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post #1 of 5 Old 02-20-2007, 02:21 PM Thread Starter
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spun bearing

well im not the best mec around just rebuilt a 304 ran it for about 50 miles and now when i parked it i noticed a ticking sound coming from #1 cylinder drained oil yes there was metal in the oil so i pretty sure i spun a bearing anyway was wondering if i pull the motor can i just flip motor over and replace crank and bearings without removing heads piston and everthing else?

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post #2 of 5 Old 02-20-2007, 04:38 PM
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50 miles on a fresh engine yes you'll have metal in it. Before you go thru all that work pulling the engine. Drop the pan and just the 1 main cap and check. But you said a ticking noise. lifter/cam?? You might have rounded your cam. How did you break the engine in?
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post #3 of 5 Old 02-21-2007, 12:40 AM
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ya like tscuda said metal will be in the fresh engine, everything in the engine needs to get use to each other

did you measure your bearing/crank clearance when rebuilding?

sounds like a lifter sticking, add some lucas oil additive

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post #4 of 5 Old 02-21-2007, 06:18 AM
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X2 on the stuck lifter. I am guessing that they are hydraulic and you either have a bad one or may not have pumped them up before installation.

To answer your other question on what can be done when pulling the motor:

You can pull the engine, drain it well, flip it and pull the pan. You most likely will not be able to pull the crank with the pistons still in the engine as the rods will fight you.

I, however, have seen people loosen everything up on the bottom end and were able to slide new bearings in and remove the old ones.

To locate the source of your tick, you should take a long screwdriver and touch it in different areas on the motor while it is running and press the handle up to your ear.
You'll find the noise quickly.
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post #5 of 5 Old 02-21-2007, 12:29 PM Thread Starter
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thanks for the help pulled motor last night.today toook oil pan and took off #1 piston pulled bearing and it was copper with a few groves in it.so i think that was the prob.yes after looking it might be alot easier to just pull the heads off.man i hate doing stuff twice.
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