wrapping your headers good? - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 14 (permalink) Old 07-09-2012, 06:23 PM Thread Starter
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wrapping your headers good?

Heard that wrapping the headers of a vtwin hold in heat and also help with HP. Is this true ? Or does any one think its a good idea
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post #2 of 14 (permalink) Old 07-09-2012, 07:02 PM
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Maybe for racing- I don't know. But I've wrapped headers before, and the heat retention after shutting off the engine, will deteriorate the metal pretty fast. The surface gets flakey and integrity suffers fast. And the damn asbestos or glass -whatever it is- can also deteriorate and start chaffing off even when you keep it painted with the recommended coating.

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post #3 of 14 (permalink) Old 07-10-2012, 08:14 AM
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From LDH's www.rc51.org in MODS section
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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...


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post #4 of 14 (permalink) Old 07-11-2012, 04:10 PM
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Have them ceramic coated instead. Can be done most places for under $200. You can have a choice of black or silver by most shops. Looks good and lasts for a very long time.

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post #5 of 14 (permalink) Old 07-12-2012, 10:32 PM
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If the idea is to keep heat off the rear shock, wrap the shock with heat resistant material that flexes to keep out the heat. Use exhaust protector of the "plate" design style, on the selected header pipe, to deflect heat. I use this type (from Targa) with holes in it to keep my size 45s off the Sato pipes.

Last edited by rc51 Red Rider; 07-12-2012 at 10:34 PM. Reason: Clarification
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post #6 of 14 (permalink) Old 07-13-2012, 08:22 AM
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From my observation I can confirm that ceramic does increase the temp of the exhaust gases. It does keep heat from radiating thru to the oil sump and the shock. After coating the tips of my slipon cans have turned that nice gold color. Never happened before. You also notice the warm flow when you walk behind it when it is sitting at idle. BTW. mine is not the Jet- hot brand stuff. Local coater did mine.

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post #7 of 14 (permalink) Old 07-13-2012, 09:19 AM
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Wrapped mine with some header wrap all the way to the muffler. Very poppy and a few backfires now. Is it related?

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post #8 of 14 (permalink) Old 07-13-2012, 12:17 PM
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Any chance you knocked them loose wrapping. Popping sometimes means air is getting into the pipe.

'04 Nicky Hayden

Flapper/PAIR Mod-Ladybird Full Ti Moto-GP -w- Long Cans-Proton Flushmount LEDs
HotBodies Undertail-Tyga CF Hugger-HEL Lines
Custom plate mount w integrated LED brake light
15/41 gearing-PCIII USB-Speedohealer-Carbone Lorraine Pads
Spencer Seat mod-Ceramic dual coat headers


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post #9 of 14 (permalink) Old 07-13-2012, 01:28 PM
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Rear header bolts keep comming loose. Is there a threadlocker that can hold up to the heat?
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post #10 of 14 (permalink) Old 02-27-2013, 10:58 AM
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I was thinking about wrapping my pipes as my heal melts on the pipes!

I did run the wrap on my 2 stroke, noticed no gains and removed the stuff to find the pipe was a mess underneath! I've not seen any used on a GP bike so I guess there is no gain!
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