Do they not wrap head pipes because of looks?

hillbilly
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hillbilly
Edited Date/Time 2/5/2016 6:44pm
Keeping gases hot keeps them flowing.

They have wraps and coatings for car headers now that look good.

Dont see it done much on bikes.
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Andy_Greenney 2/3/2016 7:43am
2/3/2016 7:43am Edited Date/Time 2/3/2016 7:45am
The cooling effect could be used to improve back pressure? Or any wrap would require constant maintenance? I'm only guessing, I think people being aware of the advantage of silencer packing would yield better results than hear wrap

I did wrap a crf pipe once when running a hydraulic clutch, to try to improve consistency...it didn't help
moto455va
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moto455va 2/3/2016 7:48am
2/3/2016 7:48am Edited Date/Time 2/3/2016 7:49am
pretty sure the SlaterSkins guys wrap their pipes. Theyre not exactly concerned about looks though
BobPA
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BobPA 2/3/2016 9:13am
2/3/2016 9:13am
I've always thought the same thing. I'm wondering if they are worried about eating up the packing in long Moros and failing sound
Forty
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Forty 2/3/2016 9:52am
2/3/2016 9:52am
Roger Decoster would not tolerate the additional weight..........

I've seen some local guys with pipes wrapped..

The Shop

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Moto75
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Moto75 2/3/2016 9:55am
2/3/2016 9:55am
Wrapping ti is not a good idea.
IWreckALot
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IWreckALot 2/3/2016 10:10am
2/3/2016 10:10am
moto455va wrote:
pretty sure the SlaterSkins guys wrap their pipes. Theyre not exactly concerned about looks though
That's the truth. Haha.
Jrewing
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Jrewing 2/3/2016 1:43pm
2/3/2016 1:43pm Edited Date/Time 2/3/2016 1:43pm
Moto75 wrote:
Wrapping ti is not a good idea.
Unless it's a 15-16 Honda and it melts your boots

Oops wrong quote...
Joe Camel
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Joe Camel 2/3/2016 3:20pm
2/3/2016 3:20pm
Mine look like chrome. But not chrome. Not nickel.
Johnny Ringo
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Johnny Ringo 2/3/2016 3:38pm
2/3/2016 3:38pm
I wrap everything of mine. That's what getting the Clap twice will do to a guy.
Gringoe
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Gringoe 2/3/2016 4:03pm
2/3/2016 4:03pm Edited Date/Time 2/3/2016 4:05pm
BobPA wrote:
I've always thought the same thing. I'm wondering if they are worried about eating up the packing in long Moros and failing sound
They don't do sound tests after/between motos in USA.

Hell, i don't think they actually do any period.
SmoothOperator 2/3/2016 4:42pm
2/3/2016 4:42pm
I had the exhaust of my Panigale ceramic coated. I've debated doing it on my dirty bikes, but have never gotten around to it.
TheGetFresh
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TheGetFresh 2/3/2016 6:15pm
2/3/2016 6:15pm
I'd think wrapping would help on some pipes that have a habit of burning pants. Would look stupid though
mxb2
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mxb2 2/3/2016 6:24pm
2/3/2016 6:24pm
TheGetFresh wrote:
I'd think wrapping would help on some pipes that have a habit of burning pants. Would look stupid though
Plenty of cf. Header heat shields out there for sale. ,saves boots, pants.
fulltime wrench 2/3/2016 6:33pm
2/3/2016 6:33pm Edited Date/Time 2/3/2016 6:35pm
I wont do it because it is a pain in the ass to wrap a header. I used to do it all the time on harleys at my dads shop. It got easier after a few times but it still sucked.

The best way to do it is soak the wrap in a bucket of water before wrapping the pipe. After you put the exhaust back on the bike start it up while it is still wet. This dries the fabric really fast and causes it to draw up tightly on the pipe, making for a better looking and longer lasting job.

It would take me about 2hrs to do two longer headers. I would rather spend 2hrs standing at the parts washer scrubbing a disassembled engine piece by piece.

Thank god I dont make a living workin on bikes anymore. Doing it for $ takes the fun out of it.
ML512
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ML512 2/3/2016 6:37pm
2/3/2016 6:37pm
Gringoe wrote:
They don't do sound tests after/between motos in USA.

Hell, i don't think they actually do any period.
They do sound testing at every Supercross... Every rider must do it pre-race and suspect bikes are tested after practices or heat races.
Gringoe
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Gringoe 2/3/2016 7:02pm
2/3/2016 7:02pm
Gringoe wrote:
They don't do sound tests after/between motos in USA.

Hell, i don't think they actually do any period.
ML512 wrote:
They do sound testing at every Supercross... Every rider must do it pre-race and suspect bikes are tested after practices or heat races.
There is no motos at sx races

Wink

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fox1nz
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fox1nz 2/3/2016 7:16pm
2/3/2016 7:16pm Edited Date/Time 2/3/2016 7:18pm
Moto75 wrote:
Wrapping ti is not a good idea.
Why?
fox1nz
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fox1nz 2/3/2016 7:22pm
2/3/2016 7:22pm
Johnny Ringo wrote:
I wrap everything of mine. That's what getting the Clap twice will do to a guy.
Gee yr rides sound a little rough, I suggest two raps with a layer of heat treatment cream between the two, when the first one fails you'll no its time to bail..
good luck bud
mxb2
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mxb2 2/4/2016 2:17pm
2/4/2016 2:17pm
Megabomb cf heat shield on my zook, saves boots and pants.
hillbilly
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hillbilly 2/5/2016 5:53am
2/5/2016 5:53am
That article aint right.

Ok,dont wrap TI because of the metal and I'd never wrap a 2st because of it being a totally different animal in terms of the expansion chamber and high low pressure impulses.

NASCAR and pro stock wrap headers to evacuate gases faster,backpressure is not wanted at the headpipe /valve bowl area but is desired at the end of the pipe, like we used reverse cone megaphone tips back in the day.

To each their own.

I just figured it covered the PC or fmf badges.
CarlinoJoeVideo
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CarlinoJoeVideo 2/5/2016 6:31am
2/5/2016 6:31am
moto455va wrote:
pretty sure the SlaterSkins guys wrap their pipes. Theyre not exactly concerned about looks though
IWreckALot wrote:
That's the truth. Haha.
I saw this on Instagram...Silly


dean122
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dean122 2/5/2016 8:27am
2/5/2016 8:27am
Wouldn't there be condensation issues with wrapping also?
The Rock
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The Rock 2/5/2016 8:46am
2/5/2016 8:46am
The reason you don't see it in our sport is it decreases engine performance. Contrary to hillbilly and the guy who did Slaterskins/Blue Buffalo motors in 250 East SX in 2015 think it is a terrible idea.

The header wrap unless you are going warp speed like they do in car and road racing makes the engine retain heat.

As anyone who has tested on a dyno can attest to as the heat goes up the power goes down.
BobPA
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BobPA 2/5/2016 8:56am
2/5/2016 8:56am
The Rock wrote:
The reason you don't see it in our sport is it decreases engine performance. Contrary to hillbilly and the guy who did Slaterskins/Blue Buffalo motors in...
The reason you don't see it in our sport is it decreases engine performance. Contrary to hillbilly and the guy who did Slaterskins/Blue Buffalo motors in 250 East SX in 2015 think it is a terrible idea.

The header wrap unless you are going warp speed like they do in car and road racing makes the engine retain heat.

As anyone who has tested on a dyno can attest to as the heat goes up the power goes down.
I always thought header wrap would be a good idea for tight single track setups. I do not know if you have noticed, but headers are pretty damn close to the bottom of the radiator on most 4 strokes. Even a small air gap heat shield would help IMO.
731chopper
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731chopper 2/5/2016 9:06am
2/5/2016 9:06am Edited Date/Time 2/5/2016 9:15am
dean122 wrote:
Wouldn't there be condensation issues with wrapping also?
That is the way I always understood it. A wrapped header acts as exterior insulation causing condensation on the interior of the pipe which could create a problem in the silencer with the packing because of too much water vapor. I could be totally wrong though.

After briefly searching the theory maybe that is just an old wives tale? This is a pretty interesting read.

http://www.centuryperformance.com/exhaust-header-heat-wraps-do-not-use…
The Rock
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The Rock 2/5/2016 9:24am
2/5/2016 9:24am
The Rock wrote:
The reason you don't see it in our sport is it decreases engine performance. Contrary to hillbilly and the guy who did Slaterskins/Blue Buffalo motors in...
The reason you don't see it in our sport is it decreases engine performance. Contrary to hillbilly and the guy who did Slaterskins/Blue Buffalo motors in 250 East SX in 2015 think it is a terrible idea.

The header wrap unless you are going warp speed like they do in car and road racing makes the engine retain heat.

As anyone who has tested on a dyno can attest to as the heat goes up the power goes down.
BobPA wrote:
I always thought header wrap would be a good idea for tight single track setups. I do not know if you have noticed, but headers are...
I always thought header wrap would be a good idea for tight single track setups. I do not know if you have noticed, but headers are pretty damn close to the bottom of the radiator on most 4 strokes. Even a small air gap heat shield would help IMO.
If it helped ANY you would have seen it on Mitch's bikes years ago. I will admit on a cool SX evening you could probably get away with it but you are still weakening the header due to increased heat. Some teams will actually tape off part of the radiator to get the operating temps in the optimal range. Frenchy did this occasionally on the factory Yamaha 250Fs at a few SX races but never at a National.

731chopper the issue is increased heat in cylinder not water vapor affecting muffler packing.

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