Cub Engine Overhaul

TC2 · Aug 13, 2011

Does anybody have an opinion about which C60 complete engine overhaul kit to buy and which ones to stay away from? I am getting ready to tear one down, and looking for advice on which kit to buy.

CNKS · Aug 13, 2011

Tisco. The "no name" ones may be ok, but you never know.

Janicholson · Aug 13, 2011

The "KIT" will be rather less expensive, as it has no cylinder sleeves. Cubs are sleeveless (plain) cylinder bores. Unless you know how worn it is including the bore taper, and valve condition, as well as how much needs to be taken off of the crank to make it servicable, pre purchasing will only be a waste of time. When it is diagnosed, the cleanup and machine work will take place while the parts are being delivered. This site has very good parts, and prompt delivery. It also is reasonable in price. Jim

CNKS · Aug 13, 2011

Whoops, I forgot it did not have sleeves -- you are correct.

TC2 · Aug 13, 2011

I wasn't planning on ordering until I knew the condition of the crank, bore, etc. I was just wondering if anyone had any opinions on the different kits that are out there.

El Toro · Aug 13, 2011

The machine work to bore the cylinders won't be cheap, but with new pistons and rings the rebuild will last a long time. Have your local auto machine shop to measure your crankshaft for wear. They won't grind it undersize unless it needs it. With a polishing of the journals will make it look new. Buy your bearings from them. Have them do the valve job on block. Hal

ih560 · Aug 13, 2011

It shouldn't be that expensive to have that little block bored. I just had a 9000 Ford block bored .030 over, hot tanked and honed to fit the pistons, for less than $300 and that was one of the more expensive places, but it was really close so I took it there. I know they quoted me around $200 until they seen how big the block was and then the price jumped way up, so on a cub engine, it should be really cheap.

And the kits aren't really that much cheaper, just because it doesn't take sleeves. I deal in a lot of parts and it seems that you can buy a liner kit (for many engines), which is piston, sleeve, rings and wrist pin, for just a couple dollars more than buying the sleeve or the piston individually.

ccaissie · Aug 14, 2011

My engine did not need valves, so I did not purchase a kit. I parsed it out, new crank through YT, Pistons, bearings from TISCO, etc.

Used to buy direct from TISCO, but now only through dealers. Most dealers will tell you if parts are TISCO or other make, and you can shop for best prices on "sub-kits".

Local machine shop charged $100 for bore to .040, and $3 each to resize the valve guides. I ground the deck flat to true it up, using the head and some #80 grit, and used solder to fill in some divots. Bought 4 used exhaust valves and lapped all in by hand.

All went well, except I am struggling with other stuff to get it running well.

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TC2

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CNKS

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Janicholson

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CNKS

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TC2

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El Toro

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ih560

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ccaissie

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