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Old 03-19-2012, 02:43 AM   #1
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Originally Posted by JFP in PA View Post
Unless you have accumulated plastic shards in the oil sump, no. And even if you have got shards, you still don't know which pads/paddles need to come out until you look at them. Quite often on five chain motors the smaller paddles between the cams are the issue. But you still have to look.............
holy crap... and I bet you can't find out which chain is the culprit just by looking at them. This is not good news... I've had it. I'll sit and watch this thread for a bit
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Old 03-19-2012, 02:50 PM   #2
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Originally Posted by madmods View Post
holy crap... and I bet you can't find out which chain is the culprit just by looking at them. This is not good news... I've had it. I'll sit and watch this thread for a bit
Actually, yes you can see which chain paddle wear pad is beat, often it is more than one. The plastic wear pads were meant to do just that: Absorb the wear rather than have metal to metal wear, which would have circulated through the engine and killed the bearings. You can see obvious wear on the pads posted above by ProDriver, the two on the left are toast.....
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Old 03-20-2012, 01:31 AM   #3
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Old 03-27-2012, 05:50 PM   #4
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We have pulled apart and built numerous S engines over the last couple of years.. ALL OF THEM have worn out cam tensioner pads and crank to IMS pads. All of them. No exceptions. The new cam tensioner pads are made out of much better material, and we have pulled covers on multiple engines we built from several years ago and the new pads are not wearing anywhere near as fast as the OE pads that shipped with the engines.

When something comes in for a top end rebuild, we are going deep dive and pulling the rest of the engine apart and replacing all the plastic bullsh_t in these engines.. as SOP we are replacing the rod bolts/crank carrier bolts with ARP and measuring the drag on the crank in the carrier warmed up (we are looking for a certain inch/lb measurement)

Your engine will fail these parts, and it will cause a lot more damage if you don't do something about it now. The deviation *could* be something simple like out of adjustment, but I'm guessing its a combination of worn plastic bits.



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