jjslade Posted September 2, 2019 Share Posted September 2, 2019 So i was trying to get the car started and heard it was making no compression, so i did a compression test and confirmed that. I took the cam cover off and saw that when i was turning the engine over the cam gear was moving but the camshaft itself wasnt, the camshaft does move using some vice grips, and i know the engine isn't seized. I'm thinking either the woodruff key has sheared off, or the camshaft has snapped under the first cap. What do you guys think? IMG_8170.MOV IMG_8169.MOV Quote Link to comment Share on other sites More sharing options...
calZ Posted September 2, 2019 Share Posted September 2, 2019 (edited) Well if the cam sprocket is spinning and the cam is not, something is obviously wrong. It's possible that the bolt that holds the sprocket in relation to the cam worked its way out. Can you check if it's still there? Edited September 2, 2019 by calZ Quote Link to comment Share on other sites More sharing options...
bunkhouse Posted September 2, 2019 Share Posted September 2, 2019 Probably a broken camshaft. Not common but not unheard of. A member at CZCC had one break in the center just a few months back. As I recall he discovered misalignment in the cam towers likely caused from improper installation. Quote Link to comment Share on other sites More sharing options...
grannyknot Posted September 2, 2019 Share Posted September 2, 2019 Your cam shaft is probably fine, the cam bolt backed off that sheared the woodruff key and now when you take the head off you will have little crescent shaped indents in the tops of you pistons where the valves hit. Your pistons will probably alright but you're going to have some bent valves to replace, don't crank the engine any more, just start pulling the head. I know how it feels Quote Link to comment Share on other sites More sharing options...
silverado22c Posted September 3, 2019 Share Posted September 3, 2019 Like Granny said, is the bolt even in the front of the sprocket where it attaches to the camshaft. Don't over think things. You show 2 videos of the full view, but nothing at where the 2 parts connect. Quote Link to comment Share on other sites More sharing options...
jjslade Posted September 3, 2019 Author Share Posted September 3, 2019 Thanks for the help guys, the sprocket had just come loose, gonna have to take the head off and change some, if not all the valves. Quote Link to comment Share on other sites More sharing options...
grannyknot Posted September 3, 2019 Share Posted September 3, 2019 14 hours ago, jjslade said: Thanks for the help guys, the sprocket had just come loose, gonna have to take the head off and change some, if not all the valves. The same thing happened to me once, engine only spun with the starter, I had 11 valve dents on the tops of the pistons but only 3 bent valves so you get lucky too. Quote Link to comment Share on other sites More sharing options...
Tony D Posted September 9, 2019 Share Posted September 9, 2019 No sheared drive pin? Seen that more than I've seen a sheared woodruff key (?) or broken camshaft! Quote Link to comment Share on other sites More sharing options...
grannyknot Posted September 9, 2019 Share Posted September 9, 2019 12 hours ago, Tony D said: No sheared drive pin? Seen that more than I've seen a sheared woodruff key (?) or broken camshaft! You're right, I said woodruff key but I meant the drive/locating pin. Quote Link to comment Share on other sites More sharing options...
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