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Here's my second attempt at the piston. Worked out well.

Hi Richard, suppose to be 1 11/16" or 1.687". I used digital calipers. Then checked with a height gage on a surface plate. In order to center the little end I had to take off 50 thou on each half of the big end That worked, but now there's not enuf meat for the hole on the big end. Will see if...

New problem. After partially machining the connecting rod, I find that the hole on the small end of the connecting rod is nowhere near center. I machined the big end to the point of having accurate dimensions after having split and mill it. After laying out for both holes, I find the hole for...

As mentioned, I got the piston on the second try. Have pics but can't post them, because the files are to big. Don't know how to correct that.

Took two trys, but I got it.

How about a Greek geek?

Thanks Steamchick, Plenty of info to mull over. Think I'm going to make a new piston, and go with graphite packing for the seal.

Well here it is, not a quite a year later and I've made some progress on my engine. I left off with oversize bearings but have since corrected the problem on the casting and machined new bearings. Moved on to the piston and piston rod. After machining the piston I now have a two and a half thou...

Got tired of using firewood or coal. So I adapted a furnace burner to be used in my combo stove for the garage. Piped it up and now semi instant heat.

I have a Lathemaster/Hf 8x14 lathe. Can't seem to find a carriage stop for it. Any ideas

Elaborating on what Brian said about being lost with inverter/multi process machines. It's quite common. Aside from alloys that require a high freq start/continuous or some advanced pulse options a DC constant current machine (stick welder) a lift/scratch tig torch with a manual gas valve is all...

Hi Brian, As a pipewelder by trade I use the TIG process fairly regularly. Don't have any book recommendations but as mentioned, YouTube is your friend. Having said that my pick for tutorials would be Welding Tips and Tricks. Jody is an excellent teacher he finished his career welding aerospace...

Root and face bend tests are done for welder performance and procedure on butt welds on plate and pipe. If an indication of larger 1/8" in any dimension shows (with the exception of the edges unless a definite weld fault from inclusions, cold lap, lack of fusion etc) the weld is acceptable...

As far as welds go the coupling to pipe joint would be classified as a lap joint or if it were carbon stainless or any other material it would be called a "socket weld" which uses a fillet weld to fuse the two together. Being a pipewelder by trade and looking at the exterior and interior I would...

Carbide precipitation comes to mind with stainless steels. Thats why many grades have an "L" suffix to there grade (ASTM austenetic grades). Having said that elevated temps for to long a period will cause carbide precip and the stainless will rust. Many guys weld either to hot or to cold and...

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Figured out the problem. I thought for sure it was the bearings or the crank. 400 wet or dry and a piece of polished granite is a great thing to have. As it turns out there was 1 thou difference on the bearing pillars on the sole plate on either side. It was the last thing I thought of in my...

Thanks for all your help. Steamchick sometimes I get to the point where I've been working on something long enuf and then start taking short cuts and want to get to the next step. So I chucked a hand reamer in the drill press held the part and ran it through a couple times. Then bolted...

Steamchick and Andrew Lol the damage is done. Talk about eating a slice of humble pie. Need new bearing material and pretty sure my crank is bent somewhat and the bearings are worn. To save some time and money what 9/32" round stock could I use?