Re: 440 stopped running, why??
[Re: GTXMEX]
#1970694
12/16/15 03:54 AM
12/16/15 03:54 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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no on the pan Q & you'd set the dampener slit to 15 BTDC and move housing till magnet is dead even with the tooth
live every 24 hour block of time like it's your last day on earth
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Re: 440 stopped running, why??
[Re: GTXMEX]
#1971560
12/17/15 05:20 PM
12/17/15 05:20 PM
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Joined: Jan 2003
Posts: 10,949 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,949
Freeport IL USA
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You have pulled the dist and the dist drive out of the motor. The only way you will know if the timing gears have jumped is to pull the timing cover and look.
Are we sure he didn't just loose ignition for a moment? What are you running for an ignition system? You have a rev limiter, which might suggest maybe an MSD? I went back and read the 1st post. He heard pinging, then felt loss of power (hit rev limiter, ignition failure, shut down spark, flood plugs with gas (6,000 rpm, no spark). Then it idled at lower then normal rpm (ign came back, but now the plugs are gas fouled). Lost oil pressure (sudden motor shutdown from high rpm, sudden reduction in vehicle speed, worn bearings from NOS?) Then he turned ignition off and hauled it home. No place does he say he checked for spark. He was more concerned about no oil pressure, and pulled the dist & dist drive, then the oil pump and disassembled it.
Oil pump wear consistent with a 40K motor. Lower compression numbers with the rear 2 cylinders consistent with a dual quad street motor probably often running rich. He is showing decent oil pressure with a fresh pump on a cold motor with fresh oil, but that may not be telling the true condition of the rods and the rod bearings with consideration of multiple 6500 rev limiter hits and the addition of nos.
There may or may not be a timing issue, and its something I would be looking at. Baring a timing chain issue, things are adding up to an ignition loss, or partial ignition failure compounded by a worn motor that has seen 40,000 miles of hard use.
It may run if he brings #1 up on compression and gets the dist & dist drive in correctly, adds fresh oil, and new plugs, presuming it has consistent spark. Gene
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Re: 440 stopped running, why??
[Re: GTXMEX]
#1974320
12/22/15 02:31 AM
12/22/15 02:31 AM
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Joined: Jan 2003
Posts: 10,949 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,949
Freeport IL USA
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Doug, several others have offered it the chain could be loose/sloppy or tooth broke on timing gear and jumped. That would seem reasonable to me and explain how the distributor became physical position wrong. How else would you explain it? The dist was pulled out of the motor, and the dist drive were pulled out of the motor, first post. Once those were pulled, we have no way of knowing if they were reinstalled in the exact same position when they were reinstalled. Any reference to timing, at that point is a lost cause. It was not checked before it was pulled apart. If the motor now runs, the timing chain and gears are in the proper place. With a timing chain that has slipped one tooth, the motor will barely run. If it has slipped 2 teeth, it won't start at all. That said, the chain could be stretched, and the gears may be worn, do to the miles on the motor (40,000 mile on a Mopar motor is not a lot of miles, but the amount of abuse the motor has seen does take its tole). That is/was not the cause of your problem. If there were high quality parts used in your motor when it was rebuilt, I would be surprised if the chain or gears are worn very much at all in 40,000 miles. A worn chain/timing gears can cause the ignition timing to retard and could cost you ultimate performance, which would get progressively worse until it jumped a tooth. You can detect a worn timing chain & gears with a timing light watching the timing marks when the motor is idling. The timing mark will move around a few degrees without you doing anything. The tick when the timing was dialed in does give me some concern, given the compression test numbers. Mopar allowed a 20% difference in compression between the highest cylinder and the lowest cylinder before recommending a rebuild. You are right at that cut. Now that you got the motor running again, I think I would recheck the cylinder compression test and see how closely it matches the first compression test. You might have better numbers now. The tick could be an exhaust leak, a bad ignition wire, a burnt valve, a cracked piston, a broken crank, a chunk of carbon, a bad lifter, a bad cam lobe, a bent push rod, a damaged rocker, or a few other things. You still don't know what caused your inimical problem. It was not the timing chain or timing gears, and it was not the oil pump. Back the rev limiter down to about 6200 and stay off the rev limiter! Shift sooner! It will make the motor a lot happier, it will live longer. It will not hurt your performance much, might even be faster! Gene
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Re: 440 stopped running, why??
[Re: GTXMEX]
#1976013
12/25/15 03:50 AM
12/25/15 03:50 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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135 on the big crank bolt (clean/dry threads). couldn't find a spec for the cam gear bolt but you cant go wrong with Googling it, need (A) the grade, 3 lines is grade 5 and 6 lines is grade 8 (B) the dia (C) fine or coarse threads & likely someone will chime in before you have to go that far
live every 24 hour block of time like it's your last day on earth
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Re: 440 stopped running, why??
[Re: GTXMEX]
#1976352
12/25/15 09:46 PM
12/25/15 09:46 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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tranny in dr for that. you'll hit 35 before it turns in neutral. I'd brush some permatex #3 aviation gasket cement on a tailor made gasket or spray the same gasket with permatex 99MA "high tack" the thin red spray stuff in the purple can.
live every 24 hour block of time like it's your last day on earth
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