Re: Ken's 1937 115C Touring Sedan

Posted by Ken_P On 2015/3/1 17:13:53

Well, the machine work took a little longer than expected, but it should all go back together pretty nicely, once it warms up a bit.

After I repaired the crack and honed the cylinders, the machine shop installed hardened valve seats, ground the valves, decked the block (about 0.001 removed), and polished the crank. After cleaning and magna-fluxing the block, the machinist found two more smaller freeze cracks. Neither of them leaked before the block was cleaned, so I am on the fence about fully fixing them. The stitching pins I used before have unique spiral threads that pull the surrounding metal together instead of pushing the parent material apart, so I am thinking I could put one pin in each end to stop the crack from spreading and call it a day.

Any experts on piston knurling out there? I would like to knurl the skirts on mine, but I understand it's more of an art than a science, so I'm not really interested in trying it myself after spending money on the machine work.