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Old 07-25-2009, 08:21 PM   #1
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Default Ceramic Coated Pipes

Hey guys,
Have you ever ran a ceramic coated pipe? Not hard coated but the ceramic heat coating..
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Old 07-26-2009, 07:01 AM   #2
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Nope, but sounds like a good idea.

I am actually sick of all these polished pipes. I much preferred the hard coating on Paris and some Nova pipes. Might not have looked as good when new but looked much better after a few runs.
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Old 07-26-2009, 07:10 AM   #3
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Don't like the idea. More weight. I'm trying to slim down to class weight now and it is not easy or cheep.
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Old 07-26-2009, 08:44 AM   #4
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Correct me if I'm wrong here, but aren't the use of ceramics in exhaust components prohibited by either ROAR or IFMAR of FEMCA? I seem to recall reading something about that a couple years ago.
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Old 07-26-2009, 11:08 AM   #5
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Quote:
Originally Posted by captain america View Post
Correct me if I'm wrong here, but aren't the use of ceramics in exhaust components prohibited by either ROAR or IFMAR of FEMCA? I seem to recall reading something about that a couple years ago.
Ceramic engine components are illegal except for the bearings. Ceramic coatings are allowed on anything as far as I know.
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Old 07-26-2009, 08:48 PM   #6
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Quote:
Originally Posted by wingracer View Post
Ceramic engine components are illegal except for the bearings. Ceramic coatings are allowed on anything as far as I know.
Not to sound like a PITA, but 2 strokes dont work like 4 strokes in the terms of enthropy.

A raw metal tuned exhaust works better that ANY coated unit.
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Old 07-26-2009, 09:04 PM   #7
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I am not an expert by any means ,but I know on full size race cars the exaust components are ceramic coated to reduce engine bay temps along with
1 corrision resistance
2 ceramic keeps the heat in the pipe for cooler thermal barrier
3 keeping the heat in the manifold and pipe increases gas velocity which increases backpresssure and prevents fuel contamination due to reversion
4 pipes get hot and the reduced temp may keep your skin on your body
with the ceramic thremal barrier major componets like our fuel tank for example is cooler too. I am curious to see what it would do. I always thought of doing the exaust wrap too? but that was heavy and cumersome on such a small part.
I am no expert these were just some of the key points to why ceramic is good. now for two stroke it may be different due to the way a nitro engine actually works.
5 oh yeah it looks bitchin too.theres my vote looks bitchin
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Old 07-26-2009, 09:32 PM   #8
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I have been ceramic coating pipes and using them since last summer. I have used an "air dry" version that has a 1700 degree temp. threshold, & another that is "baked" on and has a 600 degree heat rating.

They both make the maintenance on the pipe easier and seem to run the same. So I dig it.

I have also been playing with an internal coating on the header only. doing this in conjunction with the external coating on the header greatly reduces the heat readings on the header itself.

I don't have the egt (exhaust gas temp.) equipment needed to measure the changes, going from raw aluminum to coated aluminum, but like I said before, my runtimes have not changed, and they pipes are easier to keep clean.


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Old 07-26-2009, 09:56 PM   #9
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Don't the numbers have to be showing to make the pipe leagle for racing a sanctioned event.......Coating would cover it up wouldent it....
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Old 07-27-2009, 08:14 AM   #10
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Quote:
Originally Posted by Racecrafter View Post
Not to sound like a PITA, but 2 strokes dont work like 4 strokes in the terms of enthropy.

A raw metal tuned exhaust works better that ANY coated unit.
+1 here but I don't think our "tuned" pipes are anywhere close to where they need to be for real benefit and efficiency. They're basically mufflers that have been improved upon. Look at the length of tuned pipes on boats, race planes and motorcross bikes. These things are looooong and in the case of motorcycles, always steel for resonance. That would never fit our small cars. These things are pressure wave chambers and everything I've read indicates bare steel is the best thing to use for these.
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Old 07-27-2009, 08:34 AM   #11
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The reason ours are shorter is because of the very high RPM's we run. The higher the rpm, the shorter the pipe needs to be. Boats planes and motorcycles tend to run anywhere from 9,000 to 20,000 rpm's and therefore require much longer pipes than our 30,000 to 40,000 screamers.
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Old 07-27-2009, 09:48 AM   #12
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Boats and race planes run far higher rpms than we do, still with long (about 4x as long) pipes. They do run at nearly constant rpm though, they have little need for bottom end power or sharp throttle response.
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Old 07-27-2009, 09:51 AM   #13
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Most pipes are aluminum, aren't they?
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Old 07-27-2009, 10:37 AM   #14
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most pipes are aluminum with a hard coating, I am going to test a few that are ceramic coated with the header coated inside and out, looks better, no weight added and keeps other componets around it cooler, including the fuel

I worked for HPC years back and this stuff does make a difference even in these small motors with the combustion process and consistancy. We coated for a RC manufacturer for a while when I worked there and I think they still do RC stuff.
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Old 07-27-2009, 10:42 AM   #15
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I also run a ceramic coating called "Slik Coat" on the internal gears of my Mugen diffs. It is designed for use on piston tops to prevent carbon from sticking and piston lowers to help keep oil from sticking.
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