Header Pipe ?
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Joined: Apr 2016
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From: Central PA
Header Pipe ?
Looking to replace the header pipes on my FLHRXS this spring. My question, does it make a difference on which pipe crosses over? Are there any performance gains either way?
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Joined: Jan 2008
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The crossover pipe on the stock bike is bad. So if your going to upgrade to a new header pipe you will have to see what is used, as they may well not all use the stock one. If your looking for one that fits with the stock heatshields I would recommend the one from Fullsac.
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Joined: Jan 2008
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If your going to change the header pipe you should change the crossover away from the stock one. The stock pipe has a "T" joint where the cross over connects and a "T" joint does not flow well. Look inside of the stock pipe and you can see how poorly they are made. Great for production cost reduction, not great for performance. Same goes for the crossover pipe. If your changing, just to change and not looking at performance then it doesn't much matter.
HD EFI Guru
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If you have done that take a look in the pipe and look at where the cross over sticks in. Some stick into the pipe 1/2 or more while others are less. Take a long grinding bit and trip it off flush with the ID of the pipe is about the best you can do with it.
Tourer
Joined: Jun 2010
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From: Alabama
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Joined: Apr 2016
Posts: 56
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From: Central PA
I am replacing the entire exhaust. I have seen pipes that cross over(guess it would really be under) from the front cylinder and also from the rear cylinder. Which is better, or doesn't make a difference?
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The pipe orientation and overall design very much makes a difference, this varies greatly based on the engine configuration and power level. Tell us a bit about your bike and combination and we will be able to offer the best advice and info.
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
