With the high performance camshaft, what should the ignition spark advance be set to? I'm experimenting with my 8 hp flathead engine by making it possible to turn the magneto plate clockwise to advance the timing. I estimate the factory timing to be only about 18 degrees?.
The Main Bearing ARE roller bearings.. look at picture of the bearings in a dennis carpenter catalog.. or else where. The Rod bearing is a plain bearing.. and that is all it needs to be at 3600 rpm
Hello... I have a barrel spring scooter. its cam had problems. we had it repaired, the guy didnt know how to time it, and I dont either. Could you help me out? its a flat head motor.
That looks really nice, I would have loved to had that on my 58 Eagle back when I was in High School, even though I had the 8 horse engine, those stinking little Harley 125 2 strokes would run off and leave me in the dust. LOL
look at the head.. there is now a huge amount of room above the piston that doesn't exist in the original. This whole thing is dumber than a box of rocks. The original design is over square.. bore bigger than stroke.. which is how modern engines all work, because it lets them rev higher, and make more power with the same compression ratio. The approach that makes the most sense, is super charging or turbo charging,, with super charging being preferred, milling the head for higher compression, and using higher octane fuel. Cam timing and ignition timing can be changed to suit the new conditions, and a lot of folks say the 22 mm mikuni gives them more speed on a stock engine. but really 8 hp what's wrong with that ? I dislike this huge intake valve without a hardened valve seat.. really a low rent way to do things.
That depends on the wrist pin location a stock rod length can still be used but the critical angle will affect the rotating mass and stresses so a longer rod will be at less of an angle and less stress but the rod he is using can take the stress .
look at the head.. there is now a huge amount of room above the piston that doesn't exist in the original. This whole thing is dumber than a box of rocks. The original design is over square.. bore bigger than stroke.. which is how modern engines all work, because it lets them rev higher, and make more power with the same compression ratio. The approach that makes the most sense, is super charging or turbo charging,, with super charging being preferred, milling the head for higher compression, and using higher octane fuel. Cam timing and ignition timing can be changed to suit the new conditions, and a lot of folks say the 22 mm mikuni gives them more speed on a stock engine. but really 8 hp what's wrong with that ? I dislike this huge intake valve without a hardened valve seat.. really a low rent way to do things.
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¡Gracias!
With the high performance camshaft, what should the ignition spark advance be set to? I'm experimenting with my 8 hp flathead engine by making it possible to turn the magneto plate clockwise to advance the timing. I estimate the factory timing to be only about 18 degrees?.
Genius!
I'm wondering, did cushman use roller crackshaft bearings on any of their models ? thank you.
never
The Main Bearing ARE roller bearings.. look at picture of the bearings in a dennis carpenter catalog.. or else where. The Rod bearing is a plain bearing.. and that is all it needs to be at 3600 rpm
Hello... I have a barrel spring scooter. its cam had problems. we had it repaired, the guy didnt know how to time it, and I dont either. Could you help me out? its a flat head motor.
That looks really nice, I would have loved to had that on my 58 Eagle back when I was in High School, even though I had the 8 horse engine, those stinking little Harley 125 2 strokes would run off and leave me in the dust. LOL
With a longer stroke you need a shorter rod. Not longer.
look at the head.. there is now a huge amount of room above the piston that doesn't exist in the original. This whole thing is dumber than a box of rocks. The original design is over square.. bore bigger than stroke.. which is how modern engines all work, because it lets them rev higher, and make more power with the same compression ratio. The approach that makes the most sense, is super charging or turbo charging,, with super charging being preferred, milling the head for higher compression, and using higher octane fuel. Cam timing and ignition timing can be changed to suit the new conditions, and a lot of folks say the 22 mm mikuni gives them more speed on a stock engine. but really 8 hp what's wrong with that ? I dislike this huge intake valve without a hardened valve seat.. really a low rent way to do things.
That depends on the wrist pin location a stock rod length can still be used but the critical angle will affect the rotating mass and stresses so a longer rod will be at less of an angle and less stress but the rod he is using can take the stress .
looks very nice
look at the head.. there is now a huge amount of room above the piston that doesn't exist in the original. This whole thing is dumber than a box of rocks. The original design is over square.. bore bigger than stroke.. which is how modern engines all work, because it lets them rev higher, and make more power with the same compression ratio. The approach that makes the most sense, is super charging or turbo charging,, with super charging being preferred, milling the head for higher compression, and using higher octane fuel. Cam timing and ignition timing can be changed to suit the new conditions, and a lot of folks say the 22 mm mikuni gives them more speed on a stock engine. but really 8 hp what's wrong with that ? I dislike this huge intake valve without a hardened valve seat.. really a low rent way to do things.