Re: engine siezed, any thoughts on why
[Re: justinp61]
#2163741
09/28/16 04:22 PM
09/28/16 04:22 PM
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Joined: Jan 2003
Posts: 20,541 Eagle, Idaho
Neil
The Doctor is in.
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The Doctor is in.
Joined: Jan 2003
Posts: 20,541
Eagle, Idaho
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Incorrect ring gaps? KB Hypereutectic pistons, for example, require larger clearances than cast or forged, IIRC.
I have heard of a 383 sb chevy engine running for miles with a spun main bearing. Noisy, but still started and ran.
Spun, or misaligned, cam bearing will break the camshaft in half at that journal (brittle material). That happened to my dad's old 400M Ford.
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Re: engine siezed, any thoughts on why
[Re: Neil]
#2163775
09/28/16 05:37 PM
09/28/16 05:37 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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he said he thought he gapped the rings a bit too large & they are forged pistons. I wont be involved in the teardown (I barely know the guy) but I am gonna call him soon & see what he has to say & I will find out if early Nov is still the plan to get something done on it
live every 24 hour block of time like it's your last day on earth
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Re: engine siezed, any thoughts on why
[Re: killermopar]
#2163903
09/28/16 09:19 PM
09/28/16 09:19 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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master
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Canton, Ohio
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Its a spun Main, and nothing else. A seized piston, crank can still move abit, clearances n bearings. A siezed cam bearing, crank can still move with chain slop. A vert bolt stuck to block, crank should still be able to move backwards, at least with a breaker bar. Besides the described sounds weren't right. A bad vert, no way. You would still be able to get some kind of crank movement. A spun rod bearing, crank can still move there too, clearances. A spun Main,Yep, Locked up Tight. So , there is my Out on the limb, Big Fat limb opinion. Good news though, is there wont be a lot of carnage.
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Re: engine siezed, any thoughts on why
[Re: Sport440]
#2163930
09/28/16 09:53 PM
09/28/16 09:53 PM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
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Its a spun Main, and nothing else. A seized piston, crank can still move abit, clearances n bearings. A siezed cam bearing, crank can still move with chain slop. A vert bolt stuck to block, crank should still be able to move backwards, at least with a breaker bar. Besides the described sounds weren't right. A bad vert, no way. You would still be able to get some kind of crank movement. A spun rod bearing, crank can still move there too, clearances. A spun Main,Yep, Locked up Tight. So , there is my Out on the limb, Big Fat limb opinion. Good news though, is there wont be a lot of carnage. he drained the oil & said it looked OK, he cut open the filter & said there was some "fine" metallic particles, nothing disturbing. Could be bearings but I would expect more shrapnel in the filter. I have seen a front pump seized up solid. Thought it was the crank until they tried to separate the engine from the trans. Took a 6 foot bar to get it apart. If the trans is good my bet is still pistons. Kevin
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Re: engine siezed, any thoughts on why
[Re: poorboy]
#2164054
09/28/16 11:51 PM
09/28/16 11:51 PM
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Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
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master
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Canton, Ohio
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A guy I knew locked up a freshly rebuilt 383 one time.
(He said) it ran about 30 seconds, and just quit running. pulled the heads, and all 8 pistons were locked in the cylinders. T The crank had absolutely no movement.
My guess is its piston related. Gene IMO, That's a He said guy I knew, Story. IMO, No way, are All 8 pistons going to seize up at the same time. Less then a minute to boot too , come on.
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Re: engine siezed, any thoughts on why
[Re: Sport440]
#2164079
09/29/16 12:32 AM
09/29/16 12:32 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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I just got off the phone with him, he pulled the rockers & no change, still locked solid. He's gonna pull the heads & I suggested when he pulls the pan to undo the rods that are angled right & with a wooden dowel see if the pistons can be driven up. he may have a little time here and there before his Nov vacation week rolls around and I will update with any tidbit that he uncovers. thanks all, the extensive and I do mean extensive interest has made my day!
live every 24 hour block of time like it's your last day on earth
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Re: engine siezed, any thoughts on why
[Re: justinp61]
#2164135
09/29/16 03:02 AM
09/29/16 03:02 AM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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I edited my first post later to say you may need to remove the tranny if it won't spin over backwards or forwards with a breaker bar on the crank bolt
Last edited by Cab_Burge; 09/29/16 12:48 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: engine siezed, any thoughts on why
[Re: Sxrxrnr]
#2164366
09/29/16 01:53 PM
09/29/16 01:53 PM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
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Likely a coincidence of all coincidences to have converter/transmission cause seize up if neither had been modified simultaneous with engine build,,,unless some quirk occurred at installation of engine time. Like we forgot to fill the trans up or the trans had an issue. My ex had a new 82 Camaro with a 2.8 that had a noise in it that the dealer was ignoring. I forget what the noise was but I figured about 20 miles in second gear at 5 grand would sort it out. 10 miles out and 5 miles back it did. It labored for about 5 seconds and seized solid with a bang. Had it towed to the dealer and they assumed as did I that the engine was pooched. Big surprise when they couldn't get the engine and converter to separate. Front pump was what the problem was. Kevin
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Re: engine siezed, any thoughts on why
[Re: Twostick]
#2164387
09/29/16 02:34 PM
09/29/16 02:34 PM
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Joined: Jan 2005
Posts: 3,699 Newport, Mi
Evil Spirit
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Newport, Mi
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Likely a coincidence of all coincidences to have converter/transmission cause seize up if neither had been modified simultaneous with engine build,,,unless some quirk occurred at installation of engine time. Like we forgot to fill the trans up or the trans had an issue. My ex had a new 82 Camaro with a 2.8 that had a noise in it that the dealer was ignoring. I forget what the noise was but I figured about 20 miles in second gear at 5 grand would sort it out. 10 miles out and 5 miles back it did. It labored for about 5 seconds and seized solid with a bang. Had it towed to the dealer and they assumed as did I that the engine was pooched. Big surprise when they couldn't get the engine and converter to separate. Front pump was what the problem was. Kevin A buddy had a similar engine issue with an 85 IROC - after about 10 miles red-lined in first gear the cat converter over-heated and set the car on fire. It took the dealer and his insurance 4 months to figure out who was liable.
Free advice and worth every penny... Factory trained Slinky rewinder.........
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Re: engine siezed, any thoughts on why
[Re: Sport440]
#2164460
09/29/16 04:11 PM
09/29/16 04:11 PM
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Joined: Jul 2013
Posts: 1,272 Northern Calyfornua
Sxrxrnr
pro stock
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pro stock
Joined: Jul 2013
Posts: 1,272
Northern Calyfornua
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Mains, still still my odds on bet,,,many other good possibilities on deck so would not bet the ranch.
Last edited by Sxrxrnr; 09/29/16 04:16 PM.
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Re: engine siezed, any thoughts on why
[Re: Twostick]
#2164638
09/29/16 08:23 PM
09/29/16 08:23 PM
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Joined: Mar 2006
Posts: 9,835 MI, usa
dvw
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master
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MI, usa
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Its a spun Main, and nothing else. A seized piston, crank can still move abit, clearances n bearings. A siezed cam bearing, crank can still move with chain slop. A vert bolt stuck to block, crank should still be able to move backwards, at least with a breaker bar. Besides the described sounds weren't right. A bad vert, no way. You would still be able to get some kind of crank movement. A spun rod bearing, crank can still move there too, clearances. A spun Main,Yep, Locked up Tight. So , there is my Out on the limb, Big Fat limb opinion. Good news though, is there wont be a lot of carnage. he drained the oil & said it looked OK, he cut open the filter & said there was some "fine" metallic particles, nothing disturbing. Could be bearings but I would expect more shrapnel in the filter. I have seen a front pump seized up solid. Thought it was the crank until they tried to separate the engine from the trans. Took a 6 foot bar to get it apart. If the trans is good my bet is still pistons. Kevin When mine jammed the converter bolt, the motor would not budge in either direction with a breaker bar and a pipe. Didn't really hurt anything except the bolt and the threads in that hole in the converter. Still has same flex plate, converter, no block damage,only very slight scratch. Doug
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Re: engine siezed, any thoughts on why
[Re: stat5]
#2164739
09/29/16 10:34 PM
09/29/16 10:34 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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I didn't check the coolant but I know he did & now that you mentioned it the temp did come up fairly fast (was at 160) and that was at the end of the ~4 minutes. I'll probably get back at him in a week or 10 days & if I hear from him first I will for sure post. He knows from my last ph call that I am concerned about it & anxious to help (find the cause & the solution).
live every 24 hour block of time like it's your last day on earth
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Re: engine siezed, any thoughts on why
[Re: RapidRobert]
#2170660
10/08/16 11:46 PM
10/08/16 11:46 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
OP
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I just spoke with him & he reports that it will turn now but very hard. He said the weekend after next he might have it out & possibly opened up. EDIT two converter bolts were clocked to where they could be removed then he turned the crank to get at the other two. He plans to pull the eng from the top. After talking last night I am going to be in on the diagnosis & I will post what develops. I probably should have waited for something more definitive before posting but I am bored & kinda anxious to see some progress
Last edited by RapidRobert; 10/09/16 12:31 PM. Reason: bored
live every 24 hour block of time like it's your last day on earth
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Re: engine siezed, any thoughts on why
[Re: Sport440]
#2171306
10/10/16 02:27 AM
10/10/16 02:27 AM
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Joined: Feb 2003
Posts: 10,205 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,205
Someplace you aren't
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Its a spun Main, and nothing else. A seized piston, crank can still move abit, clearances n bearings. A siezed cam bearing, crank can still move with chain slop. A vert bolt stuck to block, crank should still be able to move backwards, at least with a breaker bar. Besides the described sounds weren't right. A bad vert, no way. You would still be able to get some kind of crank movement. A spun rod bearing, crank can still move there too, clearances. A spun Main,Yep, Locked up Tight. So , there is my Out on the limb, Big Fat limb opinion. Good news though, is there wont be a lot of carnage. I had a rod bearing seize in a 400. Locked the crank tight. Was just thinking how bad that sucked getting out compared to normal. So i know a spun rod will lock one up.
I want my fair share
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