one piston or all three 87 dt85

[fish4970]

i need to replace one piston and bore one cylinder<br />#1 & #3 still look like new<br />but #2 piston & cylinder are scored <br />would it be a bad idea to just bore #2 and replace just that piston <br /><br />or would that create too mutch vibration<br />thanks in advance

 

[Dhadley]

Re: one piston or all three 87 dt85

Do 1 and 3 still measure within spec?

 

[fish4970]

Re: one piston or all three 87 dt85

i believe so <br />there is no lip at the top of the cylinders at all<br />don't think there is even 200 hrs on motor<br /><br />thanks for the post

 

[Dhadley]

Re: one piston or all three 87 dt85

Once you measure it you will know how many to bore. Your machine shop will measure it with a dial bore gage. Make sure you use someone who is familiar with outboard boring.<br /><br />Good luck!

 

[fish4970]

Re: one piston or all three 87 dt85

does it do any harm by just over-sizing one piston

 

[Dhadley]

Re: one piston or all three 87 dt85

If the rest measure within spec for standard bore there will be no ill effect in oversizing one piston.