01:17 PM   #7
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Thanks for being the guinea pig BM5Built. Which one are you going with?
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      09-12-2023, 03:54 PM   #8
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Quote:
Originally Posted by CarGuy954 View Post
Thanks for being the guinea pig BM5Built. Which one are you going with?
I will go with the Funk Motorsport one.
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      09-13-2023, 04:47 AM   #9
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I’ve seen it installed on the F-series B58.

I didn’t like the fact that the install was such a pain so I made my own, only takes 2 bolts to remove/install. It insulates the heat coming off of the manifold well, after a spirited drive I can touch the heat shield. The material is lined with a fiberglass insulation much like what inside the turbo blankets.

The heat shield runs full length and is butt up against the cylinder head on top and bottom, it also separates the exhaust manifold from the compressor housing/turbo inlet.

Saw a drop of 12deg in IAT logs before and after in 100deg ambient temp.

Attached one photo of the test fit prior to making mounting brackets and the finished piece.
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      09-13-2023, 09:29 AM   #10
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https://www.verus-engineering.com/sh...D_BwE#attr=125

I run this on my car. Keeps the heat down really well.
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      09-13-2023, 12:40 PM   #11
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Wow, your DIY looks pretty good and I was curious on the affect on IAT's and engine bay. I did see verus one as well but figured it would just heat soak and eventually create the same problem. Does the Verus have insulation on the inside? I would think lining it would make a huge difference.
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      09-13-2023, 12:52 PM   #12
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Quote:
Originally Posted by CarGuy954 View Post
Wow, your DIY looks pretty good and I was curious on the affect on IAT's and engine bay. I did see verus one as well but figured it would just heat soak and eventually create the same problem. Does the Verus have insulation on the inside? I would think lining it would make a huge difference.
It does not. It's just the shield. It does work well but you are right the shield itself will heat soak after the car sits.
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      09-13-2023, 01:41 PM   #13
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Nevermind my question as I decide to not take the lazy way out and visited there site. There data seems pretty good across the board except for the hood temp increase, not sure why that happened. I have attached the results.
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      09-14-2023, 04:54 AM   #14
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Quote:
Originally Posted by CarGuy954 View Post
Wow, your DIY looks pretty good and I was curious on the affect on IAT's and engine bay. I did see verus one as well but figured it would just heat soak and eventually create the same problem. Does the Verus have insulation on the inside? I would think lining it would make a huge difference.
Thanks!

IIRC the verus data collection was on a 2 port don’t know if they ever retested with a 6 port, results may differ with the extra 4 ports. No insular on the Verus unit, once it’s heat soak basically turns into a heat sink rather than shield.


This heat shield makes a noticeable difference even after running logs in 100F ambient, surprisingly I can touch the heat shield after. If anyone is interested in real world data I can post the logs from before/after.

I spent about $70 in materials and I would guess about 6 hours of work total which includes measuring/trimming/shaping the original template prior to transferring it to the heat shield material. Seems like a lot of time but I now have a template just incase the fibers wear out (seen this in blankets), I can easily make myself another, without test fitting.
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      09-15-2023, 07:25 AM   #15
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If you have any data that would be great.
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      09-17-2023, 11:36 AM   #16
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Quote:
Originally Posted by A90TJ View Post
I’ve seen it installed on the F-series B58.

I didn’t like the fact that the install was such a pain so I made my own, only takes 2 bolts to remove/install. It insulates the heat coming off of the manifold well, after a spirited drive I can touch the heat shield. The material is lined with a fiberglass insulation much like what inside the turbo blankets.

The heat shield runs full length and is butt up against the cylinder head on top and bottom, it also separates the exhaust manifold from the compressor housing/turbo inlet.

Saw a drop of 12deg in IAT logs before and after in 100deg ambient temp.

Attached one photo of the test fit prior to making mounting brackets and the finished piece.
Would love to see details on how you made this! Seems like a similar material that Osprey uses but better coverage of the turbo area.
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      09-17-2023, 06:24 PM   #17
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Quote:
Originally Posted by RCKYMTN M34OI View Post
Would love to see details on how you made this! Seems like a similar material that Osprey uses but better coverage of the turbo area.
The osprey piece has no insulation on the backside. Outer material is the same, however mine has an insulated backside.

I made it to enclose the exhaust manifold as much as possible. Keeping the heat away from the compressor housing was key for me. You can see in the photos how close it is to the manifold, the heat shield actually slides in between that area and extends to the cylinder head.
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      09-17-2023, 06:26 PM   #18
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Quote:
Originally Posted by CarGuy954 View Post
If you have any data that would be great.
I have data logs of lower IAT, but I’ll try to do a test with a thermocouple setup in the engine bay for more data for you guys.
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      10-07-2023, 02:27 AM   #19
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Got a thermocouple but haven’t got around to taking off the heat shield to run a test.

Next mod I’m working on should help reduce how quickly the IATs rise. I used to get a rise of 30F from a 4-5 pull, now I’m down to a 15F rise.

Here is my latest log, IAT was 4F above ambient at the start, ended at 19F above. This is tested on factory charge cooling.
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      11-13-2023, 02:30 AM   #20
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Does using a turbo blanket like have an adverse effects?
Like the extra heat built up in the turbine housing - can it crack or cause issues there? It can increase temps in the housing significantly and if it wasn't designed for those temps could that be a problem?
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      11-15-2023, 12:43 AM   #21
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I spoke to a turbo specialist. They have fixed thousands of turbos over 40 years. They are in the business of repairing and fitting turbos.

They said, when they remove and take apart a turbo, they can always tell a turbo that had a blanket. NOT GOOD.

They did not recommend them at all. For the tiny gain you may get in spool up and reduced IAT's, the detrimental effect of the constant excessive heat on turbo and housing is not worth it.

Even the manifold blanket, any possible gain in lowering IATs , you have the consequence of retaining heat at the head. You thus have the possibility of raising cylinder head temps, countering any benefit.

I actually bought the Funk one. Haven't received it yet, but I'll be returning it for a refund after what I have heard.

Note that MANY say the opposite, and that a blanket increases the life of the turbo, but noone I've heard say that have taken apart and repaired thousands of turbos.

Last edited by cyam; 11-16-2023 at 10:32 PM..
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      11-15-2023, 10:46 AM   #22
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Quote:
Originally Posted by cyam View Post
I spoke to a turbo specialist. They have fixed thousands of turbos over 40 years. They are in the business of repairing and fitting turbos.

They said, when they remove and take apart a turbo, they can always tell a turbo that had a blanket. NOT GOOD.

They did not recommend them at all. For the tiny gain you may get in spool up and reduced IAT's, the detrimental effect of the constant excessive heat on turbo and housing is not worth it.

Even the manifold blanket, any possible gain in lowering IATs , you have the consequence of retaining heat at the head. You thus have the possibility of raising cylinder head temps, countering any benefit.

I actually bought the Funk one. Haven't received it yet, but I'll be returning it for a refund after what I have heard.

Note that MANY say, the opposite and that a blanket increases the life of the turbo, but noone I've heard say that have taken apart and repaired thousands of turbos.
This information specifically pertains to older turbos. The new tech in turbos nowadays and advanced oiling/cooling systems are a lot more improved in comparison to back in the day when this was truly an issue. The issue he is highlighting is that the extra heat behind held in would ruin the bearing systems on the turbo. But new turbos use different technology to release heat, and more importantly a lot of them use coolant to cool the bearing cartridge like our stock turbos. So the bearings are still being cooled even with a turbo blanket on it. If you go to ANY drag racing event, you will see a lot of people have turbo blankets on their turbo, especially B58 cars due to the location of the top mount (To prevent things around it from melting). Also, if you email Precision or Garret they will tell you that they do not void your warranty if you run a turbo blanket on their turbos. I've been running a turbo blanket for years on my other turbo cars and have not ever had an issue. On my M340i, I run the verus heat shield and I run 28 psi of boost on the stock turbo. 26k miles like this and I have had no issues.
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