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post #1 of 6 (permalink) Old 02-16-2016, 12:33 PM Thread Starter
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Stock Cylinder Boring

What is the most you can RELIABLY bore the stock Cylinder over stock?

2011 Road Glide Ultra, Andrews 57H, VeeTwin Performance street port, Big Sucker Intake, Rhinehart 2/1 w 4" muffler, Power commander V, Paugcho 17" bars, Stock seat recovered with leather, Michelin Comander II 140/80B front, Yokohama Envigor 205/60/16 rear. It's better on the dark side.
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post #2 of 6 (permalink) Old 02-17-2016, 07:13 AM
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3.937".
We've been boring the 88" to 98" since 2006, and 96"-107" since 2007 using our proprietary Wiseco/Cometic piston/gaskets kits.
We have 100's of those in service spanning Europe, all across the USA,(including Hawai and Alaska) Canada, Zew Zealand and Austrailia.
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post #3 of 6 (permalink) Old 02-22-2016, 09:57 AM Thread Starter
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Quote:
Originally Posted by Hillsidecycle.com View Post
3.937".
We've been boring the 88" to 98" since 2006, and 96"-107" since 2007 using our proprietary Wiseco/Cometic piston/gaskets kits.
We have 100's of those in service spanning Europe, all across the USA,(including Hawai and Alaska) Canada, Zew Zealand and Austrailia.
Scott
So will the 103 be a 107 at that bore Scott?

2011 Road Glide Ultra, Andrews 57H, VeeTwin Performance street port, Big Sucker Intake, Rhinehart 2/1 w 4" muffler, Power commander V, Paugcho 17" bars, Stock seat recovered with leather, Michelin Comander II 140/80B front, Yokohama Envigor 205/60/16 rear. It's better on the dark side.
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post #4 of 6 (permalink) Old 02-23-2016, 06:49 AM
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Yes it would.
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post #5 of 6 (permalink) Old 02-23-2016, 07:51 AM Thread Starter
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So what size pistons do I need for that setup. I am getting the 1.90 valves installed with the head work I'm having done.

2011 Road Glide Ultra, Andrews 57H, VeeTwin Performance street port, Big Sucker Intake, Rhinehart 2/1 w 4" muffler, Power commander V, Paugcho 17" bars, Stock seat recovered with leather, Michelin Comander II 140/80B front, Yokohama Envigor 205/60/16 rear. It's better on the dark side.
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post #6 of 6 (permalink) Old 02-23-2016, 09:20 AM
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Quote:
Originally Posted by BigNorm View Post
So what size pistons do I need for that setup. I am getting the 1.90 valves installed with the head work I'm having done.
Norm, buy the flat top pistons for the 107 bore and have your boring guy cylinder match each piston and mark piston front and back. That's all you need to know on size. Now Hillside can give you exact piston size. Most use Wiseco pistons and I think the size is 3.937

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