replacing piston rings...

[Kreator]

does it require any machining work or can i just replace them and assemble the engine back together? Searched, but didnt really find much :-/

thanks

[weirdstyles.net]

to the very best of my no-ledge machine work is nessecary to ensure a proper seal. If your doing this on any two-4-d we are taking at a minimum of a 6/7 year old car so I would recommend having block machined to spec for the pistons to be installed.

We going high performance or stock?

[Kreator]

stock, the idea was to just replace the rings....

how much machining would there be needed? Guess is the same as with a full rebuild right?

[atom]

If the gap checks out OK and the block is in good condition you'll be fine without machining the block.

[nightwalker]

probably no extreme machining, but a honing would be recommended.

[kandyflip445]

Honing. But I've taken apart cars with over 100k and they still have the original crosshatch.

[RBS14]

I highly recommend honing. You may be able to get away with just throwing new rings in but you are gonna kick yourself if they don't seal correctly because of too much gap and you have to do it again. Do it right the first time.

[zeek]

dont forget to correctly mis-align the rings 180 degrees off each other from the thrust angle of the piston skirt as well as the oil rings if you replaced those

[weirdstyles.net]

dont forget to correctly mis-align the rings 180 degrees off each other from the thrust angle of the piston skirt as well as the oil rings if you replaced those

this is the exact post i was looking for... the technical shit that I stare at for hours tryin to figure out wtf he's talking about...

[zeek]

do you or dont you understand what i posted weirdstyles

[ledzeppelin240]

Ok for starter do not replace the piston rings with any other kind besides cast iron. They are the only ring that will make a seal in a bore that has not been machined.

You should Hone the cylinder with a flex hone or a spring loaded one to break the glaze and give the cross hatch so that the oil has a channel to hold on to, this will provide proper lubrication. Lacquer thinner might remove the glaze as well. Double check that the rings fit the pistons correctly and that the ring lands are not worn. Also make sure they fit the cylinder correctly. Like said above ring gaps should all be offset 180degrees. Good luck...

Chris

[96twofourty]

I was reading this mustang mag a few years ago and they were building an engine and used a honing tool that they attached to the end of a drill. Dont know how accurate it would be but you need something

[kandyflip445]

Accurate? It was either a ball hone or a 3 stone hone. Either one will work.

[Kreator]

thanks for the help guys. Thinking about it though, its probably cheaper timewise to find a used engine and swap that in instead of taking the engine apart and then most likely messing something up putting it back together. Probably will stick with that idea.