Author Topic: Who is GOOD at MATH *Exhaust Pipe Wrapping*  (Read 12609 times)

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Offline JWilde

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Who is GOOD at MATH *Exhaust Pipe Wrapping*
« on: June 24, 2016, 01:36:03 PM »
I was never good at math.
My math teacher passed me cuz im cute...now handsome.
True story!
Im wrapping my pipes, for better or worse.
4 into 1 exhaust. Only wrapping to where they join the chrome part.
Each exhaust pipe is 2"wide and 21-23inches long.
How my wrap will I need? Is 50' enough?

The visual for the idea is the first pic.

My bike is the second.


Offline SKOL

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #1 on: June 24, 2016, 01:40:51 PM »
2πr = Circumference. Times that by inches in length and you'll be in the ballpark.

2 x 3.14 x 1 = Circumference

Circumference x Length = how much wrap you will need for each pipe.

Maybe use 1.5 for your radius, just to give yourself some extra leeway. Better to be long than short.

Offline flybox1

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #2 on: June 24, 2016, 01:47:09 PM »
Suggestions:
Prep the exhaust well.  de-rust and paint, to prevent more rust.  wrap will hold moisture.
Soak the wrap.  its easier to work with.
Wear gloves.  its itchy  :P
Wrap from above the collector up to the header on #'s 1,2,3 and secure with stainless zip ties. Do these first.
Wrap #4 last, since its visible and on the outside of your bike.... from the collector all the way to up to the top of the header...so it covers the collector, and hides the start hose clamps for 1,2,3.
Go for a long ride and burn-off all the moisture.   itll steam like youre on fire  ;D
« Last Edit: June 28, 2016, 11:07:33 AM by flybox1 »
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Offline JWilde

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #3 on: June 24, 2016, 01:55:02 PM »
Suggestions:
Prep the exhaust well.  de-rust and paint, to prevent more rust.  wrap will hold moisture.
Soak the wrap.  its easier to work with.
Wear gloves.  its itchy  :P
Wrap from the top of the header down to the collector on #'s 1,2,3 and secure with thin hose clamps. Do these first.
Wrap #4 last, since its visible and on the outside of your bike.... from the header all the way to where you want to stop...so it covers the collector, and hides the hose clamps for 1,2,3.
Go for a long ride and burn-off all the moisture.   itll steam like youre on fire  ;D

The wrap it titanium and Im told, it doesnt requrie soaking.

Offline JWilde

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #4 on: June 24, 2016, 01:55:47 PM »
2πr = Circumference. Times that by inches in length and you'll be in the ballpark.

2 x 3.14 x 1 = Circumference

Circumference x Length = how much wrap you will need for each pipe.

Maybe use 1.5 for your radius, just to give yourself some extra leeway. Better to be long than short.

Thanks but when I said I wasnt good at math i wasnt kidding. So how many feet of wrap do I need? That the answer im looking for lol.

Offline Davez134

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #5 on: June 24, 2016, 02:12:46 PM »
Need to know the width of the wrap you're using.

Offline JWilde

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #6 on: June 24, 2016, 02:40:39 PM »
2" width of wrap

Offline Davez134

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #7 on: June 24, 2016, 02:49:45 PM »
50' is plenty. Assuming you overlap around 1/8" per wrap, you would use a little less than 30' on the 4 pipes, then another 5 or so feet at the collector.
I was not a cute kid, so I had to be good at math I guess. ;)
« Last Edit: June 24, 2016, 02:51:41 PM by Davez134 »

Offline JWilde

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #8 on: June 24, 2016, 02:56:32 PM »
50' is plenty. Assuming you overlap around 1/8" per wrap, you would use a little less than 30' on the 4 pipes, then another 5 or so feet at the collector.
I was not a cute kid, so I had to be good at math I guess. ;)

Brains over looks wins every time.

Offline flybox1

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #9 on: June 24, 2016, 03:00:50 PM »
The stuff is going to move over time.  Tight wraps @ 3/4" +/- overlap is best so there is no separation.
50' is plenty.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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Offline Davez134

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #10 on: June 24, 2016, 03:05:31 PM »
3/4" overlap does sound better, I didn't think about movement. I just guessed at 1/8" overlap, never wrapped any before.

Offline 754

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #11 on: June 24, 2016, 03:10:59 PM »
You have to figure out pitch or lead for each time around.
How far it advances along  the pipe gets calculated. Into the length.
So 4 times around in 6 inches is 16 times in 24 inches.. And each wrap is approx 1.7 x 3.14 inches long.

Jumped a year in math in high school, was take ng grade 12 math when I was 15 yrs old....
Alas though As easy as math 8 was, the 12 just did not work for me..
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Offline Scott S

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #12 on: June 24, 2016, 03:29:22 PM »
Suggestions:
Prep the exhaust well.  de-rust and paint, to prevent more rust.  wrap will hold moisture.
Soak the wrap.  its easier to work with.
Wear gloves.  its itchy  :P
Wrap from the top of the header down to the collector on #'s 1,2,3 and secure with thin hose clamps. Do these first.
Wrap #4 last, since its visible and on the outside of your bike.... from the header all the way to where you want to stop...so it covers the collector, and hides the hose clamps for 1,2,3.
Go for a long ride and burn-off all the moisture.   itll steam like youre on fire  ;D

 This is pretty much exactly how I've always done it. Wetting it allows it to A) stretch a bit when installing, and B  ) shrink for a tight fit when it dries.
 It helps to have a friend or an extra set of hands, too.

 And, yes...it's very itchy,  and it will smoke and stink for several rides.
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Offline Scott S

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #13 on: June 24, 2016, 03:30:49 PM »
3/4" overlap does sound better, I didn't think about movement. I just guessed at 1/8" overlap, never wrapped any before.

 I always did it somewhere in between; about 3/8" - 1/2" overlap. I guess it's just personal preference. Pick a width that you like and think looks good.
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Offline Scott S

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #14 on: June 24, 2016, 03:39:46 PM »
Oh, and there's absolutely NO WAY to do it on the bike. You have to remove the header. Order four new exhaust gaskets when you order the wrap.
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Offline JWilde

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #15 on: June 24, 2016, 10:36:57 PM »
Oh, and there's absolutely NO WAY to do it on the bike. You have to remove the header. Order four new exhaust gaskets when you order the wrap.

Im doing it on the bike and it will look great

Offline mickvain

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #16 on: June 24, 2016, 11:42:29 PM »
I personally would get enough wrap. Too little isn't enough. Too much and you'll have some left over. I'm sure it will look great.

Offline BomberMann650

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #17 on: June 25, 2016, 02:12:58 AM »
Oh, and there's absolutely NO WAY to do it on the bike. You have to remove the header. Order four new exhaust gaskets when you order the wrap.

Im doing it on the bike and it will look great

Are you sure your hands will fit?  I mean, I tried patching holes in my old F header and had a #$%* of a time.

Offline Scott S

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #18 on: June 25, 2016, 02:44:46 AM »
Oh, and there's absolutely NO WAY to do it on the bike. You have to remove the header. Order four new exhaust gaskets when you order the wrap.

Im doing it on the bike and it will look great


 Good luck with that.
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'81 Yamaha XS650

Offline flybox1

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #19 on: June 25, 2016, 07:20:04 AM »
Oh, and there's absolutely NO WAY to do it on the bike. You have to remove the header. Order four new exhaust gaskets when you order the wrap.

Im doing it on the bike and it will look great


 Good luck with that.
We're just trying to save you headaches and do-overs JW :-\
But, have fun.  Ill put some popcorn on.  ;D
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline danyo

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #20 on: June 25, 2016, 09:15:28 AM »
Noooooo, please don't leave us. What we'll do now??  This forum will never be the same without  you. I'm not telling you what to do, I'm just asking. You helped us a lot! Ppl need your help! Maybe you can go with my son to math classes so he can pass. We're not  cute that much like you are!!!!

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Offline BomberMann650

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #21 on: June 25, 2016, 01:00:43 PM »
Noooooo, please don't leave us. What we'll do now??  This forum will never be the same without  you. I'm not telling you what to do, I'm just asking. You helped us a lot! Ppl need your help! Maybe you can go with my son to math classes so he can pass. We're not  cute that much like you are!!!!

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Play nice Danyo.

Offline Powderman

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #22 on: June 25, 2016, 03:23:22 PM »
Why do they call it "Titanium" when it has no connection to titanium at all. Did you ever try and find on the manufacturers sites what actually benefit you will get from wrapping your pipes, none have those results because they are usually negligible at best. Titanium wrap is made from crushed lava and and not fiberglass like others, it doesn't shrink and doesn't soften from being wetted before installation.
But to answer your question:
https://www.designengineering.com/nitrous_calcs/wrap_calc.html
« Last Edit: June 25, 2016, 03:27:23 PM by Powderman »

Offline SOHC4 Cafe Racer Fan

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #23 on: June 25, 2016, 03:44:41 PM »
50' is plenty. Assuming you overlap around 1/8" per wrap, you would use a little less than 30' on the 4 pipes, then another 5 or so feet at the collector.
I was not a cute kid, so I had to be good at math I guess. ;)

Brains over looks wins every time.

Lucky for David, he has looks AND brains, plus hot wife, cute baby, amazing bikes and humility.  And he's a firefighter.  His simply kicks ass.


« Last Edit: June 25, 2016, 03:49:33 PM by CB750 Cafe Racer Fan »
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Offline riverfever

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Re: Who is GOOD at MATH *Exhaust Pipe Wrapping*
« Reply #24 on: June 25, 2016, 04:37:04 PM »
Well.....I drank good whiskey last night after driving a sexy car all day.
http://forums.sohc4.net/index.php?topic=127186.0

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