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Discussion Starter #1
As the title says, what if victory decided to change the 106 to a water cooled pushrod engine? The engine height could be lower. I don't see the advantage of using an overhead cam engine.
 

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push rods is old out dated technology. all your high end expensive sports cars use overhead cams. you can use a program to advance timing or retard while you are running.
 

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push rods is old out dated technology. all your high end expensive sports cars use overhead cams. you can use a program to advance timing or retard while you are running.
Don't tell that to Hemi and small block owners. Ever hear about the Motus Gibson? OHV is anything but dead.
 

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Discussion Starter #4
push rods is old out dated technology. all your high end expensive sports cars use overhead cams. you can use a program to advance timing or retard while you are running.
Just because they use it, doesn't make it better. Overhead cam is also dated technology.
 

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Just because they use it, doesn't make it better. Overhead cam is also dated technology.
There's really not much new mechanically under the sun. New developments seem to be digital ones. IMO many are put onto cars and bikes just coz they can, not coz they are needed or wanted, like keyless ignition.
 

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overhead cam engine can run faster without worrying if the valve train will float and put a valve into the piston. the height of the motor is the same there really is no difference, unless you really want to back to a flat head Ford motor. There is a good example of wasted horsepower. Could not get enough air and fuel into the engine.
 

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Yup solenoids operated valves ... I think it was covered on another thread ... Good stuff hey ?? Austrian ingenuity ... Cool hey ??

Edit; Oups Swedish ....
 

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y reason companies use push rods; including car companies. Is because the knuckle draggers of this planet can't live without them.
Pushrods have more parts to fail, every opening event is slightly different, create engine packaging issues, and make multi valve sytems way too complex
 

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Discussion Starter #11
overhead cam engine can run faster without worrying if the valve train will float and put a valve into the piston. the height of the motor is the same there really is no difference, unless you really want to back to a flat head Ford motor. There is a good example of wasted horsepower. Could not get enough air and fuel into the engine.
The height of the motor is different, especially in a v8 or v6. While it can run faster, our Vic's don't have a high enough rpm to warrant using an over head cam. Although, it allows the use of more valves.
 

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Technology is quite spectacular. Pretty cool idea for opening and closing valves. Replace the moving parts with electronics, one problem I can see... Heat normally wears electronics pretty quick, old technology is pretty well tested in longevity on hardware. I'm sure they've taken this all into consideration, plus they want the engines to fail... They don't want anything to last forever... How would they sell you on new bikes or maint. procedures? Just my 2 cents worth...
 

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Because they look pretty. They also used an entirely shrouded exhaust port; that kills HP. For the same reason
Pretty sells, All the technology in in the world won't sell a ugly bike... You walk in the showroom.. And if the bike doesn't give you the come hither look, It will just sit in the corner collecting dust..
 

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Discussion Starter #17
Because they look pretty. They also used an entirely shrouded exhaust port; that kills HP. For the same reason
This is supposed to be the Indian head. Can you explain how that is entirely shrouded? It's only shrouded on the one side and depending on how the air mixture flows through there, it might not matter too much.
 

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This is supposed to be the Indian head. Can you explain how that is entirely shrouded? It's only shrouded on the one side and depending on how the air mixture flows through there, it might not matter too much.
Pop that exhaust valve and take a look behind it....in order to make the exhaust port angel correct for the "look" they wanted. They turn so hard that you can't see the valve a couple inches away. Chambers not shrouded...port is
 

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Is that why my 100 cube Vegas out accelerates Indian 111's through the gears?
 
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