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· I bang metal
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2,857 Posts
i would wrap the four individuals as far as you can then wrap backwards about an inch and tie it off, then start where you left off with the individuals and wrap them all as one. Thats what i would do and thats what i see done most often.
 

· ☢
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5,775 Posts
im not experienced with wrapping at all.. but what is the point of it?
it looks badass!

but it keeps the headers hotter, and the exhaust gasses remain hotter. hotter = less dense, which = faster moving gasses that help evacuate the cylinder, which frees up a little hp
 

· Dr. Evil
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376 Posts
there are a number of ways to do it. I would suggest starting with each individual header. one pipe will be wrapped by itself, then the second will continue past where the header pipes come together so you can't see that they are separate. if that makes sense.
Also, I recommend soaking the wrap before you wrap it, because it allows a tighter wrap and follows curves better that when it is dry, then when it does dry it shrinks slightly and you get a really tight wrap.
as far as how to bind it to the pipes, people sell metal sort of zip ties for this. you can go that rout and pay somewhat more then I think they are worth, but the other option is to get some wire and just wrap around the start point and twist the ends like a twisty tie. a couple of them and it wont go anywhere, but there is the chance that it might come off.
you can check out my build page for an example. there are also a few other folks on here that have good examples if you use the search you should probably find some good posts.
good luck to you, and I would recommend using gloves if you soak the wrap cause the dye will stain your skin. :shocker:
 

· www.poltart.com
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235 Posts
Discussion Starter · #7 ·
Thanks for the tips guys!


Heh yeah aside from looking bad ass apparently it helps cooling. I have a 600rr stunt bike and I am making a few changes such as wrapping headers, adding another fan, swapping coolant to make sure it stops overheating when I stunt.
 

· Fear the Reaper
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408 Posts

· Plastic Porno
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70 Posts
it looks badass!

but it keeps the headers hotter, and the exhaust gasses remain hotter. hotter = less dense, which = faster moving gasses that help evacuate the cylinder, which frees up a little hp
Agreed it does look tits, but maybe its my lack of knowledge and trying to learn more, but does it really make that much of a diff on a bike? The header is exposed and constantly cooled by passing air. I can see it mattering more in a cage, as the whole engine is enclosed and the header temp raising the temp of the engine compartment, thus heating the intake charge through the intake manifold. Because the header is wrapped and hotter, does less dense air really move THAT much faster at higher RPMs? Or is the gain marginal? Anyone have a dyno graph to relate?
 

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5,775 Posts
I've come this far I might as well go on with the Exhaust wrap... Exhaust wrapping your headpipes can dramatically alter the gas flow & even the reversion pulse waves, especially beneficial for most stock exhaust headers when used with a slip-on as it tends to allow you to run much stronger in the mid-range (after rejetting). It keeps the exhaust gasses hotter longer which makes them easier to expel out the pipes. We all know that the hotter something is the easier it flows... problem is it is extremely difficult to get the jetting right after the wrapping mod & usually require main jets & needles outside the typical range of off the shelf jet-kits... Also wrapping a Stainless Steel headpipe will rapidly deteriorate the pipe & if you wrap a ceramic coated header, it will turn to ash within 3 months! So in the event any of you follow up on this stuff I only suggest wrapping the stock headpipes due to their heavy construction... The extra heat generated inside the pipes by the wrap will eventually destroy the stock headpipes too, but you can always find stock headpipes for sale just hanging in someone's garage... & to me the added useable horsepower (mid range)is worth replacing the stock headpipes every 3 or 4 years (if you even keep the bike that long) NOW THE KICKER: Although I have experienced gains by doing this mod on many different bikes with inline motors, I have not experienced any appreciable gains with it on the RC51. Now to clarify that statement let say that my first attempt was without the benefit of the PCII to alter the fueling & there were zero changes registered on the dyno with the addition of the exhaust wrap. I do have intentions of trying it again this summer & I'll post my findings at that time. Let me also say that many RC51 owners have found it very beneficial to wrap the rear headpipe where it is in close proximity to the rear shock in an effort to keep the shock cooler from radiated heat & reduce fade. On a related subject & since I am copying most of this from posts I had made on one of the many online forums I frequent earlier today, let's discuss Jet Hot coatings: I do not have any actual experience with the jet-hot coating & the reviews I get from credible people that have had it done are diverse to say the least. I am relatively sure it is a worthwhile investment as in theory it should work great, but for me it's hard to beat a $50 roll of exhaust wrap & maybe some new jets & needles...

stolen from rc51.org
 

· Plastic Porno
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70 Posts
^^Great Find EatAB, and gracias!
That passage pretty much sums up that the higher revving I4 benefits from the wrap, as opposed to the lower revving twins. Thats exactly the answer I was looking for. I lernd sumpin!
Rep for you!:thumbsup:
 

· Triple nutter
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765 Posts
in my experience, you will def need more than 50'. i have a 3 cyl. bike-hence 3 header pipes-and used 75' total.
 
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