Re-seating piston rings

[mixgashaulbass]

I have a 15 kx450f,40 hours since new and ridden easy it's whole life,never seen a track,but the problem is it smokes if you let it idle for a few seconds then rev it, I'm thinking the piston rings didn't seat correctly when the previous owner broke it in,any way to get the rings to re-seat without taking it apart? thanks

[MentalGuru]

Not really.  Old school drag racers used to dump a water/Ajax mix down the carb to seat rings.  I wouldn't recommend it but it did work on a 340 I had with chrome rings that wouldn't seat about 25 years ago.

[CDNSXV]

Reseating rings requires honing the cylinder surface and most likely replacing the rings themselves.

[William1]

Pony up, buy rings, at a minimum. If the barrel is bad, you may need a replate. Magic formulations do not work on a race engine.

[notoriousE-R-I-C]

What the OG said.

[theDogger]

When ever doing a top end:

1- Re-Hone the cylinder
2- Pre-clean all with contact cleaner
3- Only oil the pin and clips 
4- DO NOT oil the cylinder or the RINGS or the Piston make sure they are BONE DRY!
5- On first start let it idle until it pukes coolant and shut it down and let it cool
6- After it has cooled start it up and let it warm for 2-3 mins then just rip it!

I have done over 15 of my rebuilds this way all have been JE HC pistons, PC Modded heads, Del-West Valves (Shimmed hair tighter than OEM) and Ron Hamp Web Cams...You would be surprised how clean and carbon free the piston is after 100 hrs 

 

theDogger