
01-19-2010, 11:14 PM
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 | Senior Member | | Join Date: Dec 2008 Location: Winston Salem, Greensboro area of North Carolina
Posts: 130
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Re: S & S 106 kit Quote:
Originally Posted by fasteddy i have 2008 w/ 96", am thinking going 106 " S&S, already have Rinehart,power commander, heavy breather, any thought's ?????????????? | I ran the 106 ci through a MACH index calculator. For those that don't know what a MACH index calculator is, it's a calculator that determines what the maximum RPM that the engine will make HP.
A 106 ci engine using stock heads and stock valves, will need a .650" cam for the engine to make HP up to 5500 RPM. In other words, the engine will stop making HP at 5500 RPM if you use a .650" lift cam.
If a .590" lift cam is used, the engine will stop making HP at 5000 RPM.
If you increase the intake valve size to 2.08", and use a .600" lift cam, the engine will be capable of producing HP up to 6,000 RPM.
Basically, when you increase cubic inches, you need to increase intake valve size and/or valve lift.
I have a customer that I have built the engines in all of the bikes that he has owned. A couple of weeks ago he purchased a new 2010 SE Street Glide. He rode it from the dealer straight to my shop. He gave me X amount$$$ to do what I want to it. Ill post the results in a couple of weeks.
I did a "before" dyno run this week. This is bone stock SE 110ci.
Notice where the HP peaks
__________________ Hemrickperformance.com 2007 Ultra Classic
103 ci, SE Heads, 57mm T/B,
TW-7H, Pro Pipe, Nitrous
170+ HP / 190+ TQ 9 Time Dyno Shootout Winner Nitrous Rules! |