Recent content by KT_NorCal

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More general info.

These engines are actually OHV, which was pretty advanced for an industrial engine designed in the late 50s and early 60s. Onan used a Continental flathead engine on the water cooled version of this generator. I don't actually have the exact specs yet. I have to measure it all once I get the...

I actually have the ability to re-size reamers so that would be great if it works just as well. I had understood that honing was ideal for the same reasons that honing the cylinders was... It helped with oil film retention. Also gets the bore very round and very straight if it is a quality hone.

About PipeMax... I have to build an enclosure for this thing so I can leave it in-place outdoors. Given that, there really isn't any reason for me not to try and optimize the intake and exhaust manifolds so they are not constricted like they are. I will have to route them both outside the...

Good to know. That definitely doesn't sound ideal. ha I think I could make my own phosphor bronze or silicon bronze valve guides. I would just have to take them to someone to properly hone to final valve fit. I looked into a valve guide hone a few months ago and was a bit shocked at the price...

Cool! I'll take a look. I definitely won't be casting my own piston but machining them from alloy stock is definitely something I could do.

That is potentially interesting... It is a cast piston though and my experience with cast aluminum is that it can move around on you which might not be a good idea with a piston. I'll have to talk to my welding instructor about it though...

Already am. They are a huge help. Just figured I would post here about the pistons as the number of "car guys" wandering around here is significant...

No, completely different. Vertical inline, air cooled two cylinder. All cast iron, ohv, and about 1 liter capacity. They were somewhat modular in that the JC engine was just a pair of JB cylinder "units" on a common crank and with a different block. They were rated for "prime" power not just...

Thanks for the feedback. It was an original Onan option, kind of like you would pick an option on a car when you are buying it, but it was easily retrofitted as it was literally just a different set of pistons. I have a picture somewhere and will post it when I find it again. They are...

Does anyone happen to have any experience rebuilding old industrial internal combustion engines where you had to source non OEM or non standard pistons? Looking for some recommendations for suppliers. Most custom piston manufacturers are oriented towards high performance or racing which this is...

Thanks! Yep, it was a major pain to get the heads apart. I suspect this compressor hadn't been serviced since before I was born. Where did you get your rebuild kit? I'll probably put together a video once I get all my parts rebuilt and have everything at hand, but I'm not close to that yet. I...

As far as your compressor goes, a good industrial grade pump is going to be better than just about anything you can pick up at an actual store these days so even if you have to get a different tank for it it would still probably be a good deal as long as it is in working order. Not sure if this...

I have a thread in the help section on this issue... Try downloading them to your computer and just simply re-save them. This site has some touchy .jpg rendering code.