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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...

Very impressive cooler. Ray

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

Thanks littlelocos and oldCB it is appreciated. Ray

Thanks Sparky and minh. Ray

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

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

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

It runs !! Ray

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...

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...

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...

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

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...

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...

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...

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

This was exhaust day so let me know what you think. Thanks for looking Ray

Well I had one of those days. I wanted to make eight 0.250 diameter X 0.750 long brass nipples for the intake and exhaust ports. There is a 1/4X 28 thread on one end 0.500 long and a 3/16" through hole. Doesn't seem too hard right. I ended up making 12 bushings before I got 8 that were good...

I went out to the shop this morning to work on the engine some more when I realized I didn't have any materials for the intake or the exhaust systems. The parts are on order now. One of the reasons I wanted to make a 4 cylinder engine was I wanted to use a distributor. I made a prototype to...