Thinking bout cams, mmmm maybe not
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
...it seems people are always saying you don't have to down shift as often with cams, but I like bangin through the gears and with my 103 with my bassani road rage 2/1 se air cleaner and the power vision I have no problem passing trucks or any cars on these crazy highways in California.
It's just I read all these threads about how you need cams to keep up with the pack and how much better your bike will be with them it's hard to ignore that.
The stock cams are called "smog cams" for good reason. The complete lack of overlap in the stock cams helps keep emissions down by making sure no unburned fuel escapes with the exhaust gasses. Unfortunately, it also severely restricts scavenging, and the ultra short duration limits power production.
Over the last several years, the moco has done a bunch of work for us. In 06, the heads were redesigned to flow better, and beehive springs allow for more cam lift. In 07, the stroker crank became standard, and in 2012, the big bore upgrade was made standard for almost all big twins. About all you have to do now is add a decent exhaust, cams and get a tune to have a great running bike.
A stage II 103 is an exceptionally good motor, really all most of us will ever need.
Over the last several years, the moco has done a bunch of work for us. In 06, the heads were redesigned to flow better, and beehive springs allow for more cam lift. In 07, the stroker crank became standard, and in 2012, the big bore upgrade was made standard for almost all big twins. About all you have to do now is add a decent exhaust, cams and get a tune to have a great running bike.
A stage II 103 is an exceptionally good motor, really all most of us will ever need.
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