Started new engine, got serious problems
Thread Starter
Melting Slicks
Joined: Oct 2000
Posts: 2,019
Likes: 2
From: Na
Re: Started new engine, got serious problems (Nathan Plemons)
Double check all your plug wires? Your rough running could be related to that, although it wouldn't explain the hard starting.
Racer
Joined: Mar 2004
Posts: 311
Likes: 0
From: Oakley Ca
Re: Started new engine, got serious problems (NUckINg FuTS)
Did the flex plate come with the engine? The rpm range you describe is where they shake if badly out of balance. Why did the previous owner get rid of the engine? Not all 383s are externally balanced. Good luck on this one!
Thread Starter
Melting Slicks
Joined: Oct 2000
Posts: 2,019
Likes: 2
From: Na
Re: Started new engine, got serious problems (olman)
Did the flex plate come with the engine? The rpm range you describe is where they shake if badly out of balance. Why did the previous owner get rid of the engine? Not all 383s are externally balanced. Good luck on this one!
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Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Re: Started new engine, got serious problems (NUckINg FuTS)
Machine shop records-or a complete tear down,when an engine is internally balanced-a good machine shop will give you records, at least mine did. Sounds like an ignition problem-or valve train problem :(
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: Started new engine, got serious problems (NUckINg FuTS)
[SNIP]No, the flexplate did not come with the engine. I bought a standard balanced 400 flexplate. How can you tell if an engine is internally balanced???[/SNIP]
One way is to look closely at the flexplate and the harmonic dampner to see if there are extra weights on them. This would normally indicate that the engine is EXTERNALLY balanced. That's ASSUMING that they are the correct parts for the engine to begin with.
Another, more reliable way, is to drop the oil pan and look at the crankshaft. If the engine is INTERNALLY balanced you should see locations where Mallory metal has been added. They will look like round slugs in the butterflies which are slightly larger than the diameter of a quarter.
You can also call the shop that worked on the assembly to see if they have a record of which way it was balanced, if, in fact, it ever was.
Jake
One way is to look closely at the flexplate and the harmonic dampner to see if there are extra weights on them. This would normally indicate that the engine is EXTERNALLY balanced. That's ASSUMING that they are the correct parts for the engine to begin with.
Another, more reliable way, is to drop the oil pan and look at the crankshaft. If the engine is INTERNALLY balanced you should see locations where Mallory metal has been added. They will look like round slugs in the butterflies which are slightly larger than the diameter of a quarter.
You can also call the shop that worked on the assembly to see if they have a record of which way it was balanced, if, in fact, it ever was.
Jake