Roger B
Well-Known Member
Are you planning to make a compression tester? There is quite a difference between what feels like a lot of compression and enough to reach ignition temperature ~30 bar plus.
I have a small engine compression tester, but I would need to make some kind of funky adaptor to allow it to connect up to the injector hole.Are you planning to make a compression tester? There is quite a difference between what feels like a lot of compression and enough to reach ignition temperature ~30 bar plus.
Buy a bigger drill?After some trials, tribulations and a redesign, here are the rockers fitted along with the pushrods.View attachment 156112
I like this system of rocker pedestals and trunnions, it turned out very nicely and I'd certainly use it again. I would however beef up the middle of the rocker a bit, I managed to squash one in the vise and had to remake it.
It's not so obvious in the photo, but I also made the copper head gasket. It seals well, and at present the only obvious leak is the valves. I'll have to re-lap them. Even with a substantial leak from the valves the compression pressure is considerable, the engine is very difficult to turn past TDC by hand. This of course raises the question of how I'm going to start it, as it is also a struggle for my electric drill.
In terms of major assemblies I only have the injection pump and governor left to go. Plus a few odds and ends. Very exciting and I can't wait for the next time I've got some free time for machining
Buy a bigger drill?After some trials, tribulations and a redesign, here are the rockers fitted along with the pushrods.View attachment 156112
I like this system of rocker pedestals and trunnions, it turned out very nicely and I'd certainly use it again. I would however beef up the middle of the rocker a bit, I managed to squash one in the vise and had to remake it.
It's not so obvious in the photo, but I also made the copper head gasket. It seals well, and at present the only obvious leak is the valves. I'll have to re-lap them. Even with a substantial leak from the valves the compression pressure is considerable, the engine is very difficult to turn past TDC by hand. This of course raises the question of how I'm going to start it, as it is also a struggle for my electric drill.
In terms of major assemblies I only have the injection pump and governor left to go. Plus a few odds and ends. Very exciting and I can't wait for the next time I've got some free time for machining
"the engine is very difficult to turn past TDC by hand"View attachment 156112
It's not so obvious in the photo, but I also made the copper head gasket. It seals well, and at present the only obvious leak is the valves. I'll have to re-lap them. Even with a substantial leak from the valves the compression pressure is considerable, the engine is very difficult to turn past TDC by hand. This of course raises the question of how I'm going to start it, as it is also a struggle for my electric drill.
Enter your email address to join: