120" Ultima Problems?
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Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
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From: Windham,Maine
120" Ultima Problems?
A friend just asked me about his 120" with approx 1K on the clock.When his reaches operating temps it starts losing power,and making a funny sound.I know it is not much to go on,I have not seen it.Just trying to get an idea of what we could look for.He says the motor only has 1 vent hose,that by itself does not sound right.Grasping for straws!!!
Elite HDF Member
Joined: Sep 2007
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From: Bluffton, South Carolina
What chassis is it in? "Funny sound" is a little vague, Is it a grinding, a squeaking or what. How is the oil pressure? Where does the noise appear to be comming from? How is his compression? Take the plugs ou and torn the motor over by hand, how does it feel? See if you can get a little more input.
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Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
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From: Windham,Maine
Have to drive 1 1/2 hrs to his house to see motor.He says the plugs look great,oil pressure was normal,noise seems to be coming from front cylinder.other than that he is afraid to go any deeper.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Where is he located??
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Could be a broken ring or maybe a wrist pin. He may have gotten it too hot on initial break in and scored a cylinder. Take a look in the cylinder with a light and see if you can see anything. If not maybe something in the rocker boxes. Hope this helps.
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Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
Vassalboro,Maine is above Augusta.Talking to my friend,he says letting the bike set a very short time it starts and runs great.When it gets hot it starts the problem over again.This problem he is having just started happening.It sounds to me without physically seeing,hearing the motor,like maybe the pistons are starting to seaze when it gets hot.Unless I hear otherwize a topend teardown is in order.
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