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4.0 interference?

Chillfactor

New Member
Joined
June 24, 2017
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City, State
PELHAM
Year, Model & Trim Level
2004 XLT
Hello everyone
It is great to get out and see everyone supporting each other and being cordial by doing so! Thank you..

I read a lot and did several searches on my particular issue and if I missed it my apologies. I have a client that purchased an engine,4.0, from a salvage yard. Well the choice was made to use the harmonic balancer that came on the engine Well on down the road it works loose and starts self destructing. As this is going on its trashing the gear for the jack shaft chain so it free wheels and bottom and top are now in separate zip codes.. Ok so here is knowledge I seek...Can I use the cam alignment tool on the back of the right head camshaft and time the entire top end with it? Since that gives me a definite known position within the mechanisms other known meaningful positions to align with? Also I don't understand that the crankshaft can be rotated freely with zero contact with valves and the cam shafts rotate freely without any hesitation,,, Where are the bent valves? With this being a interference engine why would contact not be felt during rotation.
Whew! Sorry the long drawn out story
And Thanks in advance to those who hit me up with some knowledge
Dave







So my question is could I just use the timing tool for right hand cshaft to get the top end and bottom end in time. So okay here is the weird thing
 






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