Do the new 450 ATVs with coated aluminum cylinders need honed?

Question

i thaught you would want to but was told that sometime it would ruin the cylinder. i thaught it was a 2 stroke thing that people would not use a hone. just want some input on the subject.

Answer 1

If the nikasil is compromised at all (ring groove, scoring, pitting), then the cylinder will need to be replated or sleeved.

If you're just installing new piston and/or rings as a maintenance thing, then a hone isn't necessary.  If a professional shop does the job, they may run a very fine grit hone for a couple of passes just to give the cylinder a bit of 'tooth' so the new rings will seat more easily.

I wouldn't recommend anyone with a handheld hone to do it though - you'll have more of a chance of damaging the cylinder than making anything better.

Answer 2

if its got a ring grove or is rough wouldnt hurt

Answer 3

Yes you have to