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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #1  
Old 14th June 2019
883sporty03 883sporty03 is offline
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Default Question for RB racing exhaust guys/gals

Installing on a 883 2003 and my exhaust flanges do not sit flush with the head., The length of the RB with the metal gasket from flange to end pipe is about .7 inch the stock one was about .4 inch. Clips are in correctly and so are flanges. So this extra distance is giving a problem. if anyone has this RB LSR 2 into 1 let me know how your install went and if you had to cut. It's almost impossible to torque it without bending the flange seems like
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  #2  
Old 14th June 2019
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Hi.. Have you contacted RB? Mine was on the bike when I got it.. But I have mailed them twice with questions and they mailed me back the next day. Very helpful. It's got to be something simple. Hope you get it sorted
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  #3  
Old 14th June 2019
883sporty03 883sporty03 is offline
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Sent pics and emailed so waiting. Can you look at yours and check if your flanges are flush to the head?
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Old 14th June 2019
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You have to loosen and move the pipes around to start bolting them on. Your pipe is for a rigid mount, right?
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883sporty03 883sporty03 is offline
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yup 03 rigid Did slowly get these together then slowly start tightening. Just curious if other RB's have the longer pipe between flange and end pipe. That .3 extra to me should be cut as if a perfect length as the flange hits the head flat and you torque. If extra space the flange will bend. Maybe I just got a set out of spec
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I'll have a check next time I get to my bike.. seajay has made a good point. I'm taking mine off this winter for blasting and a respray. (well rusty) I'll be tightening from the heads back. You haven't tightened the rear mounting first have you? That could pull it away from the heads
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Old 14th June 2019
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https://ibb.co/rvHn167

https://ibb.co/pKS8c09

try these links for stock vs RB
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Ah! ... I think I understand now. I will double check when I get to my bike next. Don't keep it where I live because I'm in a flat (apartment?) If I remember right though... The flange doesn't fit flush with the head and seems a bit thin with a slight bend when tightened.
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Also if any RB people had that end cut for a better fit lmk know as I might do that if I can't get the flange to torque without bending it.
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Old 15th June 2019
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Dont they use a special gasket ?
Are the flanges supposed to be flush ?
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