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Even though I do everything myself...but I like your way of thinking. Still my saying: Get the engine running, everything else will follow . At least, that engine tells you what you should do next, perfect it,...

Exactly, That's happening with my computer's browser - Google, M Edge 👍👍👍

Hi K2 . Anyway, your opinion is correct ! Precise design, precision machining are always the first choice ! 👍👍👍

Hi All ! One designed and tested I'm trying to solder...

Standard process: difficult, because everyone has different approach, different machines, different tools, different technical background... moreover most of us only build one or two engines We come here to have fun, learn....

You have experience with engine cylinders, pump cylinders are no different. Same . It's just smaller - a little more difficult to do.

Personal opinion...a little grinding..., a little adjustment ..no problem. A little error in the design and machining of parts of a home-made engine is normal. I'm not a design or manufacturing expert, although errors are limited... but it's still there. Sometimes fixing mistakes is fun,...;)

I don't know...but I like to call it a fuel pump ;)

What is happening ? I saw a new member with the nickname: titan machinery, he introduced himself simply, He is from China and deals in machinery, donated more than 25 USD to the forum, and then his account was no longer visible. Or am I wrong??

If it were my engine, I'd be pretty confident it would run fine

"the engine is very difficult to turn past TDC by hand" 👍👍 Only when you build will you know how it is

Hi Personally, I find the compression quite ok .

Interesting informations Thank you. 👍

👍👍👍👍 ! I have made quite a few injectors ( 10 or more ) and several different styles: As you said, I cannot determine the exact angle after finishing The angle is too small and it will get stuck.

Ok, everything is relatively clear. We confirm that the temperature is theoretical - and in perfect conditions - Everything should be perfect ! In reality, it depends a lot on other factors that we have mentioned, and it is impossible to achieve the calculated temperature. Why do I want a...

Hi All ! A little free time...

That's right . But with a compression ratio of 12-1 and a temperature of 330 degrees Celsius, it is too high compared to the auto-ignition temperature of gasoline - 280 degrees Celsius. And with that 330 degrees Celsius, 2-stroke and 4-stroke engines will not need an ignition system and we may...

Hi @Lloyd-ss ! Thank you, at least you gave me the formula to calculate Thank you very much ! But to me this information is completely wrong : "6:1 12:1 166 psi 625-F (for the non-imperialists, ~12-bar, ~330-C)" 330 !??? what ?? It is completely wrong with the principle of 2-stroke and...

Ok, understand You, Please explain, prove...or in any way you can : 6:1 12:1 166 psi 625-F (for the non-imperialists, ~12-bar, ~330-C) Please Most important: 330 degrees Celsius !!

Let him answer me. Please tell me where you got that information? source ? link ??? It is not necessary to answer all of that information Just need this information : 6:1 12:1 166 psi 625-F (for the non-imperialists, ~12-bar, ~330-C)