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171 Posts
ok, so im driving down the road and the truck just took a shit. it was like i just turned off the key. luckily i was about 2 miles from home and a wrecker had me home in no time. i was thinking best case scenario and figured my crank sensor went bad or i melted one of the wires. a visual check and scan showed no problems. pulled the valve cover and turned the motor and rockers did nothing. SWEET!
next step was to pull the front cover. i totally expected a broken timing chain but it wasnt the case. when the cover came off, the cam gear fell out and hit the ground. all 3 bolts sheered off. i figured the cam locked up and spun the gear off with but the cam spins free and feels completely normal. i was actually logging the VE table when this happened and nothing looked out of the ordinary in the log. just all the sudden the rpm just dumped. motor still has oil pressure when trying to crank it over.
really dumb question but what are some possible causes other than the bolts backing out and giving the gear enough wiggle room to sheer off (had this happen with converter bolts before. i also considered them possibly being over torqued. you can see on the cam retainer plate that the cam gear was rubbing.
and just for fun, does anyone have experience with how weisco pistons hold up to ferrea valves? what are the odds that a valve bent a callies rod? this motor has less than 1,200 miles on it!
next step was to pull the front cover. i totally expected a broken timing chain but it wasnt the case. when the cover came off, the cam gear fell out and hit the ground. all 3 bolts sheered off. i figured the cam locked up and spun the gear off with but the cam spins free and feels completely normal. i was actually logging the VE table when this happened and nothing looked out of the ordinary in the log. just all the sudden the rpm just dumped. motor still has oil pressure when trying to crank it over.
really dumb question but what are some possible causes other than the bolts backing out and giving the gear enough wiggle room to sheer off (had this happen with converter bolts before. i also considered them possibly being over torqued. you can see on the cam retainer plate that the cam gear was rubbing.
and just for fun, does anyone have experience with how weisco pistons hold up to ferrea valves? what are the odds that a valve bent a callies rod? this motor has less than 1,200 miles on it!