Re: Identify Sportster Cams?
Posted: Mon Nov 06, 2017 5:46 pmWhat your aiming to build is what we call a “happy Motor”. That basically means all of the combined parts work correctly in conjunction with each other to produce the desired out come.
I tell people they need to decide what;s most important to them first. There's a huge difference between full race engines and stockers (or less than stock). And there's a huge difference within race engines depending on what type of racing is to be done.
Street engines with a bit more “pep” are race engines. But built for different purposes than full on racing engines, so different goals mean different components.
If I had a set of minus minus cams and Branch ported heads I would save them for a stroker project. They will not work for what you want with this engine.
Stock Sportster heads flow well enough for street riding as they are. In fact I believe the ports are too big for stock displacement. Going for more air flow will hurt in exactly the area you will want the engine to shine.
2 inot 1 exhausts are always the way to go. For performance at any rate if not looks. If you have a set of good P cams already I would use them. The PB's are a little better but harder to find. Not worth paying $400 for. There is no difference between a fixed mag and an advance/retard setup though that will make life easier when it comes to starting.
Carburettors are always a debate. I think the S&S Super B looks the part on an old CH, is as simple as a rock, are cheap to buy and easy enough to tune. If you buy one with a Super bowl it will have an accelerator pump which helps a lot with starting the beast.
For a street engine people normally want the torque down low. That means smaller ports and higher compression ratios. So the Branch heads and minus minus cams don't really fit.
The engine I just described will make over 60 BHP if built correctly. It will not embarrass you at any time and will be fun to ride.
I tell people they need to decide what;s most important to them first. There's a huge difference between full race engines and stockers (or less than stock). And there's a huge difference within race engines depending on what type of racing is to be done.
Street engines with a bit more “pep” are race engines. But built for different purposes than full on racing engines, so different goals mean different components.
If I had a set of minus minus cams and Branch ported heads I would save them for a stroker project. They will not work for what you want with this engine.
Stock Sportster heads flow well enough for street riding as they are. In fact I believe the ports are too big for stock displacement. Going for more air flow will hurt in exactly the area you will want the engine to shine.
2 inot 1 exhausts are always the way to go. For performance at any rate if not looks. If you have a set of good P cams already I would use them. The PB's are a little better but harder to find. Not worth paying $400 for. There is no difference between a fixed mag and an advance/retard setup though that will make life easier when it comes to starting.
Carburettors are always a debate. I think the S&S Super B looks the part on an old CH, is as simple as a rock, are cheap to buy and easy enough to tune. If you buy one with a Super bowl it will have an accelerator pump which helps a lot with starting the beast.
For a street engine people normally want the torque down low. That means smaller ports and higher compression ratios. So the Branch heads and minus minus cams don't really fit.
The engine I just described will make over 60 BHP if built correctly. It will not embarrass you at any time and will be fun to ride.