440 intermediate screeching noise
#1460256
06/30/13 01:09 PM
06/30/13 01:09 PM
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Joined: Jan 2005
Posts: 2,179 S.E. Conn
Hoof Hearted
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 2,179
S.E. Conn
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Got a 76 440 in a 70 Charger Runs fine but...
No idea of internals other than has mild cam(buddy I purchased from doesn't remember what he installed "but it was purple") could be 3 - 5 mins after running and a loud Screeching appears coming from front or upper pass side of engine. Car sat long through winter not running. Fresh oil 5/30 change last spring(2012) when bought and Went for body n paint. Oil PSI is consistantly strong 75-80 cold, 45-50 hot idle. I changed the Mechanical fuel pump last week as that side of motor noise is coming from, same screech occasionally reappears. Removed all drive belts to eliminate pulleys or alternator. Changed water pump recently also. Noise tone changes or lessens when I remove valve cover breather.
Valve cover to come off next. Thinking blocked oil passage or scored/scorched rocker shaft or rocker arm? Again, some days the noise is there, others not a peep. Am considering Seafoam or Marvel mystery before fresh oil change. Currently has conventional oil and Wix oil filter.
Haven't done anything to trannny except add 1 quart when first took delivery of car. Mentioning because I know noises can travel and mislead.
Been awhile since I have posted here - Many thanks for your time and thoughts.
2005 300C Hemi 2014 Ram ProMaster 2500
I Rekey, Repin old Chrysler locks and cut keys by code
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Re: 440 intermediate screeching noise
[Re: Hoof Hearted]
#1460258
06/30/13 01:33 PM
06/30/13 01:33 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Yes I'd pull the valve cover on that side & good visual. I'd more suspect the oil slinger/tchain, something in that area. The pump vanes were far enough from the housing (& they usually are way too far)?. Could pull the pump/pushrod & feed the carb from a can suspended like a bag of plasma in a hospital but I'd think more likely the first two. Holler how it goes
live every 24 hour block of time like it's your last day on earth
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Re: 440 intermediate screeching noise
[Re: RapidRobert]
#1460259
07/01/13 09:47 PM
07/01/13 09:47 PM
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Joined: Jan 2005
Posts: 2,179 S.E. Conn
Hoof Hearted
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 2,179
S.E. Conn
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So I removed the ps valve cover, rockers n shaft - noted forward most shaft bolt was missing spacer tab and instead had few washers...
I replaced with proper tab, cleaned and inspected entire assembly, no oil flow issues, shaft oiling holes installed properly downward towards springs. Reassembled n installed.
Fired it up - no schreech noise for first minute then started again.
Here's where it gets weird: When I remove the pcv valve breather she quiets down!
Ran it a few mins, noise comes n goes.
For poops n giggles I swapped in another distributor. Zero Noise!! - for only two mins cuz while patting myself on the back I reconnected the pcv valve n the screech came back louder about 10 seconds later so abruptly I jumped.
Any Thoughts? Not in a huge hurry to remove water pump n timing cover but I think that's next.
Point to note, has old crappy Moroso chrome valve covers(free) and a cheapo set of chrome breather n pcv combo - the pcv rattles back n forth noticably when installed; Power Brake vacuum line runs to rear of intake, TorkerII and pcv runs from front of carb, Carter 625cfm.
2005 300C Hemi 2014 Ram ProMaster 2500
I Rekey, Repin old Chrysler locks and cut keys by code
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Re: 440 intermediate screeching noise
[Re: Mr.Yuck]
#1460265
07/02/13 02:27 PM
07/02/13 02:27 PM
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Joined: Jan 2005
Posts: 2,179 S.E. Conn
Hoof Hearted
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 2,179
S.E. Conn
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Yes, clutch fan is old/wiggles but I mentioned all belts were removed and issue still there.
For the heck of it I went out this afternoon, poured in a small bottle of Marvel Mys oil and fired it up, Minus the Breather cap(ds) or the PCV hose/cap. Ran perfectly for ten mins. As soon as i reconnected PCV she began screeching again. Disconnected it and screeching almost went away, revved motor few blips and came back.
Been playing with these 25 years. This is a first for me.
2005 300C Hemi 2014 Ram ProMaster 2500
I Rekey, Repin old Chrysler locks and cut keys by code
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Re: 440 intermediate screeching noise
[Re: Hoof Hearted]
#1460266
07/02/13 02:42 PM
07/02/13 02:42 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Yes, clutch fan is old/wiggles but I mentioned all belts were removed and issue still there.
For the heck of it I went out this afternoon, poured in a small bottle of Marvel Mys oil and fired it up, Minus the Breather cap(ds) or the PCV hose/cap. Ran perfectly for ten mins. As soon as i reconnected PCV she began screeching again. Disconnected it and screeching almost went away, revved motor few blips and came back.
Been playing with these 25 years. This is a first for me.
I wondr if your baffle is making slight contact w/ the rocker assembly
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Re: 440 intermediate screeching noise
[Re: krisiesmopes]
#1460272
07/03/13 08:46 AM
07/03/13 08:46 AM
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Joined: Jan 2005
Posts: 4,862 the frozen wastes...
Pale_Roader
Swears too much
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Swears too much
Joined: Jan 2005
Posts: 4,862
the frozen wastes...
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In an absolute bind one time with my Charger, i was forced to buy the only big block i could find locally... a "good" 440 still in its attractive (though completely trashed) 67 Imperial carrying case. The wiring in the Imp had been so mangled that there would be no starting it up before buying it, and the owner could not tell me exactly why it was parked (was selling it for some long lost relative). So i bought it, dumped it in the Charger, crossed my fingers and started it up.
Well... didn't take a second to learn why it had been parked... and i mean aside from the plumes ov blue smoke out the sidepipes. The engine had this absolutely brutal sounding screech. It literally sounded like the crank was trying to scrape its way through the oil pan... sounding exactly like a very slow grinding wheel on sheet metal. We couldn't diagnose it. No dented sheetmetal, nothing loose, no metal in the oil, no hot spots, nothing. I just ended up driving the damn thing, and after a couple weeks the noise had pretty much gone (steadily) away. Man it sure got some looks in the first week though... that noise was LOUD.
That engine burned just too much oil to last more than a few months in the car, but it had served its purpose. I was actually extremely excited to finally get to pull it apart... I'd been anticipating this since the initial start-up. We couldn't find ANY evidence ov grinding/scraping/anything that would cause this noise. The mystery remains... a mystery.
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Re: 440 intermediate screeching noise
[Re: challengermike]
#1460274
07/04/13 02:11 AM
07/04/13 02:11 AM
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Joined: Jan 2005
Posts: 2,179 S.E. Conn
Hoof Hearted
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 2,179
S.E. Conn
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The large port at the lower front of the Carb was loaded w/black crap, I shot in bunch of carb cleaner spray n scraped out the build up crud.
Zero noise last couple of days.
Make any sense? Gotta grab my rebuild kits n booklets I loaned to a buddy, i'll remove carb n thoroughly clean it.
Any further thoughts? other than it allegedly screaming "I Want a Hemi". That one was especially helpful.
2005 300C Hemi 2014 Ram ProMaster 2500
I Rekey, Repin old Chrysler locks and cut keys by code
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Re: 440 intermediate screeching noise
[Re: Hoof Hearted]
#1460275
07/04/13 10:51 AM
07/04/13 10:51 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
The large port at the lower front of the Carb was loaded w/black crap, I shot in bunch of carb cleaner spray n scraped out the build up crud.
Zero noise last couple of days.
Make any sense? Gotta grab my rebuild kits n booklets I loaned to a buddy, i'll remove carb n thoroughly clean it.
Any further thoughts? other than it allegedly screaming "I Want a Hemi". That one was especially helpful.
sounds more like a vacuum problem maybe.. and as far as the hemi... only unless you want your wallet totally empty for no performace gain.
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