This will kill you

[StockMan]

My neighbor from a few houses down, that I don't have much to do with, saw my Charger in my driveway and came over.  He was impressed with the car and said he had a 67 Mustang way back and was a pro at tuning the old motors (ok).  Anyway, my Charger was sitting there running and he asked if he could see the motor, I said fine and popped the hood.  He began examining and I went to the back of the car for a short time until suddenly I heard three full throttle revs with the last one held for a bit.  I ran back to the front and yanked his arm out from under the air cleaner.  After the motor returned to an idle there was a mild squeal that sounded like it was coming from the ps pump, which I assumed was a belt.  Needless to say I sent my neighbor home.

I drove the car for a few miles after that with no noticable loss in power, running good.  I decided to take the belts off briefly to make sure it was in fact the ps pump.  The squeak, which was now intermittent and only at idle and at operating temp, was actually coming from inside the driver side of the motor.  The sound, which is similar to that of a cricket, is most noticable when idling down and it is still there at idle but less and again intermittent.  I took two plugs out of that side (driver) and tested the compression and they were both the same so I ruling out a broken ring (at least until I can test the remainder of them).  What else could this be?  Rod bearing that moved slightly and rubbing?  Oil pump?  With a pc of heater hose I listened around on that side of the motor and the sound seems more noticable on the front side of the motor.  

Thanks

[Brock Samson]

  but you should'a shoved his hand into the fan, then the squealing would be OK... 

[440]

Ouch... What ever happened to the look but don't touch mentality... 

[c00nhunterjoe]

Pop the valve cover. Check for bent pushrod

[FLG]

Did you also remove the alt and wp and/or AC belt to make sure its not any other accessory?

[tan top]

Did you also remove the alt and wp and/or AC belt to make sure its not any other accessory?

yeah good point , might be water pump  or  alternator bearings   

[b5blue]

What the hell gets into people?     You may want to inform Mr. Know-It-All he has a repair bill lawsuit coming his way. I was thinking possible bent push rod also. 

[4cruzin]

Unbelievable!!   I would be really p!ssed.   

[StockMan]

Thanks for your responses.  I did have all the belts off when I was checking this.  Sounds like a good idea to check the push rods, I'll do that.  I wasn't sure if this would cause the squeak or not but there is some valve train noise on that side (driver).   Interestingly enough, there is no loss of power, and the noise doesn't start until the motor reaches operating temp.
I forgot the mention, this is a 383 4bbl motor.

[Dodgecharger74]

I had a 273 that had a squeak noise when running also had low oil pressure  It was a spun rod bearing 

[StockMan]

Was the noise only at operating temp, or was it always there?

[chargermike]

i would have kicked his ass. what a dumbshit. who in his right mind would touch a another mans car. let alone rev up a motor. if there is damage i would hand him the bill. good luck with your car.

[StockMan]

I forgot to mention that my oil pressure is right up there (55-60 idle 75 driving).  Can a rod bearing move slightly and cause a noise like this?

[limelightsuperbird528]

Did you figure this out?

[skip68]

Cam bearing.     My cam bearings did that.   

[c00nhunterjoe]

Indeed, what happened? To the car and the neighbor

[Daytona R/T SE]

Cam bearing.     My cam bearings did that.   

Yep.

[A383Wing]

possible rocker arm making squeak noise on the shaft as well

Bryan

[Indygenerallee]

   

[Fred]

i would have kicked his ass. what a dumbshit. who in his right mind would touch a another mans car. let alone rev up a motor. if there is damage i would hand him the bill. good luck with your car.

My sentiments exactly. But I think I would have done worse to him, I'd have been spitting chips for sure.

[Cooter]

Although I see it and occasionally do it myself to "Clear out" a vehicle that is loading up, I can't understand why some folks think Revving the sh*t out of engines does them some kind of "Good"?

If they only knew how hard that was on cranks, rods, bearings, pistons, etc. they wouldn't ever do it unless nessesary.
I had a friend who would "Build" engines and fire 'em up, and the FIRST thing he would do is plant his foot on the floor nd take a drink of beer stating proudly, "If it holds up to this, it'll run forever"...

[c00nhunterjoe]

I had a friend who would "Build" engines and fire 'em up, and the FIRST thing he would do is plant his foot on the floor nd take a drink of beer stating proudly, "If it holds up to this, it'll run forever"...

As crazy as it sounds, I suppose if it doesn't grenade then he is right.

[Dino]

Have you spoken to your neighbor since then?  I would politely inform him that damage was done to the engine and that you will be taking it to a shop for repair.  At that time you kindly tell him that you will get him a detailed and itemized estimate which you will present to him so he can pay you to have the work done.

If he makes a stink it's small claims court time.

[Indygenerallee]

Have you spoken to your neighbor since then?  I would politely inform him that damage was done to the engine and that you will be taking it to a shop for repair.  At that time you kindly tell him that you will get him a detailed and itemized estimate which you will present to him so he can pay you to have the work done.

If he makes a stink it's small claims court time

Dino is exactly right!

[skip68]

   Any update?   

[JB400]

How'd this turn out?

[Cooter]

Judge Judy's Court I suppose.

[ACUDANUT]

Gonna leave us "hangin"

[1974dodgecharger]

dont they all leave us hanging....

[lexxman]

 Did you find the problem?

[vegasmike]

same noise happened to me,I had four bent pushrods

[hatersaurusrex]

Sounds like he was trying to impress you by showing that he knew how to rev the engine from from outside the car.   OMG WHAT AN EXPERT

[StockMan]

A quick update on this (sorry for leaving everyone hanging).  
Well last winter I pulled the 383 and freshed up a low mile 440 that I installed this spring (2012).  The noise was still there!  After driving it for a while, I began to develop a trans fluid lead, and I noticed that the torque converter was draining back at a much higher rate than it was previously.  The tranny did have a new seal when installed.  Later in the summer, maybe 400 miles later or so, the 'Chirp' was gone.  I am in the process of pulling this trans in place of another that I have here that is completely rebuilt by a reputable place.  Its a later model 727, 1975 vintage.

So, it ended up being the trans after all that.  I still have the 383 intact and will probably freshen it up later on and re-install it.  My goal was to try and stay as close to the stock condition as possible.
It was odd to say the least, I had many people listen to the sound, and nobody could figure it out, and nobody even came close to suggesting that it could have been the trans.

I'm not sure what the rev could have done to the trans, I don't know to much about the internal workings of the 727.  It did have 96,000 miles on it.

[FLG]

Could be the flexplate bolts backing out...common thing if there not loc tighted in.

[StockMan]

The flex plate bolts were all tight when removed.  I am going to have the trans looked at, and probably rebuilt so hopefully at that time I can see what the real issue was.
I wish I could have figured it out before swapping motors though.  That being said, I installed a crane 'Fireball' cam in the 383 which probably took away from the power. 
The stock 440 pulls quite a bit harder.  The 440 is a bit sensitive to fuel though, likes premium, and even them I get the odd ping.