Woh! Did it snap between lobes or at the drive end where the belt is? That will definately keep it from starting. You might want to pull the pan off after your pour a ton of cheap oil and/ or some engine flush. I never was a fan of engine flush in high mileage motors or using it in a running motor. If it is used in a running motr a higher than reccomended viscosity oil should be used. So, just think about flushing out some of the tiny metal particles that dang cam might have put into the motor. I am a perfectionist so I overdo things so don't let my suggestion or comments freak you out. The oil probably barely pumped through the circuit and if there is any metal, it will fall into the pan and settle into the sludge that is in all pans it tends to get trappped there and that is why I reccomended removing the pan after pouring oil through so you could wipe out this sludge. You certainkly have 90% off any metal cast off by the cam laying in the head. It is a good thing it never started and really pumped stuff around and possibly thrown the broken cam through something and damaged it. Including you. So, it actually turned out well that you caught it and it failed nefore it ran, that would have been much worse.
You can pour some cheap oil through and/or wipe out the cylinders if you want to over do it like I tend to do.
I am very glad you caught the problem, good eye by the way and your thanks means a lot as not everyone says that.
Is till can't believe it snapped on you, very unusual. You will certainly get a head from the place you got the damaged one that they consider top shelf or built from a low mileage core.
If you need anything else when you are getting it back together we are here and glad to help.
PS I just caught that it was the second head. Unreal. I would freak. If you use the search window on the site, it will help you find reputable head rebuilders near you. It will work if you search for anything about heads or re-manufactured heads. It knows where you are by referencing your IP address. All links in this site have stood the test of tiem and would not be here if they did not have a good performance record.
Thursday, November 17th, 2011 AT 5:30 AM