Search results

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. R

    4 Cylinder Inline Engine

    I understand now thank you for asking. I make it up as I go along. Sometimes that's good and sometimes I have to start over but always the engine runs in the end. Ray
  2. R

    4 Cylinder Inline Engine

    I am not sure I understand your question gbritnell. I have seen round crankshafts pressed together and then drilled and locked in place. Rotax comes to mind. Bored out the 4 cylinders for the cast iron liners. I have been corralled by the wife to remodel our kitchen and dining room...
  3. R

    4 Cylinder Inline Engine

    I am working on a round design like a press together motorcycle type but that's still to be determined. Ray
  4. R

    4 Cylinder Inline Engine

    Well it's been 26 days since I finished my 4 cyl boxer engine and I am having withdrawal jitters so time for another engine build. This one will be a 4 cly inline overhead valve engine with an all ball bearing crankshaft, mains and rods. I got this chunk of aluminum the last time I went to...
  5. R

    Screen Cooler Tank

    Very impressive cooler. Ray
  6. R

    1898 Nash Two Cylinder Build

    I think you will like that carb. I have used them on 7 of my engines to date. Ray
  7. R

    4 Cylinder Over Head Cam

    Thanks littlelocos and oldCB it is appreciated. Ray
  8. R

    Let's make a 4 cylinder flat

    Thanks Sparky and minh. Ray
  9. R

    4 Cylinder Over Head Cam

    I start with an idea and it grows from there. The build thread is in "A Work in Progress" section. Thanks Ray
  10. R

    Let's make a 4 cylinder flat

    Thanks Andrew I agree and I will be trying out some of my ideas to see if I can make it better.
  11. R

    4 Cylinder Over Head Cam

    There is enough lubrication from the valve stems to take care of that. Thanks to both of you for the kind words. Ray
  12. R

    4 Cylinder Over Head Cam

    It runs !! Ray
  13. R

    Let's make a 4 cylinder flat

    I have made two major changes to the engine starting with the distributor. I decided to try to close up the gaps the spark had to jump to get to the plug. The way it was made the spark had to jump over 0,050 in two places and then still have enough pep left to fire the spark plug. This picture...
  14. R

    Let's make a 4 cylinder flat

    I remade the valve spring keepers on cyl #4, lengthening them by 0.070 and realigned the cam shaft. I couldn't find anything wrong with cyl #2 but I replaced the o-ring anyway. Fastened the plug wires as best I can, they don't look too bad. I put everything back together, started the engine and...
  15. R

    Let's make a 4 cylinder flat

    Well the engine does run but there are a few things that need to be sorted before the unveiling. Distributor cap keeps falling off. I have the dist cap held on with some electrical tape for now but when I am sure of the location I will a fix better. Cylinder # 2 has a low output. Cylinder #4...
  16. R

    Let's make a 4 cylinder flat

    I finished up the gas tank and made an aluminum stand for it. The fuel system is done. All that's left is the spark plug wiring and getting it to run. Maybe tomorrow Thanks for looking Ray
  17. R

    Let's make a 4 cylinder flat

    On my models that require a throttle I have been kind of lax. It is usually at the end of a project and I just stick a piece of metal up somewhere to operate the carb throttle. This time I wanted to make a smooth operating and hopefully a nice looking one that is easy to adjust and stays in...
  18. R

    Let's make a 4 cylinder flat

    I have finally decided on the intake manifold. I wanted all the runners to be close to the same length and with the same amount of restriction. Here are the parts I made for the manifold. And a few views of the finished intake and carburetor. This is similar to what I did on my 5 cyl...
  19. R

    Let's make a 4 cylinder flat

    Kind of jumped around today starting with the intake system. I soldered some 1/8" copper 90s on the intake brass nipples. I am still not sure exactly how the rest of the intake assembly will be made. I then went to the electrical system and mounted all the components. Hooked up the ground...
  20. R

    Let's make a 4 cylinder flat

    When I figured out the sequence of operations it worked well. Make the 1/4-28 threads first. Thanks Andy
Back
Top