can't just blindly do that.
has to be disassembled and bore checked first to determine correct size piston.
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here's a bit of info for you, (model specific for camry I4. procedures are basically the same for all engines)
c/p from
http://www.autozone.com/autozone/
The cylinder bores house the pistons and are slightly larger than the pistons themselves. A common piston-to-bore clearance is 0.0015-0.0025 in. (0.0381mm-0.0635mm). Inspect and measure the cylinder bores. The bore should be checked for out-of-roundness, taper and size. The results of this inspection will determine whether the cylinder can be used in its existing size and condition, or a rebore to the next oversize is required (or in the case of removable sleeves, have replacements installed)."
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only after that will you know what piston(s) to buy.
b4 you even do that, one would determine if the over all engine condition warrants the effort and cost.
http://www.autozone.com/autozone/rep...00c152801ccaae
then is your vehicle even worth it. or should you buy another vehicle.
if you wanna keep the vehicle regardless of over all condition, would it be cheaper to just buy a complete engine and have it put in? in the long run, it's generally better to just get a re-manned block with a warranty. if you do it, there's no warranty.