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Old 11-21-2013, 07:31 AM   #1
mopulga OP
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Joined: Feb 2009
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Oddometer: 246
RitmoSereno Exhaust

Hi all,
Does anyone know what type of exhaust chamber ritmo sereno uses on many of his builds?



I cant get enough of what this builder does. Amazing stuff.
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Old 11-21-2013, 10:23 AM   #2
Rob Farmer
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Moorespeed make a similar looking exhaust. Available in different lengths to suit your needs

http://www.moorespeed.co.uk/bmw-engine
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Old 11-21-2013, 03:39 PM   #3
supershaft
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Someone else makes the same basic setup with huge graceful bends versus the two sharper ones. Sharp bends do cost power although I am betting the shape and placement of the collector effects the setup more than anything. After the collector that setup is slightly tapered. From what I have seen, I would be more interested in a taper right after the header comes out of the head. Almost all headers nowadays have a rather abrupt taper there excepting most all airhead setups. The post port taper has to be for real since most everyone is doing it? I have never helped with that question when I have been working on airheads around dyno's.
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Old 11-21-2013, 04:05 PM   #4
SculptD
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So, for example, one might taper from 38 to 40mm right out of the head? In order to benefit...what? Top end power, I imagine, at the expense of all else?
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Old 11-21-2013, 06:42 PM   #5
supershaft
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Quote:
Originally Posted by SculptD View Post
So, for example, one might taper from 38 to 40mm right out of the head? In order to benefit...what? Top end power, I imagine, at the expense of all else?
Look at pretty much most all new headers stock or not on most all new bikes. They are tapered a lot more than that. Top end at the expense of all else? I doubt it since many a bike with tons of low end grunt comes stock with headers like that.
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