Ceramic Coated Exhaust

gthotchkiss · 07-19-2006, 3:00 PM

So a buddy of mine is telling me that he's getting his exhaust coated with this ceramic film... He's telling me it will run 30 deg cooler and that he has actually tested it... Does this sound legit?

BDA116 · 07-19-2006, 3:27 PM

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booracer · 07-19-2006, 3:42 PM

used it on headers for cars and other coatings for piston tops and skirts with success. should be the same for bikes.

gthotchkiss · 07-19-2006, 3:44 PM

reduces engine heat... increases power... where's the negative.... do they add a ton of weight or something?

I mean there has to be some reason that everone doesn't bring this up as a solution..... ???

Pete · 07-19-2006, 3:49 PM

Quote:

Originally Posted by gthotchkiss

I mean there has to be some reason that everone doesn't bring this up as a solution..... ???

HP/Dollar

booracer · 07-19-2006, 3:50 PM

translation, $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$.

gthotchkiss · 07-19-2006, 3:59 PM

Ohh.... yeah, I guess that makes sense....

Lets say you did it tho, would you need to rejet? Air would be flowing much quicker....

Also, if there is anyone who has done this, how much did it cost?

gt702 · 07-19-2006, 4:34 PM

Quote:

Originally Posted by gthotchkiss

Ohh.... yeah, I guess that makes sense....

Lets say you did it tho, would you need to rejet? Air would be flowing much quicker....

Also, if there is anyone who has done this, how much did it cost?

The way I see it, if you aren't after the last 1-2% of HP from then engine, then it probably doesn't make sense from a performance stand point. If you have an engine compartment heat issue, this is an option as is heat blanket/wrap; a word of caution here is that in some applications this insulation means the pipe doesn't cool and heat doesn't go away from the cylinder head and can cause issues. The last benefit is looks, which some really like, but I have also heard some of the coatings don't last that long.

The rejetting issue would likely be application dependent, but I don't see the improvement in airflow being that great ... but I've never used the stuff myself, so ...

gthotchkiss · 07-19-2006, 4:50 PM

I was originally looking at it for its heat shield abilities... from what I understand the inside and outside of the pipes are coated, so the heat doesn't asorb into the metal of the pipe.... thus lowering the temp, and allowing faster air flow....

Not claiming to be knowledgable... just trying to learn

Red Rider · 07-19-2006, 4:55 PM

A couple of guys on the VFR List have had the JetHot coating done on their bikes to help reduce the ungawdly heat from the V4's...and to dress up the pipes a little bit, too.

CBR929RE · 07-19-2006, 7:57 PM

Ti pipe all the way back on my bike, dissipates heat faster than other metals. so I see no reason to mess with that.

on my car I have ceramic coated headers, I don't know it it made much difference but just switching to headers from manifolds certainly did make a difference. and yes they do look very good.

ray916mn · 07-19-2006, 10:08 PM

Legit. Some people use header wrap to achieve the same effect. Not a big effect, but clearly legit.

I've got a D&D pipe on my ZX11 which came with a ceramicote finish. 13 years old and over 50K miles has held up as well or better than chrome.

FWIW
Ray

Custom900 · 07-23-2006, 1:00 AM

I was going to use header wrap and moved away from the idea because of rust issues. The wrap can absorb water to some degree if it gets wet and cause rust if the wrap is left to sit and dry on it's own.

Look at my pics. My headers have been coated and do fine. Now that they are coated though I'm thinking about adding the wrap as well and try to keep things inside the body cooler. Sitting at a light or other stop gets hot.

Did my temps go down? Maybe - a big maybe. 1 or 2 degrees at the most. Does it look cool? I like a black exhaust.

AMTFGH · 07-23-2006, 2:57 AM

Jet-Hot for me. Used it on my classic car. And will use it for the dirt-bikes.

SpikedLemon · 07-23-2006, 10:55 PM

Quote:

Originally Posted by gthotchkiss

I was originally looking at it for its heat shield abilities... from what I understand the inside and outside of the pipes are coated, so the heat doesn't asorb into the metal of the pipe.... thus lowering the temp, and allowing faster air flow....

Not claiming to be knowledgable... just trying to learn

Coating the inside will also restrict flow by making the opening smaller. I suppose that's a negligible change in flow but one nonetheless.

I do, however, see this as a benefit to cars FAR more than motorcycles. Bikes already have the headers (and all pipes) out in the air stream to start. Cars have their headers locked in a box (under the hood) away from moving air. Cars will, no doubt, see FAR more benefits than a motorcycle would as it will reduce the under-hood temperature.