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Did my timing chain jump out of time #384545
07/23/09 07:44 PM
07/23/09 07:44 PM
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ERIE PA home of the RENCH MOB
mike_vango Offline OP
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Car wouldn't run right. Timed it tuned it now the vacuum advance is pointing toward the front of the motor after we got it running right. Could the timing chain jump or skip a tooth during a banzai run? Engine is a 400ish hp 360.

Re: Did my timing chain jump out of time [Re: mike_vango] #384546
07/23/09 07:49 PM
07/23/09 07:49 PM
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MNobody Offline
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Did you time it with the vac advance unhooked? was the dist drive gear installed correctly?

Re: Did my timing chain jump out of time [Re: MNobody] #384547
07/23/09 07:53 PM
07/23/09 07:53 PM
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mike_vango Offline OP
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Yes and yes. Car was running strong. Parked it a couple days and it started but was chugging and sputtering.

Re: Did my timing chain jump out of time [Re: mike_vango] #384548
07/23/09 07:55 PM
07/23/09 07:55 PM
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How many miles on it?

Re: Did my timing chain jump out of time [Re: MNobody] #384549
07/23/09 08:00 PM
07/23/09 08:00 PM
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ERIE PA home of the RENCH MOB
mike_vango Offline OP
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this is the engines fifth summer. I don't know maybe 9000 miles or so. And maybe 20 times down the 1/4

Last edited by mike_vango; 07/23/09 08:03 PM.
Re: Did my timing chain jump out of time [Re: mike_vango] #384550
07/23/09 08:06 PM
07/23/09 08:06 PM
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Doubtful if the chain jumped. Even if you had used (which I doubt) a set with a nylon gear I would doubt if that is what happened.
What else did you do to it?

Re: Did my timing chain jump out of time [Re: mike_vango] #384551
07/23/09 08:06 PM
07/23/09 08:06 PM
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Chain and gears shouldn't be bad as long as it wasn't a loose fit to begin with. So the car was running fine when you parked it but you had to reset the timing and stuff the next time you started it?

Re: Did my timing chain jump out of time [Re: MNobody] #384552
07/23/09 08:09 PM
07/23/09 08:09 PM
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stumpy Offline
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What's the timing set at now?

Re: Did my timing chain jump out of time [Re: MNobody] #384553
07/23/09 08:17 PM
07/23/09 08:17 PM
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mike_vango Offline OP
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Quote:

So the car was running fine when you parked it but you had to reset the timing and stuff the next time you started it?


yea

Re: Did my timing chain jump out of time [Re: mike_vango] #384554
07/23/09 08:24 PM
07/23/09 08:24 PM

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Quote:

Quote:

So the car was running fine when you parked it but you had to reset the timing and stuff the next time you started it?


yea




I sure wish people would learn to state facts CLEARLY

You say "now the vacuum advance points......."

Well, since "we" don't know where it USED to point, that statement doesn't mean much

You using ?? what ?? for ignition, points, Mopar ECU, Pertronix, etc? Mallory/ Accell or some home made thing off yer Granpas tractor?

HOW FAR DID YOU move the distributor?

From the sounds of things, and "we" are only guessing, SOMETHING has changed. What kind of upper sprocket (they are NOT gears) are you using?

Re: Did my timing chain jump out of time [Re: mike_vango] #384555
07/23/09 08:30 PM
07/23/09 08:30 PM
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If it was chugging when you started it, could be your floats stuck or something carb related possibly. How does it run after re-timing it? By all means be clearly state your answers, we don't want to piss off the Moparts Q/A police

Re: Did my timing chain jump out of time #384556
07/23/09 08:30 PM
07/23/09 08:30 PM
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The timing chain has always been a weak link.I would pop compression on 1 cylinder and check your timing marks to see if they line up.I have my method on checking chains.And monitoring there conditions .Also all the nylon and alum powder .Get into the oil pick up


1969 Daytona 440 L9B410772 1970 Coronet 500 383 Presently owned 1970 Superbird 440 U 166242 1970 Superbird 440 U 174597 1970 Superbird 440-6 V 179697 1970 Coronet RT 440 U 224126 1968 Road Runner 426 J 134509 1970 Daytona Replica 318 G 178701
Re: Did my timing chain jump out of time [Re: WINGCARS_6970] #384557
07/23/09 08:44 PM
07/23/09 08:44 PM
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Quote:

The timing chain has always been a weak link.


Only if you have the nylon sprocket and fairly high milage. Steel sprockets and good chain rarely give any problem.

Re: Did my timing chain jump out of time [Re: MoparforLife] #384558
07/23/09 08:52 PM
07/23/09 08:52 PM
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Quote:

Quote:

The timing chain has always been a weak link.


Only if you have the nylon sprocket and fairly high milage. Steel gears and good chain rarely give any problem.




Now now, those are sprockets not gears.


I want my fair share
Re: Did my timing chain jump out of time [Re: SomeCarGuy] #384559
07/23/09 09:00 PM
07/23/09 09:00 PM
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Quote:

Quote:

Quote:

The timing chain has always been a weak link.


Only if you have the nylon sprocket and fairly high milage. Steel gears and good chain rarely give any problem.




Now now, those are sprockets not gears.






Re: Did my timing chain jump out of time [Re: SomeCarGuy] #384560
07/23/09 09:06 PM
07/23/09 09:06 PM
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Quote:

Quote:

Quote:

The timing chain has always been a weak link.


Only if you have the nylon sprocket and fairly high milage. Steel gears and good chain rarely give any problem.




Now now, those are sprockets not gears.



Boy are we picky tonight. Fixed it you satified. I think everybody understood the way it was but since you insist.

Re: Did my timing chain jump out of time [Re: MoparforLife] #384561
07/23/09 09:43 PM
07/23/09 09:43 PM
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The newer stuff may have better gears sprockets etc .But I had a 74 318 1 owner challenger 40K orig miles .Chain was slapping plastic coming off it.I check any car Im working on by my method.Before chain lets go

Diagnose how bad a timing chain was on scene .Was with pair of gloves grabbing fan belt to move crank pulley.Or socket turning motor if I had the socket. But with distributor cap off observing rotor movement in relation to rotation of the engine.Lets you know it time to replace timing chain by very little lack of rotor movement


1969 Daytona 440 L9B410772 1970 Coronet 500 383 Presently owned 1970 Superbird 440 U 166242 1970 Superbird 440 U 174597 1970 Superbird 440-6 V 179697 1970 Coronet RT 440 U 224126 1968 Road Runner 426 J 134509 1970 Daytona Replica 318 G 178701
Re: Did my timing chain jump out of time [Re: WINGCARS_6970] #384562
07/23/09 09:51 PM
07/23/09 09:51 PM
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How would that method tell you if your chain and sprockets were bad? You could have slop at the cam/distributor gear or slop where the distributor shaft meets the drive gear?

Re: Did my timing chain jump out of time [Re: WINGCARS_6970] #384563
07/23/09 10:10 PM
07/23/09 10:10 PM
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Quote:

.Chain was slapping plastic coming off it.I check any car Im working on by my method.Before chain lets go




Yep plastic sprocket teeth. Potential problem. Once changed out with a good set it is unlikely to happen again.

Re: Did my timing chain jump out of time [Re: MNobody] #384564
07/23/09 10:16 PM
07/23/09 10:16 PM
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stumpy Offline
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Quote:

How would that method tell you if your chain and sprockets were bad? You could have slop at the cam/distributor gear or slop where the distributor shaft meets the drive gear?



There wouldn't be so much slop that the crank would move a good bit before the rotor moved. It is a good way to tell if the timing set is bad.

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