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Old October 3rd, 2012, 04:12 PM   #1
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Default Engine ticking - even after shutdown

Just recently my engine has developed a ticking noise. It used to only occur while it wad running, now it continues on after I shut it off. It's a 4.7l stroker with about 15,000 miles, it's been doing it for maybe 2500 miles now. 258 crank and rods, 360 valve springs, crane cam, stock rocker arms, mopar lifters and pushrods with Keith black pistons Everything was new when the motor was built.


https://www.youtube.com/watch?v=qxY9...e_gdata_player
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Old October 3rd, 2012, 04:33 PM   #2
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Interesting?
Sorry Im no help
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Old October 3rd, 2012, 04:50 PM   #3
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I'd start by removing the valve cover.
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Old October 3rd, 2012, 04:59 PM   #4
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Take the same video but pull the cover off. And post it
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Old October 3rd, 2012, 05:17 PM   #5
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I've taken the cover off and ran it. Nothing seems loose, I did notice some pushrods were spinning really fast and some were barely spinning. I took a few rocker arms off and I noticed when tightening them back down it made the same noise when the springs started to compress.

I took video too, give me a few minutes to upload it
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Old October 3rd, 2012, 05:31 PM   #6
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https://www.youtube.com/watch?v=hAhT...e_gdata_player

Video with the valve cover off
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Old October 3rd, 2012, 05:37 PM   #7
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Here is the noise when I tighten the bolt. Nothing had much wear on it.

https://www.youtube.com/watch?v=wVWP...e_gdata_player
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Old October 3rd, 2012, 05:59 PM   #8
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When you had it running with the valve cover off did you see anything moving still after you shut it off?
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Old October 3rd, 2012, 06:26 PM   #9
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CHAD KEY from Ridge Offroad said," The rattle at idle is lifters and sounds to be piston rattle too... Which is normal on a 4.0... The ticking after it shuts off is the lifters bleeding down because of spring pressure and worn parts... Also somewhat normal unless its missing then it has a bad valve or bad lifter or broken piston which explains the excessive rattle... If that helps..."
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Old October 3rd, 2012, 06:42 PM   #10
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Quote:
Originally Posted by Sfa_Colorado View Post
CHAD KEY from Ridge Offroad said," The rattle at idle is lifters and sounds to be piston rattle too... Which is normal on a 4.0... The ticking after it shuts off is the lifters bleeding down because of spring pressure and worn parts... Also somewhat normal unless its missing then it has a bad valve or bad lifter or broken piston which explains the excessive rattle... If that helps..."
Honestly, thats kind of what I assumed when I started to hear it. What would be worn causing it? The pushrods all spinning at different speeds had me a little worried too, should that be addressed.

It runs great, doesn't miss at all.


Bruce,

Nothing moved once it was shut off. Well nothing that I could see.
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Old October 3rd, 2012, 06:44 PM   #11
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Would the stiffer valve springs that I have be a good reason the lifters are bleeding down?
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Old October 3rd, 2012, 07:05 PM   #12
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Chad Key Ridge Offroad: "Usually detonation is a major factor in failure in that combination... Ask if he had the block decked or not..."
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Old October 3rd, 2012, 07:07 PM   #13
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Chad Key Ridge Offroad:

The only really proper way to do that combo is with the kieth black forged kit that uses 4.0 rods and taller pin height pistons... With the 258 crank makes the proper piston height in the bore and lives a lot longer...
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Old October 3rd, 2012, 07:19 PM   #14
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The block was decked very minimal, I don't remember how much. The head was milled a few thou as well.

I appreciate the help.
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Old October 3rd, 2012, 07:22 PM   #15
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Rods spining That's normal... Is the motor missing or just making noise??
Who assembled the head and ground the valves ...
Maybe the installed height of the valves were not set right ...
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Old October 3rd, 2012, 07:24 PM   #16
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Chad From Ridge Offroad:

I don't know the specs on the 360 springs... But if the head was botched during assembly ... There could be broken springs ... If they didn't measure compressed height properly when figuring the rocker arms etc there are quite a few different things that could do that...
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Old October 3rd, 2012, 07:29 PM   #17
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Chad from Ridge Offroad:

The closer you get to zero deck the less issues you have with detonation... If it is detonating he may very well have a broken piston or two... Also gotta know what piston number was used to know what the final compression ended up being... If you don't mill the reliefs in the pistons on certain pistons it will cause too much compression also resulting in too much compression... There are a lot of variables in the 4.6-4.7 stroker combo that can go wrong...
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Old October 3rd, 2012, 07:29 PM   #18
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It's just making noise. It runs perfectly. The machine shop that did my machine work assembled the head as well. They said they had a tough time getting the installed heights correct, but they did get it. I'm pretty sure they are Mopar Performance 5.9l springs. The rocker arms are the original ones to the motor, I guess it's the one part I reused.
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Old October 3rd, 2012, 07:30 PM   #19
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I knew the rods spinning is normal, I just figured they would all spin at the same rate.
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Old October 3rd, 2012, 07:31 PM   #20
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Chad from Ridge Offroad:

Too much compression resulting in detonation... Lol if you measure cc's in the pistons then deck the block to achieve similiar numbers then you can get more compression with no chance of detonation... Just takes homework
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