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2004 350 rancher knocking

5795 Views 29 Replies 7 Participants Last post by  Manny, 
YellowRancher
2004 350 rancher 4x4: the motor started knocking, sounds like it is the connecting rod , from what iv heard rancher's are bad about the wrist pin hole getting wallered out creating alot of play. I would like some opinions on should i just get a connecting rod done to it or get both crank and connecting rod?i was going to send it off to mr crankshaft but wanted some feedback if they were any good or not. Also topend has about 20 hrs on it if not less and started smoking agian any ideas?
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R
YellowRancher said:
....It has been ran completely out of oil some times due to it smoked alot and when i was riding i would forget to check it. No boring just a litfke honeing to the new jug.

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I have a man who owns a atv shop near me who is going to help me slip the cases and take it all apart and do it right for a change.

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This time its going to be done right, and seeing about a cam and high comp piston.
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Why a bored topend? I have a good cylinder and piston with stock bore just need new rings because i lost one when taking it off. No scratches or lips on it.
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Don't ask why, the reason(s) is self-evident. Have your friend measure your cylinder bore in several places. If it is out of spec (properly honed) it will have to be bored oversize with a new piston set in hand at the time of machining. You promised you were going to do it right this time. You are getting solid advice here... we haven't given up.

Your turn. :)
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R
No, you'll need to measure the best cylinder you have to see if it will be within spec (after honing) or not. If none of your jugs are fit for work then you'll need to have one of them bored. In that case the machinist should have the oversize piston set on hand during the rebore/honing so he can precisely clearance the piston for that new bore. G&H are great at doing that. Don't buy a piston or rings until you find out what will be required. And have fun..! :)
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