Quote:
Originally Posted by 1project2many
That's an interesting sound. Does it do it as soon as the engine is started? Is it louder toward the front or rear of the engine? Can you hear it during cranking if the coil is disabled? Is cranking speed normal?
It sounds like a bearing and it could be on the crank. If a rod bearing has spun slightly and is wedged against the crank the oil hole from crank to bearing can become restricted which keeps the oil pressure from dropping.
It's also possible a timing cover is touching the balancer or that there's something wedged against the oil pump drive but those sounds are usually different. The balancer noise is a bit tinnier and the oil pump drive isn't as loud. But the problem with a video is it's hard to get relative sound levels.
But I have heard a strange squealing before that can sound very bad but is actually easy to cure. If the PCV valve is doing its job and drawing air out of the crankcase but there is no way for air to enter the crankcase, air will begin to flow past the main seals. It is very loud. This happened in one case because a set of cheap chrome valve covers came with grommets that weren't actually opened so the breather could not pass air into the engine. In another case an individual installed a PCV vavle in each valve cover not knowing one needed to be vented. In both cases the noise started several seconds after engine start. If you suspect this may be a problem, the easiest check is to ensure the crankcase is vented, possibly by pulling the PCV valve while the engine is running.
Also, mild cam plus 3000 stall converter??? That may not give you the performance you want. But it may not be an issue...
|
-Yes it does it as soon as the engine is started.
-its hard to tell if its louder towards the front or rear of the engine but i would suspect the rear of the engine as in the video.
-engine cranking appears to be normal.
- I pulled the pcv valve on the drivers side and the vent on the passenger side to open things up just in case there was a venting issue. Same results.
-ill investigate the spun rod bearing and see if i can figure out what is happening. i hope to god its not a spun rod bearing. There doesn't appear to be any banging/tapping during idle just the squealing heard in the videos.
Thank you for your input.