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  #21  
Old 9th April 2015
XLCHc*ntmagnet XLCHc*ntmagnet is offline
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alright here she is guys!


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  #22  
Old 9th April 2015
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ok static timing is just setting it close to where it needs to be to run, after it starts you need to set the timing WITH a strobe timing light in the ADVANCED position you move the mag body to the retard position for easy starting and then move it to the advanced position to run normally DO NOT run it in the retard down the hiway good way to burn a hole in a piston
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  #23  
Old 9th April 2015
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Quote:
Originally Posted by jayel View Post
DO NOT run it in the retard down the hiway good way to burn a hole in a piston
Explain?
Retarded timing provides less burn time, which is not fuel efficient, nor power efficient and may increase heat to the exhaust valves (more fuel still burning), but why would it affect the piston?
Holes in the piston are usually due to very lean mixture.

Not that retarded timing may not contribute to the lack of speed.
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  #24  
Old 9th April 2015
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Quote:
Originally Posted by sportsterdoc View Post
Explain?
Retarded timing provides less burn time, which is not fuel efficient, nor power efficient and may increase heat to the exhaust valves (more fuel still burning), but why would it affect the piston?
Holes in the piston are usually due to very lean mixture.

Not that retarded timing may not contribute to the lack of speed.
you are putting extra heat into the combustion chamber whether you burn a valve, burn the side walls of the cylinder, rings don't like thatand that will screw up the piston the motor is going to run hotter than it should

http://bobistheoilguy.com/forums/ubb...Number=1054743
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  #25  
Old 9th April 2015
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Quote:
Originally Posted by sportsterdoc View Post
Compression: Worn rings or more likely valves not fully closing (a compression tester is available at most any auto parts)

Plugs black: Way too rich and/or maybe a very weak spark
Or the bad compression you suspected.
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  #26  
Old 10th April 2015
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Quote:
Originally Posted by jayel View Post
you are putting extra heat into the combustion chamber whether you burn a valve, burn the side walls of the cylinder, rings don't like thatand that will screw up the piston the motor is going to run hotter than it should
Interesting...never seen a motor run long term, extremely retarded.
I am usually trying to push the advance as much as I can without pinging.
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  #27  
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Quote:
Originally Posted by wedge View Post
Or the bad compression you suspected.
If I were a gambler, compression would be the favorite.
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  #28  
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If I were a gambler I'd say the OP doesn't know to turn the magneto after it's fired up.
just grab the magneto body and try to turn counterclockwise, it should turn and come to a stop that's adjusted on the bracket under the mag, if properly static timed that would be the running position.
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  #29  
Old 10th April 2015
XLCHc*ntmagnet XLCHc*ntmagnet is offline
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Alright guys! re-timing my magneto sounds like the golden ticket. or at least some mph, while i figure out the compression. i feel pretty informed about mag timing after some research, I'll be able to do it with a multimeter instead of a strobe light, right? any tips for me before I start messing with the timing?
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  #30  
Old 10th April 2015
XLCHc*ntmagnet XLCHc*ntmagnet is offline
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btw I took out the baffles and reset the idle mixture, ran it around some and rechecked the plugs and they aren't black anymore
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