Have tapping noise at bottom of motor. Only happens at about 2,200 - 2,500 RPM's under lo or no load. Sofar I have unknown machanics listen and they say it has a bad piston rod, or piston bearing on one of the cylinders.

The car has 106,000 miles and uses oil with no smoke and no drips?

Solutions so far have been: 1) Replace the bearings and the bad rod only if no damage to the crank $875.

2) Get a rebuild short block $2,900 installed.

3) You must rebuild the entire motor for $3,800 - $4,200

I have a nice Ironman and love it but this is almost what I paid for it at 46,000 miles?

Need help in the decision?

Eddie