Grinding welds in stock exhaust

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mik_str
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Grinding welds in stock exhaust

Post by mik_str »

Greetings from the Great White North (a.k.a. Canada) :)

As my bike sits hibernating, I was thinking of pulling the stock exhaust header off (seeing as how I can't seem to find a full system for a reasonable price anywhere) and grinding all the inside welds down so as to improve airflow. I did a partial job at the rear collector (welds only, I did not mess with the "obstacle" as per the recommendations from Sir Roger) but didn't want to remove the system to go any further. With the bike sitting idle, I thought it might be a good time to finish the job (all welds) and then finish off by getting it ceramic coated. Has anyone tried this? Is it worth doing? It seems to me that if it's worth working over the ports to improve flow, it should also be worth doing it to the exhaust (since any weld whose surface rises into the exhaust tract effectively creates a restriction and turbulence, thereby reducing flow and choking the engine). Obviously I am not expecting massive gains but a free hp or two would be nice Your thoughts?
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Squiffythewombat
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Post by Squiffythewombat »

Timbo wrote:Sounds like a lot of hard work for not much gain. Good luck to you, let us know how it works out.
bit like your post count then.. :D :D :D :D :D :D :D
Squiffy_The_Wombat

Eagles may soar but wombats dont get sucked into jet engines!!
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Squiffythewombat
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Post by Squiffythewombat »

Lol...your just jealous! :)



(doer? mate, youve not seen the lady wombats round here!)
Squiffy_The_Wombat

Eagles may soar but wombats dont get sucked into jet engines!!
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sirch345
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Post by sirch345 »

I agree with Timbo, a lot of hard work. I wonder though if it is possible to get to all of the welds to do that :?: Even if you can I doubt you'll notice very little difference, if any, but I understand the principle behind the plan.

Good luck if you do go ahead and do it, keep us posted :!:

Chris.

PS. I can't advise you on ceramic coating :!:
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Kitch
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Post by Kitch »

Wouldn't it be so much easier to fit new downpipes?

Several folks make them for the Storm, in stainless from somewhere or swish gas flowed systems from Akrapovic.

Treating the original pipes is obviously cheaper, but once you factor in ceramics and stuff, it wont be much of a saving and probably wont give as good results as a proper designed for it job.

Harris do a full on mutts nutss ceramic exhaust system that will fit. For £1100 (CA$2178)

http://www.urbaneracing.co.uk/product/a ... .htm?cid=9

Supremely expensive, but not so bad when an Akrapovic exhaust and headers is similar money. (only posted really cos I love those Harris pipes)
Voted most likely to be found dead in park bushes following an act of autoerotic asphyxiation.
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LotusSevenMan
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Post by LotusSevenMan »

Imagine being stalked by a Wombat!!! 8)

Nice lookin' system that FSM!!!
"Only ride as fast as your guardian angel can fly" !!!
mik_str
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Post by mik_str »

Thanks Mike...nice piece there :) SEnd me the contact info if you could (m_p_garneau@hotmail.com). I sent an e-mail to J.A.C. a few days back to enquire into their 2-1 system but have yet to hear back from them.

cheers
Druting
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Post by Druting »

Hi, i've only just seen this. Would it be possible to get the builders details also?

I've got a couple of questions about it, how easily does it fit to the engine and will he need my existing downpipes?

Thanks
Dru
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