ok guys if i wasnt confused before... lol
1..... if i have a standard rotation motor and im looking at the flywheel and think of a clock.. will it be turning clockwise or counter clock wise?...
2..... and also if i order a standard rotation motor over the phone and asked clockwise or counter clockwise would they be refering to a standard and if so when the guy on the phone replies would the guy from the motor shop be looking at the flywheel or the harmonic balancer...
3.... i know this sound like a stupid question but if you look at the same motor from the front it turns one direction and the same motor from the back it turns the other way..
You have awakened an old thread!
1..... Your Standard LH Rotation engine, when viewed from the flywheel face, will rotate CCW or LH.
As long as I've been involved with Auto or Marine Engines, American Industry Standard has determined engine rotation as though viewed from the flywheel end, of which case is the rear of the engine. This is regardless of it's orientation of installation within the hull (i.e., V-drive or Std Marine Transmission shaft drive).
(see #3)
2..... when ordering an engine, all Engine Suppliers will speak this same language, so if you call out either Std LH or Rev RH, it will get you what you need.
3.... If you were to view the front of a St LH Rotation engine (although the balancer appears to be turning CW now), the engine is actually still rotating in the same CCW or LH direction....... the difference is our perspective...... so think Flywheel!
Sort of like facing forward. To our Right is Starboard, but if we turn around and face AFT, to our Right is now Port.
(ok.... that was rather silly.... but you get my point!)
Chris Craft did some odd front crankshaft drive installations years ago. These engines faced flywheel forward, but technically the actual engine rotation is still determined by the flywheel end. Some confusion came into play when discussing propeller rotation with these engines.
Examples:
A Starboard "flywheel FWD" engine (driving from the front crankshaft), may rotate a RH propeller, yet in Industry Standard terms the engine is actually a Std LH engine.
The Port "flywheel FWD" engine (driving from the front crankshaft), may rotate a LH propeller, yet in Industry Standard terms the engine is actually a REV RH engine.
I'm sure that during replacements, a few incorrect rotations were ordered and installed over the years.
.
