Re: Timing Chain wear allowance

Posted by Tim Stockwell On 2020/6/29 16:34:25

Dave and Ross,

Thank you for your help. I have attached an image of the installed new chain and gears. I also verified that #1 spark plug was firing on the compression stroke by spinning the engine watching my compression gauge and the sparking plug. I found that the distributor was 180 degrees out and once I changed it, I still can not fire it up.
This car ran very well before I took the head off to get a water jacket leak fixed but the head was not salvageable. I had another head that had all the same casting numbers and had the shop check it out. When I put it together, it ran rough and I found evidence water was getting into one of the cylinders. That's when I think it jumped time.
I took the head off and had the machine shop look at it again and the found a pin hole. The fixed it. I installed it and the car would not run. That's when I decided to check the timing chain and found it sloppy. I have also done a compression test. The results seem low.
#1 = 70
#2 = 40
#3 = 55
#4 = 55
#5 = 55
#6 = 60
#7 = 60
#8 = 70
I then put oil in all cylinders, spun the engine and took measurements again to get 30 to 40 more psi in each. Sounds like the rings are shot, but the cylinder walls had no ridge. Regardless, shouldn't I still be able to start this engine? I have run out of ideas. Any help from you all would much appreciated. Please feel free to call me at 916-316-8383

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