repower

Originally Posted by Merk

I would replace the pistons and rings by the looks of the piston in the picture. The upper left top/edge is burnt and the piston skirt has marks on it. If the piston is shows wear the cylinder will have wear too. One of your ealier post make comments about fingernail getting caught on a scratch in one of the jugs. That tells me it is time for bore-oversize piston and rings. Reusing used pistons are a waste of time and good money in my book. I've had motors show up at my place with low power and high oil usage because they thought they would save a few dollars by reusing old pistons or using a die grinder trick.

The majority of the time you will have taper in the cylinder wall if you measure it like Kohler wants you to measure it. A good motor rebuilder will measure it like Kolher recomends. I use a good motor machine shop to bore, hone and remove ridge at the top of the cylinder. They have the correct equipment and experence to do the job the right way.

Yes the way I do it cost more money in the beginning. My way will make more power and last longer.

Going back to his delimma-

Just rering for a couple of bucks or bore and new pistons for my guess...$300++. The real question is how long the rods and governor will last. Life will really suck if after all this effort and $$$ if after an hour of use he throws a rod and takes out a jug or he loses the governor and the whole motor.

So, is it $600 or $300 or $50.

Just another thought-

You are replacing a KT, the jugs should be the same as the M18, what condition are those in??????? Pistons?????????

Scott