Author Topic: Muffler paint  (Read 286 times)

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Offline farmboy

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Re: Muffler paint
« Reply #20 on: May 14, 2014, 08:12:28 am »
I have used the POR15, it works GREAT, and does everything it says it does but $$$$$$$!
Cost is why I haven't even tried it.  Always heard positive review on the products.  Would like to try it tho.
Shep

Offline KilliansRedLeo

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Re: Muffler paint
« Reply #21 on: May 14, 2014, 09:20:27 am »
It is a two part system that you mix. 3M also makes a three part system, a resin, hardner and powered nickel. Lots of the race snowmobile guys use it because it is High Temp, does not burn off and the nickel stops surfaces from rusting. Also very expensive. When I run out of the DEI stuff I am using, going to try your method!
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline KilliansRedLeo

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Re: Muffler paint
« Reply #22 on: May 25, 2014, 08:19:44 am »
I have been doing some muffler experiments and thought I would also test some different paints. As said earlier I tried DEI high temp from an auto parts store, then went to Home Despot to get tire rust reformer and grill paint Shep uses, whilst there I noticed Rustoleum HT automotive paint so got a can of that. So far on the five mufflers I am working with I have this to report.

DEI as applied it provides a slightly burnished appearance. More than one light coat is necessary to get good coverage. Must be baked on @400 for 30 minutes to fully cure. If you aren't meticulous in your prep it will flake off.

Rust Reformer works great

Rustoleum HT automotive flat black when cured for 30 minutes @250. Two light coats for good coverage.

Grill paint, have not tried it yet.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline 1manband

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Re: Muffler paint
« Reply #23 on: May 25, 2014, 09:54:11 am »
when i have checked muffler temps in the past, do not remember a temp being over about 180F after about 15 to 20 minutes run time.

although i cannot measure the temp accurately between the cylinder side of muffler, assume it would be higher.

have a willow that will be coming down tomorrow, will measure some temps when saws are running for extended times with a fluke IR thermometer.

most of the automotive engine block/intake paints are good for 350F or 500F.  maybe they would cost less?

-joe
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Offline 1manband

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Re: Muffler paint
« Reply #24 on: May 28, 2014, 05:02:13 pm »
cut down willow memorial day.  turned into a project involving a jeep, chains and cables.  brought the temp guage outside but forgot about it.

used it for chicken and turkey on the grill, however.  birds ran about 185.

will get some when bucking it up.

-joe
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Offline 1manband

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Re: Muffler paint
« Reply #25 on: May 31, 2014, 08:53:34 pm »
took some temp readings on the upper portion of muffler today.
echo cs-590

bucking 12 to 18 inch logs
@ cold =76.5 F
@ 5 minutes = 443.4 F
@ 7 minutes = 402.5 F
@ 10 min. = 430.3 F
@ 12 min. = 455.8 F
-----------------------------------------
chain was now sharpened.
bar buried in 18 inch + wood
@ cold = 81.5
@ 2 min. = 479.0
@ 4 min. = 475.5
@ 6 min. = 450.2
@ 8 min. = 450.5
@ 10 min. = 410.3

running tad rich, dark insulator.

higher temps than expected.

-joe




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Offline 3000 FPS

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Re: Muffler paint
« Reply #26 on: May 31, 2014, 09:10:11 pm »
Heck I like the readings you took.   Gives me more of a real world idea of what exhaust temps are.
PP 505, 475, 445.

Offline 660magnum

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Re: Muffler paint
« Reply #27 on: May 31, 2014, 09:42:00 pm »
They are a lot higher than I imagined. Sounds like it was a CAT muffler.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline 1manband

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Re: Muffler paint
« Reply #28 on: June 01, 2014, 06:16:16 am »
from what was told, don't believe it has a typical cat muffler.

an interesting find that showed up during the temp readings, was the amount of temperature drop in the muffler as the saw was idled down.  went down almost 50 degrees almost immediately. 

the above temp readings had to be taken very quickly, to be accurate.

another interesting thing was how quickly the temps went up from cold.  it was like an large initial spike, as the saw was loaded as time went on, the temperature dropped.  hard to tell by what i wrote down, but that was the case.

to get an idea of how much load on the saw there was during the 22 minutes of runtime the saw had, it burned almost 3/4 of a tank of fuel.  60cc saw.

-joe
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Offline 660magnum

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Re: Muffler paint
« Reply #29 on: June 01, 2014, 09:19:29 am »
Those temperatures are much higher than what would be safe for the engine if they were cylinder head temperatures.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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