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testing exhaust headers

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Old 09-12-2005, 02:07 PM
  #16  
special tool
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I don't keep all my datalogs. I don't bull**** - that's the way it is. I don't put **** on here just to run my mouth like a knucklehead.
Old 09-12-2005, 02:24 PM
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unreal_news
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As a 3rd party observer...

Geo says that Swain's White Lightning can cut heat throughput by over 50%, so just using that as a comparison for performance (we'll disreguard longengivity for now), what percentage of heat is retained by using DEI or thermotec and special coating?

also, what special coating is needed, is it a hardner for the wrap, or an additional thermal type spray?

thx,
-sd
Old 09-12-2005, 02:56 PM
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Mark-87-951
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Originally Posted by special tool
Nothng is better than wrap. I have datalogs
You may get slightly more energy retention using a coating IN ADDTON TO, but it does not outperform the wrap.

Mark - why do you need a compressor to use my procedure?
I must have misread. I'll give that a try with the one that has all the heat shield off.
Old 09-12-2005, 02:57 PM
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Mark-87-951
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Anyone familiar with this company?

http://www.performancecoatings.com/benefitdata.htm

Their data looks interesting and the prices are good. Swain's is great but about twice as much.
Old 09-12-2005, 02:59 PM
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Originally Posted by special tool
I don't keep all my datalogs. I don't bull**** - that's the way it is. I don't put **** on here just to run my mouth like a knucklehead.
I don't bull**** or run my mouth off either. I've given some hard numbers. What have you got? Have you even tested Swain's White Lightning vs uncoated or are you just assuming everything performs like Jet hot?

What data do you actually have?
Old 09-12-2005, 03:04 PM
  #21  
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Originally Posted by Mark-87-951
Anyone familiar with this company?

http://www.performancecoatings.com/benefitdata.htm

Their data looks interesting and the prices are good. Swain's is great but about twice as much.
Compared with Swain it will not do much. Most such coatings are off-the-shelf and simply ceramic paint. If you look carefully, you will see they only talk about what kind of temps it can withstand but nothing about any actual reductions in temps. Swain's coating is a true thermal barrier.

Most header companies use this type of coating because it looks pretty and will last longer than paint (which pretty much won't last at all on an uncoated header). Swain's coating can be painted and I did just that with my high output 2 liter SR20DE (Nissan) header. Never had a problem with the paint.
Old 09-12-2005, 03:11 PM
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Does anyone think its safe to remove the passenger heat shield if a thermal coating (wrap or swain) is applied to the headers?

thx,
-sd
Old 09-12-2005, 03:18 PM
  #23  
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I have datalogger RESULTS - not just marketing bull**** put out by the company that anyone can Google search on
I have 150 RPM better spoolup with the wrap.
You guys can listen to me (look at the output of my turbo......), or you can rely on ulta partial fairy-dust magic-coatings company.
Old 09-12-2005, 03:20 PM
  #24  
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Originally Posted by special tool
I have datalogger RESULTS ...
I have 150 RPM better spoolup with the wrap.
...
I assume that is compared to stock, Have you run swain coated headers?

How does THAT compare to a wrap?
Old 09-12-2005, 03:24 PM
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Of course
Old 09-12-2005, 03:27 PM
  #26  
Jon Moeller
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ST,
Have you run Swain White Lightning coated headers? You have datalogs, great, but you haven't answered that question, yet.

I plan to run Swain coatings on my headers and cross-over, so an answer to that question would be appreciated.
-J
Old 09-12-2005, 03:38 PM
  #27  
special tool
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I got negligible spoolup difference wth only that stuff.
You guys to wrap your headers and use the special DEI or Thermotec coating to retain the most exhaust energy.
Old 09-12-2005, 03:56 PM
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Here's a quick question...

how many 50' spools of wrap does it take ot cover the stock exhaust headers?

thanks,
-sd
Old 09-12-2005, 05:38 PM
  #29  
Geo
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Originally Posted by special tool
I have datalogger RESULTS - not just marketing bull**** put out by the company that anyone can Google search on
I have 150 RPM better spoolup with the wrap.
You guys can listen to me (look at the output of my turbo......), or you can rely on ulta partial fairy-dust magic-coatings company.
Prove it. You say you have datalogger results, but when I questioned you your reply was that you don't have them saved. Do you or don't you? Again, this is Swain White Lightning coated vs wrapped.

Must be the exact same car, header and/or turbo or your data is meaningless.

Just because your turbo puts out doesn't give you credibility in this matter.
Old 09-12-2005, 05:47 PM
  #30  
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I don't have them saved - I remember the results. I have made THOUSANDS of 944 related datalogs. You don't even have a logger, do you Geo?? Just another Rennlist speculator, I guess.

The difference is HUUUUGE - this topic of arguement is insane. The is no comparison between a DEI fabric wrap with a special spray coating and fairy dust magic coatings.
If you want to keep heat in the pipes - you wrap. Although - it won't be nearly as pretty as those fancy-pants, expensive coatings. So if you want a bling-bling home-boy set of pipes - get the coating.

By the way - to let you guys know how serious I am about REAL information - I have an aviation-grade EGT scanner, that tell me the temp of each individual pipe, or which one is hottest.
Who do you think knows the most about the inside of a 944 engine here????


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