zig
Well-Known Member
I had a post a few weeks back about not being able to start my car. It is a 340 Duster that I had machine work done, I assembled it with a book to put everything to spec. I just ran a compression test and maxed out at 90 psi on almost all the cylinder. I had 2 that were only about 75. I don't believe this is high enough. It sounds like combustion doesn't happen until a minimum of 90. I did add some oil to each cylinder and tried again, had luck on a few, but still nothing higher than 90.
So next step, could the timing chain off affect the compression? I am going to tear into the front to get at the timing chain and check that. The heads were done at a local machine shop. I installed the rings per instructions and put plenty of oil on them.
I hope I didn't screw something up, but it's not looking good... Hopefully it's only the timing chain. I did install a comp cams XE274 and am using stock pushrods. Could that affect anything?
Any guidance is appreciated for my first build...
So next step, could the timing chain off affect the compression? I am going to tear into the front to get at the timing chain and check that. The heads were done at a local machine shop. I installed the rings per instructions and put plenty of oil on them.
I hope I didn't screw something up, but it's not looking good... Hopefully it's only the timing chain. I did install a comp cams XE274 and am using stock pushrods. Could that affect anything?
Any guidance is appreciated for my first build...