Hi Norbert
Engine Reconditioners will check rods with varying degrees of care, from a full house X Ray crack detection to a simple visual check. It is a bit of a gamble, you hope you get what you pay for.
Rods should be checked for damage, bending and twisting, any found should be rejected as a first step. Those considered suitable for reconditioning are checked for dimensional tolerance, and as required big end cap faces are machined off make the big end eye smaller, then re machined to restore the eye to standard size. Small end bushes are replaced as required, the small end eye is sometimes bored oversize if required, then an oversize OD bush installed, then bored an reamed to fit as usual. All depends on how rare the parts are and what the market will stand, a well reconditioned rod may cost more than a lucky find new old stock one.
Beware of "Exchange Rods". They may be just that, having had just a a quick "Wash and Brush Up" rather than being a checked, tested and fully reconditioned. More information here.
https://fer.co.uk/ This is the UK trade body, "The Federation of Engine Remanufacturers" which has standards for its members'products. Worth having a quick looky look at what gets done, bearing in mind most are involved with vehicle rather than motorcycle engines. The FER has links with similar European organisations, so there is some degree of common standards. Having said that, there are some that work to their own less stringent standards but still charge a premium price, so make sure you know what you're getting.
If your rods check as being OK for further use. a polish out of the nicks and a balance to match them is better than unknown rods chosen at random by some supplier and not even a matched pair.
Swarfy
