Big end connecting rod bearing failure

GoldenMotor.com

desolation

Member
May 21, 2012
140
1
16
arizona
How do I replace the big end connecting rod bearing or should I just buy a new crank assembly to replace the old one my piston rod won't even move on the big end at all
 

sbest

Member
Nov 3, 2015
343
2
18
Nova Scotia
You press it apart with a big shop press and special pins, then replace the bearings, pin and rod. It takes careful work and measurement to get it back together right.

Certainly buying a new crank assembly is the easiest option, and often cost effective. My supplier does not sell assembled cranks but the parts to do it are $35 and getting the job done is at least $50. Unless you can press it yourself, it pays to buy another engine.

Steve
 
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desolation

Member
May 21, 2012
140
1
16
arizona
I'm just gonna buy a new bottom end from that's dax and sell my usable parts to buddy to off set the cost
 
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crassius

Well-Known Member
Sep 30, 2012
4,032
158
63
USA
swapping a crank or even a whole bottom end is OK for a hobbyist, but as a repair shop that charges for labor, I always recommend swapping to a new motor
 

desolation

Member
May 21, 2012
140
1
16
arizona
I just replaced the top end already so its basically a new motor the piston and cyclinder have less than an hour on them