Recent content by Lloyd-ss

PISTON Now that I am past the injection (an almost fatal consumer of good shop time), I can have fun again. I made the piston last night, but it still needs ring grooves, after I have the rings. There are lots of 39mm rings available, and after the injector debacle, I will be buying the rings...

Off of dead center I am finally off of dead center on this project and have a top end, including a unit injector working like I think it should. There are a half dozen injectors in the scrap box, but this one, with its synchronized low pressure pump seems pretty close. I had to turn the fuel...

@Niels Abildgaard Niels, might I suggest you take a look at this. http://www.dragonfly75.com/moto/CBinstr.html I just purchased his crank balance calculator spreadsheet for my 2 stroke diesel and it is very very extensive and complete. The what-ifs for the design phase are pretty much limitless...

Hi Sarah, I looked up the cross reference to EN1a and see that in the USA it is known by the SAE spec of 12L14. That is a very popular leaded mild steel of medium strength that machines very nicely, "a leaded free machining steel." I have used lots of it and have pieces of it in my metals rack...

Ok... please help us out. Always ready to learn. Lloyd

Very interesting and enjoyable discussion, and @NapierDeltic Thank you for dropping into the middle of it. @minh-thanh , I definitely hear what you are saying and that's why I called it a conundrum. With the use of different grades of gasoline, and antiknock additives, and knock-sensors to...

Ha ha, I guess we will just have to accept the fact that each of us is right, and the other person is wrong, haha. No hard feelings, of course. BTW, I have seen compression temperatures and auto ignition temperatures listed in many places with wildly varying numbers. A solid consensus seems hard...

Hi @minh-thanh Auto ignition temperature is the lowest temperature that a proper air fuel mixture MIGHT ignite, not the temp that it WILL ignite at. The speed of compression, and the high pressure within the cylinder make the auto ignition temperature difficult to predict. I think you are...

Minh-Thanh, I hope Peter doesn't mind me stepping in here, but I will do my best to present the math for the thermodynamics of air compression. First, an assumption regarding the type of compression must be made. With fast compression as in an engine, the process is normally considered to be...

I remember Mr.Hansen saying in one of his diesel videos that, even though he has been asked many times, he does not give drawings or much "detailed" information about his engines, because if he does that, people will ask more and more questions, and will want him to diagnose why their engine...

I occasionally need to refer back to the opening post of the topic to see what question the original poster asked. Lloyd

Yes, with a roots blower like Greyhound buses, diesel trucks, lots of marine and stationary engines, and of course trains with the always disastrous run-away blown diesels. Here is the build thread for the project. I have been stalled on it for a while, but now that I have the blower, head...

A few people on the forum (MT) have successfully built true diesels, but it ain't easy. Regarding fuel atomization, it can be done. I am working on a 2 stroke diesel patterned loosely after the Detroit Diesel series of engines. I finally got the unit injector (HP pump and injector combined into...

I think that sentence says a lot. You are not expecting anything good, and that's probably what will happen. Welding is an art that takes a lot of time to learn to do just an "acceptable" job. There are no short cuts "as seen on TV." First suggestions (and I do not shy away from learning very...

Wow, it must be so nice to have an active club with real activities, including testing and certification. No "test till failure", I hope, where the only witness is a video camera?