Pick up a 04 400ex off a trade.
Motor was off frame but completely assembled and "ready to go" put it on frame and go…. Blah blah… I clean quid up and lout new bearing a in it and all .
Put the motor on the frame and start it for the first time."after a few try’s"
When I finally got it leveled out and idling good . I noticed the "knock/tick"
My first thought was Timing chain or valves. But the boy out a new timing chain on this . Plus I adjusted valves and check chain afterwards.
Well I ride it anyways ( I know.. Stupid).
Probably didn’t ride t for put about 40 minutes all together the motor pecking the whole time.
I take it home and it’s smoking extremely extremely bad so I shut it off and tear it down.
And the piston and cylinder is scratched all up the side.
2 weeks and a lot of money later in were I am now new 416 11:1 piston , he at duty timing chain . And awaiting money for cylinder bore.
My question for you all is what do ou think cause this? Wore out piston? Bad wrist pin?
I ask because it was doubt this a first start up , guy swears that it wasn’t doing that at all when he tore t down.
He tore it down to put a new timing chain on it.
Crank has no up and down play.
I basically want your opinions just to compare with my owns .
I also noticed the wrist pin somehow seems a small amount to short for the piston it has play in between the wrist pins. Side to side
And piston is scratched on one side so is cylinder and scratches are below the rings on the piston
Pick up a 04 400ex off a trade.
Motor was off frame but completely assembled and "ready to go" put it on frame and go…. Blah blah… I clean quid up and lout new bearing a in it and all .
Put the motor on the frame and start it for the first time."after a few try’s"
When I finally got it leveled out and idling good . I noticed the "knock/tick"
My first thought was Timing chain or valves. But the boy out a new timing chain on this . Plus I adjusted valves and check chain afterwards.
Well I ride it anyways ( I know.. Stupid).
Probably didn’t ride t for put about 40 minutes all together the motor pecking the whole time.
I take it home and it’s smoking extremely extremely bad so I shut it off and tear it down.
And the piston and cylinder is scratched all up the side.
2 weeks and a lot of money later in were I am now new 416 11:1 piston , he at duty timing chain . And awaiting money for cylinder bore.
My question for you all is what do ou think cause this? Wore out piston? Bad wrist pin?
I ask because it was doubt this a first start up , guy swears that it wasn’t doing that at all when he tore t down.
He tore it down to put a new timing chain on it.
Crank has no up and down play.
I basically want your opinions just to compare with my owns .
I also noticed the wrist pin somehow seems a small amount to short for the piston it has play in between the wrist pins. Side to side
And piston is scratched on one side so is cylinder and scratches are below the rings on the piston
