It's refreshing to watch someone who gives absolutely no fucks about monetization and makes informative, well put together videos with scientific explanations to clarify everything. Cheers, mate.
I agree except one little thing , I'm from America. So to me this was the most unclear, clear and concise explanation I've heard so far too... lol jk jk great video man
At first I was like “What?” Then I was like “huh!” And at the end I was ready to teach a class on the mechanics of exhaust systems. Well done sir, well done.
There is a 4th reason to do exhaust wraps - thermal control. I have an air cooled dirt bike where the header pipe is very close to the cylinder body and the carb bowl. Instead of making heat shields, a good wrap helped cut down the radiant heat soaking the bowl - and maybe helped keep a little heat out of the cylinder itself. It also helps with keeping my right leg from roasting, so bonus!
Very good point. On one of my Harleys the exhaust is right near the oil tank. And it burns the shit out of my pants. But the main reason I want to wrap it is to keep more heat off of the other shit. For example the oil tank.
This is what i was wondering about as well. Let's say you have an air/oil cooled bandit with the headers straight in front of the block, would an exhaust wrap help cooling the block, since the moving air wouldn't be heated as much by the headers before hitting the cooling fans of the block?
Wow just watch this as I am investigating wrapping my 1997 Kawasaki VN800 after converting to a bobber and wanted to understand the pro's and con's and watched other vids but yours was excellently presented easy to understand well done.
This appears on my recommendations since weeks. Now that I opened it finally I hope youtube is being satisfied at last and stops recommending it to me.
*Pro Tip:* Before wrapping your headers, scuff them up, prime them with high temp primer, then paint them with high temp paint. This will protect them from moisture/corrosion.
My thunderheaders are ceramic coated but still required shields to keep from frying my right leg. After a few years I removed the shields and wrapped them. I prefer the look and reduction of labor when I don't have to fool around with the shields. To those that worry about corrosion just don't let the wrap stay wet on the pipes any longer than needed. They dry out quickly with minimal steam production once the engine is running. Been running wrap for years now. Glad to hear that it helped performance a small bit. Thanks for the clear explanation.
There is a video here on you tube where a guy is using a hand held temperature sensor and it clearly shows that wrapped pipes are hotter than unwrapped pipes so your chance of getting burned is now greater. I was going to do the same thing till I saw this video.
@@bb2na473 there is definitely a change in temp. I have a wrapped thunder header on my bike and believe me you can feel the heat so much more after wrapping the pipes.
@@edkay3601 there is a difference between touching hot cloth and hot steel. Heat will transfer much faster to your skin from the metal than it will from the cloth. So even if the cloth is hotter, it won't burn you nearly as quickly as the metal. If you don't get what I'm saying, think of the difference between air and water. You can put your hands in an oven at 350 degrees without getting burned, but if you put your hands in water boiling at 212 degrees, you'll get burned very quickly.
Thank you for boosting my confidence, I feel more intelligent, of greater interest, my looks improved, my speech ability stronger and my dress sense sharper than before, thank you.
Thanks Matt the only guy that did it that I have asked was on a v twin cruiser and he said it was to avoid burning his leg. I used to see a lot of two strokes with home made race pipes at club races and they were invariably black and metal. Didn't know it caused corrosion, thanks.
Thanks for such clear and precise explanation. I just bought my first 125cc and the previous owner had wrap around the exhaust. Made me curious about its puepose.
Thank you for the informative video that isn’t filled with bullshit blah blah, theatrics and annoying music. There are people who look into TH-cam for information and testing, or even instructions on how to use a product or want to know their experiences using it and the down sides. Sir, you have delivered, enough said....
You're a cluey fella. Keep up the videos, perhaps one where you pull apart different 2stroke japanese power valves and explain each. I really enjoyed the Kx series.
I like the looks of the wrap and I think it's more appropriate for me than the ceramic, I do ride it on dirt/mud and rocks, so the protection is the most important for me.
Really great video. I did wondered why people wrapped exhaust other than for looks. A brilliant explanation. I have to say I do like the look of exhaust wrap.
@@viarnay -Could be one historic reason for general aviation, those with internal combustion, having a few issues contacting dirt... more often than planned ;}
Just to toss in my 2 cents, in car applications it does a good job of keeping the temp down under the bonnet. I put in on my MG's header for this purpose. Also the protection from burns factor if I am adjusting carbs while the engine is hot.
I had a problem with wire harness melting from exhaust heat and the wrap did the trick. I did the exhaust with wrap and used spark plug heat shielding (same make as the wrap) and works great. The intake manifold stays cool as well witch doesn't help fuel milage but improves torque for when you have to hall 1000 pounds of tractor, rider, and equipment up steep hills👍
Exhaust scavenging 101. Thus why small header opening and exhaust getting bigger towards end to help speeds and hopefully create small vacuum before intake opens. Heat shields may work in some cases to block heat. My 360 has wrap so i don't burn my leg. Great video.
Here in Vegas it never rains so maybe nice here. I could see how on the coast with high humidity and frequent moisture that it could ruin pipes over time. Long live the Vegas riders!
I had exhaust wrap on my 125, I painted the exhaust with VHT paint first and cured that, then I applied the wrap, after a very wet and horrible year I removed the wrap as it started to go white from heat and found my exhaust looked just as good as when I painted it. I think a lot of people forget to paint or protect the metal, as said the wrap will hold water when not running and so on.
Exactly. Also, never put the bike to sleep if the wrap is wet. (Caught in the rain on the way home) Let the bike idle and the exhaust wrap will be bone dry in no time.
on my husq 510 i just did a double layer 25 cm long next to my leg. no change in performance but now i dont cook myself when im stopped at a traffic light... 3 years later and i havent had any problems
Done a wrap once on a Yamaha XT225 I had but just on the first portion of the exaust. It looked awesome and people thought I had modified the engine somewhat (which I hadn't). The plus side for me was that it eliminated the heat around my right foot which in a hot country like Brazil, it's a big gain. Cheers and excellent video mate! Can't stress this enough. Love your work.
Very well explained. I had a 500cc Scooter where the frame would get incredibly hot in summer on long rides. Suddenly you would loose power and had to wait for it to cool down again. I found out that the exhaust was heating the frame and the frame heated the ignition coil. Wrapped the exhaust and the problem went away.
Excellent description...could you continue the explanation about speed of the sound wave/efficiency of scavenging, with respect to other aspects of the exhaust...mainly the impact on scavenging of removing or downsizing the cat, and the impact of pipe diameter? That’s the age old problem many people try to solve to increase power (along with tuning the length of the exhaust). As it’s possible to buy E marked cats that are much smaller than OEM, and which fit inside the diameter of the header pipe, it’d be interesting to know the impact of removal or downsizing on scavenging : )
Thanks Matt, very interesting video. I only can add that this thing is cheap and reversible; and it doesn't make any bad to the bike; so if you want to try it then try it, in any moment you can take it away. Regards from Argentina
The main practical reason to use exhaust wrap is to mitigate heat soak. In cars, wrapped headers will reduce underhood temps, which can then result in more power by allowing you to advance timing without incurring detonation. In turbo cars, cooler temps can allow you to reliably run higher boost. On motorcycles, the exhaust pipes often run by the oil pan, your legs, and other things that work better when not cooking. If your bike is air-cooled, keeping hot exhaust gases away can open up similar tuning opportunities as with cars.
so i watched a coupla more of yer vids, this one included, and they were very good. i also watched a vid by another fella and now i know about the "war". i have subscribed...
Great video. I'm doing a ground up rebuild on my Vstar after laying it down and exhaust decision was in the air.. Gonna wrap for looks and I don't wanna drop half a K on some new V & H shortpipes ATM. Plus that whole cruiser with hot melty pipes thing does suck..
Another good reason for exhaust wraps in this day and age is that the catalytic converter is more efficient at higher temperatures, so you want the exhaust gases delivered to the cat to be maintained to (as far as I remember) about 375 degrees C.
A wrapped exhaust system may have more back pressure due to the fact that the exhaust gases remain hot longer. As the gases cool, the exhaust gas contracts, flowing more freely out the pipe. Exhaust pipes on turbo systems are rarely wrapped because it causes too much heat to be retained in the exhaust system, causing the turbocharger center section bearing to fail or the oil to coke up.
The truth is it's most often done on street bikes to cover old corroded pipes. Before wrapping became fashionable the usual, and effective way to cover up old shit was barbeque black flat black paint. My reaction to fashionable mods supposedly done for performance is "dyno slips before and after or fuck off". You can measure everything an engine does. Wrap is quick and cheap. Having old pipes blasted then ceramic coated or spray metallized is not cheap for most owners. I've peeled enough of it off customer bikes to have no fondness for it, but if you are selling a motorcycle it can tidy things up.
Wrapped my pipe to not melt any more winter clothing :). I think it looks good on the on my bike, scared to take it off and look under the wrap though ahah:p
I always thought wraps were just to prevent burns to the leg haha, I don't like the look of it but the paint on my pipes were damaged in the post and the seller took no responsibility so I am thinking of wrapping to cover it up.
Great explanation. My MR2 currently has wrap and it's all falling off. Perhaps I just remove what's left, and have done with it. As a personal thing, I think exhaust wrap looks horrible. As I final note, I am getting up 70, and was a Rocker, Cafe Racer guy. I never ever saw anyone have exhaust wrap on their bikes. Maybe an American thing, I don't know, but not Cafe Racer.
Going to wrap the exhausts on my Guzzi great explanation think it would look good on my V9 Bobber is it best to overlap by half or a third if sumone could reply ide be most grateful .😀
P.S some RC boats with 2 strokes have water cooled exhausts some use a wrap. For an engine with crazy porting and a narrow power band presumably the wrap is too stop the pipe from detuning?
It's refreshing to watch someone who gives absolutely no fucks about monetization and makes informative, well put together videos with scientific explanations to clarify everything. Cheers, mate.
Revhead dOnT fOrGeT tO LiKe, CoMmEnT aNd SuBsCrIbE
Revhead except he forgot about the main pro for wraps.. reducing under hood heat.
5abivt my guess would be because of the channel’s focus on motorcycles they glossed over that
haha Right? He's drawing diagrams and I'm paying more attention than i did in my marriage counseling.
dang, that was the most clear and concise explanation I've heard. excellent job sir!
No worries mate thanks for the comment - matt
I agree except one little thing , I'm from America. So to me this was the most unclear, clear and concise explanation I've heard so far too...
lol jk jk great video man
Wrapped mine for looks. Never knew there was any other benefit. Loved the scientific explanation.
Clear, concise, informative and without the extra bullshit nobody ever asks for. Great vid
At first I was like “What?” Then I was like “huh!” And at the end I was ready to teach a class on the mechanics of exhaust systems. Well done sir, well done.
There is a 4th reason to do exhaust wraps - thermal control. I have an air cooled dirt bike where the header pipe is very close to the cylinder body and the carb bowl. Instead of making heat shields, a good wrap helped cut down the radiant heat soaking the bowl - and maybe helped keep a little heat out of the cylinder itself. It also helps with keeping my right leg from roasting, so bonus!
Very good point. On one of my Harleys the exhaust is right near the oil tank. And it burns the shit out of my pants. But the main reason I want to wrap it is to keep more heat off of the other shit. For example the oil tank.
This is what i was wondering about as well. Let's say you have an air/oil cooled bandit with the headers straight in front of the block, would an exhaust wrap help cooling the block, since the moving air wouldn't be heated as much by the headers before hitting the cooling fans of the block?
I am mechanic who fitted the exhaust wrap for customer bikes, now I can explain the reason.
Thank you
Best explanation so far.. scientific, but simple as well.. now, I don’t hesitate to wrap my motorcycle exhaust.. Thanks, Man...👍🏼👍🏼
because it covers a multitude of sins and rust
Wow just watch this as I am investigating wrapping my 1997 Kawasaki VN800 after converting to a bobber and wanted to understand the pro's and con's and watched other vids but yours was excellently presented easy to understand well done.
Doing exactly the same to my 98 right now. Complete rebuild from frame out, and I'm planning to wrap.
This appears on my recommendations since weeks. Now that I opened it finally I hope youtube is being satisfied at last and stops recommending it to me.
omg you literally replied to every question in the comment.
you are a good man
yeah but not this one lol
@@dirtygarageguy 🤣🤣🤣
By far, this was the most beneficial video on that matter. Would be great if other "explained" videos are done the same way!
*Pro Tip:* Before wrapping your headers, scuff them up, prime them with high temp primer, then paint them with high temp paint. This will protect them from moisture/corrosion.
I just had mine ceramic coated first
My dad bought me that exact shirt back when i was in the 5th grade.
What ? You sayin he nicked it off you? Or did you give it to him?
Either he was terrible at picking sizes or you were a real porker
Droptuned 83 he is implying this grown man is wearing kiddie type shirt 🤣🤣
You still have it? I would like to buy it.
@@Group_Anonymous 20 quid and its yours
My thunderheaders are ceramic coated but still required shields to keep from frying my right leg. After a few years I removed the shields and wrapped them. I prefer the look and reduction of labor when I don't have to fool around with the shields.
To those that worry about corrosion just don't let the wrap stay wet on the pipes any longer than needed. They dry out quickly with minimal steam production once the engine is running. Been running wrap for years now. Glad to hear that it helped performance a small bit. Thanks for the clear explanation.
I enjoyed the exhaust scavenging explanation. You must be a scientist or engineer - much appreciated!
I wrapped the pipes on my scooter so I don't burn my leg
Did you feel/notice any changes in power or engine temp.?
There is a video here on you tube where a guy is using a hand held temperature sensor and it clearly shows that wrapped pipes are hotter than unwrapped pipes so your chance of getting burned is now greater. I was going to do the same thing till I saw this video.
@@bb2na473 there is definitely a change in temp. I have a wrapped thunder header on my bike and believe me you can feel the heat so much more after wrapping the pipes.
@@edkay3601 there is a difference between touching hot cloth and hot steel. Heat will transfer much faster to your skin from the metal than it will from the cloth. So even if the cloth is hotter, it won't burn you nearly as quickly as the metal.
If you don't get what I'm saying, think of the difference between air and water. You can put your hands in an oven at 350 degrees without getting burned, but if you put your hands in water boiling at 212 degrees, you'll get burned very quickly.
Me to
Thank you for boosting my confidence, I feel more intelligent, of greater interest, my looks improved, my speech ability stronger and my dress sense sharper than before, thank you.
Most comprehensive review of exhaust wrap
Excellent video for those considering pros and cons of wrapping exhaust.
Thanks Matt the only guy that did it that I have asked was on a v twin cruiser and he said it was to avoid burning his leg. I used to see a lot of two strokes with home made race pipes at club races and they were invariably black and metal. Didn't know it caused corrosion, thanks.
Excellent explanation thank you sir.
Clear explanation. Bon exposé, très professionnel !
Great video Matt, this series of Bike TEch is really good.
cheers dude, at least I'm doing something right - matt
Thanks for such clear and precise explanation. I just bought my first 125cc and the previous owner had wrap around the exhaust. Made me curious about its puepose.
Finally! I'm going to do the heat wrap. Awesome video man!
No worries dude - cheers for the comment
Thank you for the informative video that isn’t filled with bullshit blah blah, theatrics and annoying music.
There are people who look into TH-cam for information and testing, or even instructions on how to use a product or want to know their experiences using it and the down sides.
Sir, you have delivered, enough said....
Great video, i'm gonna mummify my exhaust it looks badass!
You're a cluey fella. Keep up the videos, perhaps one where you pull apart different 2stroke japanese power valves and explain each. I really enjoyed the Kx series.
Very well explained. Thank you
Excellent video! Very informative.
Clear and well presented. Thanks.
Very Very well said
thanks for the comment dude - matt
loved the explanation mate!
Very well detailed explanations! Thx u
I like the looks of the wrap and I think it's more appropriate for me than the ceramic, I do ride it on dirt/mud and rocks, so the protection is the most important for me.
Tbh I like the wraps on bobbers and didn’t know the purpose of them until now, thank you and now I might wrap mine when I build my bobber
Thanks for the explanation! Great presentation.
Cheers dude, but you should see the outakes, the amount of times I get tongue tide is amazing
I just subscribed after watching a few vids, very knowledgeable and easy to understand and easy to listen to....well done....
Really great video. I did wondered why people wrapped exhaust other than for looks. A brilliant explanation. I have to say I do like the look of exhaust wrap.
at 1000 rpm the engine has 500 explosions inside the cilynder. That's very fast
@@viarnay -Could be one historic reason for general aviation, those with internal combustion, having a few issues contacting dirt... more often than planned ;}
Reason most people wrap... Dented pipes! 😂🔰
Very good explanation and subbed.
you rocked it on the explanation buddy!
Very well done, love the white board support
Thanks for the comment dude, happy you liked it - matt
Awesome tutorial/explanation for folks like us Matt. Nice one. Ride safe mate.
you to mate - matt
Give us a shout if you're going past Nottingham... would love to pick your brain!
Brilliant vid mate, glad I found this chanel
Beautifully said thank you
great video matt! well said.
Thanks - matt
Skottie delago does anyone know if you can wrap it with a heat shield on ?
Wrapped today my RoyalEnfield look awesome
send me some pictures, they'll go in a video
Seriously
Thanks man , really helpful video
Just to toss in my 2 cents, in car applications it does a good job of keeping the temp down under the bonnet. I put in on my MG's header for this purpose. Also the protection from burns factor if I am adjusting carbs while the engine is hot.
Excellent video
Thanks
I had a problem with wire harness melting from exhaust heat and the wrap did the trick.
I did the exhaust with wrap and used spark plug heat shielding (same make as the wrap) and works great.
The intake manifold stays cool as well witch doesn't help fuel milage but improves torque for when you have to hall 1000 pounds of tractor, rider, and equipment up steep hills👍
The grin at 6:34 "melted leather" - priceless! Great explanation.
Excellent explanation
Points taken Sir..thanks for the thought..Cheers..
No worries mate thanks for the comment
This was super helpful, thanks pal.
Exhaust scavenging 101. Thus why small header opening and exhaust getting bigger towards end to help speeds and hopefully create small vacuum before intake opens. Heat shields may work in some cases to block heat. My 360 has wrap so i don't burn my leg. Great video.
Here in Vegas it never rains so maybe nice here. I could see how on the coast with high humidity and frequent moisture that it could ruin pipes over time. Long live the Vegas riders!
Awsome vid man! Great explanation, keep it up!
thanks for the comment dude
Very well explained.good job sir.
I had exhaust wrap on my 125, I painted the exhaust with VHT paint first and cured that, then I applied the wrap, after a very wet and horrible year I removed the wrap as it started to go white from heat and found my exhaust looked just as good as when I painted it. I think a lot of people forget to paint or protect the metal, as said the wrap will hold water when not running and so on.
Exactly. Also, never put the bike to sleep if the wrap is wet. (Caught in the rain on the way home) Let the bike idle and the exhaust wrap will be bone dry in no time.
on my husq 510 i just did a double layer 25 cm long next to my leg. no change in performance but now i dont cook myself when im stopped at a traffic light... 3 years later and i havent had any problems
Vastiano Cara the power differences are so small you don't notice them. You can probably just notice them on a dyno
i dont know, never had it on a dyno. but anyway as you said difference too small to notice, apart from my leg :)
haha yeah :d dont get yourself burned! :D
Brilliantly explained
Thanks dude - matt
Great video. Thanks
Done a wrap once on a Yamaha XT225 I had but just on the first portion of the exaust. It looked awesome and people thought I had modified the engine somewhat (which I hadn't). The plus side for me was that it eliminated the heat around my right foot which in a hot country like Brazil, it's a big gain. Cheers and excellent video mate! Can't stress this enough. Love your work.
Cheers dude - matt
wonderful vid dude, I don't know if I want to do it now? never thought of the water retention thing before.
Very well explained. I had a 500cc Scooter where the frame would get incredibly hot in summer on long rides. Suddenly you would loose power and had to wait for it to cool down again. I found out that the exhaust was heating the frame and the frame heated the ignition coil. Wrapped the exhaust and the problem went away.
Jeez!! That was a great vid!
Very informative.
Excellent description...could you continue the explanation about speed of the sound wave/efficiency of scavenging, with respect to other aspects of the exhaust...mainly the impact on scavenging of removing or downsizing the cat, and the impact of pipe diameter? That’s the age old problem many people try to solve to increase power (along with tuning the length of the exhaust). As it’s possible to buy E marked cats that are much smaller than OEM, and which fit inside the diameter of the header pipe, it’d be interesting to know the impact of removal or downsizing on scavenging : )
Prof. Cox of the motorbike world. Nice job.
says the dude sporting a 10 year old's cowlick in this very video.
Great for remote turbo setups on cars, keep that gas hot and spools faster, same with turbo blankets.
Thanks Matt, very interesting video. I only can add that this thing is cheap and reversible; and it doesn't make any bad to the bike; so if you want to try it then try it, in any moment you can take it away. Regards from Argentina
The main practical reason to use exhaust wrap is to mitigate heat soak. In cars, wrapped headers will reduce underhood temps, which can then result in more power by allowing you to advance timing without incurring detonation. In turbo cars, cooler temps can allow you to reliably run higher boost.
On motorcycles, the exhaust pipes often run by the oil pan, your legs, and other things that work better when not cooking. If your bike is air-cooled, keeping hot exhaust gases away can open up similar tuning opportunities as with cars.
Thank you for making sense.
so i watched a coupla more of yer vids, this one included, and they were very good. i also watched a vid by another fella and now i know about the "war". i have subscribed...
forrest crabbe what war?
Great video. I'm doing a ground up rebuild on my Vstar after laying it down and exhaust decision was in the air.. Gonna wrap for looks and I don't wanna drop half a K on some new V & H shortpipes ATM. Plus that whole cruiser with hot melty pipes thing does suck..
Another good reason for exhaust wraps in this day and age is that the catalytic converter is more efficient at higher temperatures, so you want the exhaust gases delivered to the cat to be maintained to (as far as I remember) about 375 degrees C.
A wrapped exhaust system may have more back pressure due to the fact that the exhaust gases remain hot longer. As the gases cool, the exhaust gas contracts, flowing more freely out the pipe.
Exhaust pipes on turbo systems are rarely wrapped because it causes too much heat to be retained in the exhaust system, causing the turbocharger center section bearing to fail or the oil to coke up.
Nice one! Clear explanation. Subscribed sir! Any videos on fixing RG500 ignition coming up? No spark on mine!
Excellent content. Subbed!
Very good video. Thank you!!
The truth is it's most often done on street bikes to cover old corroded pipes. Before wrapping became fashionable the usual, and effective way to cover up old shit was barbeque black flat black paint. My reaction to fashionable mods supposedly done for performance is "dyno slips before and after or fuck off". You can measure everything an engine does.
Wrap is quick and cheap. Having old pipes blasted then ceramic coated or spray metallized is not cheap for most owners.
I've peeled enough of it off customer bikes to have no fondness for it, but if you are selling a motorcycle it can tidy things up.
What effect would wrapping have on the sound/noise level on a n open (absorbing type ) silencer if any. BTW I like your new format
m8 very well done!!!
Thinking about doing this on my Pan 1100 downpipes. Reckon I'll get some heat paint on first though and then silicone spray to "seal" them.
Very good video, well done , I don't even own a bike.......but when I get one , I'll wrap the pipes :)
Nice job!
Great video.
Do exhaust reverson cones work?
Wrapped my pipe to not melt any more winter clothing :). I think it looks good on the on my bike, scared to take it off and look under the wrap though ahah:p
Much appreciated sir,
I always thought wraps were just to prevent burns to the leg haha, I don't like the look of it but the paint on my pipes were damaged in the post and the seller took no responsibility so I am thinking of wrapping to cover it up.
cast iron exhaust also insulates the heat for savaging.
Great explanation. My MR2 currently has wrap and it's all falling off. Perhaps I just remove what's left, and have done with it. As a personal thing, I think exhaust wrap looks horrible. As I final note, I am getting up 70, and was a Rocker, Cafe Racer guy. I never ever saw anyone have exhaust wrap on their bikes. Maybe an American thing, I don't know, but not Cafe Racer.
Great explanation!
But what happens if I wrap my 2 stroke exhaust with it?
It's been a while since you've done this video. Did you wrap and unwrap an exhaust, and make a film of it?
Going to wrap the exhausts on my Guzzi great explanation think it would look good on my V9 Bobber is it best to overlap by half or a third if sumone could reply ide be most grateful .😀
P.S some RC boats with 2 strokes have water cooled exhausts some use a wrap. For an engine with crazy porting and a narrow power band presumably the wrap is too stop the pipe from detuning?