First start up, aweful noise

[deebo05]

Have you tried to data log the cam angles to see if its actually the vct? Quicker and easier than pulling the cover.

 

[Wes06]

Well it was finally warm enough around here to not freeze my ass off working on the car.

Pulled front cover off, nothing looks damaged in the timing set, looks like its time to pull the motor and full tear down and build my new motor, ugh was hoping to not have to do this yet

 

[Hotrodtinker]

Sorry to hear this Wes. Being a diesel mech for so long I've heard and seen so many weird things that make you go WTF?!? Sometimes you go through everything and just can't figure it out. Hope you get it sorted out soon. Have you tried using a stethoscope to help zero in on the noise? I know it would be difficult since you don't want to run the engine too long but this is something I've used many times to help diagnose noise issues. Just a thought.

 

[Wes06]

well i finally got around to uploading the vid of the noise. god it sounds aweful...lol

https://www.youtube.com/watch?v=Dmb1MRcWi7I

 

[Hotrodtinker]

I'm only on my iPad with a shit speaker so I'll just try and help eliminate stuff (though you've prob already checked them). Have you looked at:

-exhaust manifold? Make sure it's not cracked/warped.
-intake? Same as exhaust. Either could make a noise similar to what you're describing.
-made sure there aren't any stuck lifters or other valve-related parts?
-on some diesels there's a pressure relief valve on the transmission that can make some weird noises if it's damaged or stuck open. Not sure if we have anything like that on these but I'd check each and every connector and valve to eliminate them as possibilities.

I'm sure someone more experienced will chime in but hopefully this will help a little. If all else fails you should try C4! Hahaha... Jk! Best of luck amigo!

 

[Wes06]

I took the covers off, rotated engine by hand and all the followers seemed to move correctly, didnt see any bound up.

Exhaust...........maybe....thats one hell of an odd noise to be exhaust though but having Longtubes on I wouldnt put it past having a gasket with a leak, will look into that

 

[BlindGUYnAR]

Sounds like the rotors in th SC to me, but hard to tell from that video

 

[Hotrodtinker]

I took the covers off, rotated engine by hand and all the followers seemed to move correctly, didnt see any bound up.

Exhaust...........maybe....thats one hell of an odd noise to be exhaust though but having Longtubes on I wouldnt put it past having a gasket with a leak, will look into that

Hmm... Could possibly be a broken valve spring? (I'm making educated guesses here just hoping to help at the moment)

I agree about the exhaust but I've heard a similar kind of noise from a broken manifold on a diesel a couple of times. The high compression was making a wumpwumpwump kind of tapping noise (that's the proffesional scientific explaination )

Blindguy might be right on the money but I have little experience with superchargers (we have some engines in the military that have them but most have turbos).

 

[Wes06]

good guess on the SC, but that was the first thing i discounted.

Removed the serp belt first thing and still made it.

So of things its not, SC, power steering pump, water pump, A/C compressor, idler pullies, tensioner, etc

 

[Hotrodtinker]

I'm def not making light of a shitty situation but vehicle noise issues always make me think of the last one...

http://www.lotsofjokes.com/pilot_checklist.asp

 

[Wes06]

oh shit theres a midget in there? brb....<grabs my rifle>

 

[Hotrodtinker]

Rifle?!? Best be a .22 short! BWAHAHAHA!!

 

[deebo05]

how did everything look when you took the covers off, as far as oiling wise?

it sounds like the phaser but could be a few lash adj. not priming up.
I have had brand new phasers take a dump.

a data log of cam angles will tell for sure, they will bounce around pretty good.

 

[Wes06]

the cam didnt have any scarring or anything that would point to oil issues.

How would i tell if the lash adjusters not priming 100%?

I ran it for about 7 minutes to get it up to temp<per DOB/sqidd> to see if it was the chain tensioner, I imagine the lash adj. would prime up by that point.

The above vid was around the 6-7 min mark of running

 

[deebo05]

easiest way is with a stethoscope.

I have had lash adj never prime up if they catch a air pocket in them.

if it was me diagnosing, I would start with eliminating the vct or chain slap being the culprit.

if you can get a quick log of actual cam angles (2-3 min) I can look at it see whats going on.

 

[Wes06]

well i pulled the exhaust gaskets from the headers, a few small black spots, but nothing that looks like hot exhaust shooting through an obvious opening.

still keeps looking worse, bah.

Getting to logging cam angles at this point is putting header back on, timing cover, valve covers, re-filling coolant and oil

 

[Totheboards]

One idea I had with a Jeep motor was downloading an audio editing app, record sound at a steady rpm (700-ish rpm idle in the Jeeps case), then pin point and count the spikes. I had almost exactly 6 spikes per second, which correlates to 360 times in a minute... 1/2 the frequency of the crank.... the cam and valve train speed. If you played the wood block as a kid, you probably don't need an app!

 

[sportinawoody]

lifter not oiling and or tappet dry. if it is a lifter that is dry, i usually dont see them quieten up until i actually drive the car to load the engine unless i run it for 30 minutes. log the cam angles and stft's to see if you can isolate something in the cam timing and if not, drive it around the block easy and see if your valve train does prime itself under load

 

[Wes06]

ugh i hate thinking of driving it around the block with this noise.....

fix it....or something worse breaks...lol

well I guess ill try to start putting it back together and maybe be the hail mary before ordering parts

 

[Wes06]

@totheboards, i downloaded that app, then another to convert the video to mp3 to use on the previous one.

counted spikes at roughly 15 a second, seems to fast for a cam related issue