Finally got the compression test done. Here are the numbers ftom 1 through 8: 129,125,130,149,140,140,150,145. Cylinders 1 & 2 got a spray of PB and a 2nd test. 134 and 141 respectively.
I checked the rotor by hand and it does advance and retard smoothly, I just think the springs are soo light and with a high idle, its fully advanced when running. I know the exact cam, the box it came in is in the trunk with the old cam in it. My concern with the valves was the dancing vacuum...
Well you are pretty much right on with what I ended up doing. I disconnected the vacuum advance and set timing at 35 full advance. I did rev it up and got no further advance so I think they are all out very early. It starts up pretty easily. Some slight blowback occasionally. It runs OK...
So I put back together and back in the car and now I have some more questions. I had it idling around 1100-1200 without the vacuum advance connected, I didn't get any more mechanical advance as I revved it. With vacuum connected, it advanced around 24 degrees!? Does that mean the weights are...
Would you believe it if I told you they are at .365. No joke. I just measured them and one side was .355 and the other was .365. I evened them up,came up and looked and your chart and thought, "wow that just might be perfect". Then I read your post and got some confirmation. Looks like I'm...
I don't have the extra cash. I feel guilty enough spending money on myself when I could put it into my children's college saving's account. The few dollars and work I put into this demon will hold its value. I'm not going overboard at least until my son is old enough to help me build it.
Good...
Thanks for the reference. It currently has L17 stamped on it so it has a whopping 34 degrees of advance! No wonder. I was expecting more like 20 degrees. This was never going to work as is.
Thanks for your help.
I also just stretched the weight springs a little on each. I will see how it goes. Hopefully I'll have time to get it back in tomorrow. I am wondering what noticeable benefit will I get with a performance distributor other than adjustability. If I get this to work well, I'll probably leave it...
By the way, I found out the distributor is a stock one (3656763) and that's why it has soo much advance. Probably around 24 or more degrees. I didn't take the time measure. Now I'm thinking I might not have closed them up enough !?
Ok, so mechanical stop for the distributer and check the intake for leaks. I'll check for leaks tomorrow and try to figure out how to add mechanical stops for the distributer.
Thanks, I'll reply back with results.
I did a quick check with a screwdriver in the cylinder head. It seemed to be right but obviously I could not tell if it was off by some degrees. Its a newer balancer, but I didn't think it could be off like that.
I was wondering if this was going to be the answer. I have no experience with radical cams or high performance motors. Is that what most people do when running this cam?
I'm having trouble trying to get my 340 timed properly. When I go to set full advance near 38 BTDC at 4000 rpms, the car does not want to idle well near 15. When I do get it to idle, it backfires and coughs flames when trying to start the motor. That is with the vacuum advance connected to...
Great work. Looking forward to follow your progress. I have a 66 dart convertible as well waiting to be redone. It was my first car but has been sitting in my garage for 17 years.