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SVTPerformance's Chain of Restaurants
Pics and Videos Buffet
Chronicles of SneakySnakes | Vol III
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<blockquote data-quote="paintless302" data-source="post: 15582410" data-attributes="member: 74264"><p>Morgan got the ol girl naked down to the shortblock;</p><p></p><p>[ATTACH=full]708549[/ATTACH]</p><p>[ATTACH=full]708550[/ATTACH]</p><p></p><p>Drivers side</p><p></p><p>[ATTACH=full]708551[/ATTACH]</p><p></p><p>Passenger side</p><p></p><p>[ATTACH=full]708552[/ATTACH]</p><p></p><p>[ATTACH=full]708553[/ATTACH]</p><p>[ATTACH=full]708554[/ATTACH]</p><p></p><p>And here is the location of our culprit noisemaker;</p><p></p><p>[ATTACH=full]708555[/ATTACH]</p><p></p><p>You can see one of the rollers is actually damaged from bouncing around on the cam lobe.</p><p></p><p>[ATTACH=full]708556[/ATTACH]</p><p></p><p>One of the lifters got debris either in the main body oil passage or the check valve and was not pumping up and/or holding oil pressure. When that happens, you lose line-to-line contact with the pushrod/cam and you get that familiar clickity racket.</p><p></p><p>If you need some refresher on hydraulic lifters I found these to be particular helpful. The chrysler video especially, why they don't make handy instructional videos like that anymore I'll never know!</p><p></p><p></p><p></p><p>On top of losing contact with the rest of the valvetrain, with a bad lifter you stop the pushrod from loading the rocker arm squarely and can give it some nasty side loads. I think this was the reason for damage on the rocker which sat atop the failed lifter. The additional vibration may have caused the trunnion to move laterally inside the rocker (or the rocker to move laterally on the trunnion). Either way, it was trying to push out that stamped cap which keeps the bearings in place, and ended up chipping it. If that cap had come off all the way and released all those needle bearings into the oiling system, I would have had a worse day.</p><p></p><p>[ATTACH=full]708557[/ATTACH]</p><p>[ATTACH=full]708558[/ATTACH]</p><p></p><p>The lifters were replaced, along with the rocker, and the heads inspected. Everything looked ship shape with no other visible damage, so the re-assembly process began.</p><p></p><p>[ATTACH=full]708559[/ATTACH]</p><p>[ATTACH=full]708560[/ATTACH]</p><p>[ATTACH=full]708561[/ATTACH]</p><p></p><p>This was also a good opportunity to replace those crappy Belanger paper gaskets with some oem steel crush ones. Don't know why the PO had those installed.</p><p></p><p>[ATTACH=full]708562[/ATTACH]</p><p></p><p>She should be back better than new soon. At least I had an opportunity to poke around inside the motor and check things over on someone else's dime. Could of been worse!</p></blockquote><p></p>
[QUOTE="paintless302, post: 15582410, member: 74264"] Morgan got the ol girl naked down to the shortblock; [ATTACH=full]708549[/ATTACH] [ATTACH=full]708550[/ATTACH] Drivers side [ATTACH=full]708551[/ATTACH] Passenger side [ATTACH=full]708552[/ATTACH] [ATTACH=full]708553[/ATTACH] [ATTACH=full]708554[/ATTACH] And here is the location of our culprit noisemaker; [ATTACH=full]708555[/ATTACH] You can see one of the rollers is actually damaged from bouncing around on the cam lobe. [ATTACH=full]708556[/ATTACH] One of the lifters got debris either in the main body oil passage or the check valve and was not pumping up and/or holding oil pressure. When that happens, you lose line-to-line contact with the pushrod/cam and you get that familiar clickity racket. If you need some refresher on hydraulic lifters I found these to be particular helpful. The chrysler video especially, why they don't make handy instructional videos like that anymore I'll never know! On top of losing contact with the rest of the valvetrain, with a bad lifter you stop the pushrod from loading the rocker arm squarely and can give it some nasty side loads. I think this was the reason for damage on the rocker which sat atop the failed lifter. The additional vibration may have caused the trunnion to move laterally inside the rocker (or the rocker to move laterally on the trunnion). Either way, it was trying to push out that stamped cap which keeps the bearings in place, and ended up chipping it. If that cap had come off all the way and released all those needle bearings into the oiling system, I would have had a worse day. [ATTACH=full]708557[/ATTACH] [ATTACH=full]708558[/ATTACH] The lifters were replaced, along with the rocker, and the heads inspected. Everything looked ship shape with no other visible damage, so the re-assembly process began. [ATTACH=full]708559[/ATTACH] [ATTACH=full]708560[/ATTACH] [ATTACH=full]708561[/ATTACH] This was also a good opportunity to replace those crappy Belanger paper gaskets with some oem steel crush ones. Don't know why the PO had those installed. [ATTACH=full]708562[/ATTACH] She should be back better than new soon. At least I had an opportunity to poke around inside the motor and check things over on someone else's dime. Could of been worse! [/QUOTE]
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Chronicles of SneakySnakes | Vol III
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