Crankshaft won’t move?
I’m rebuilding an engine on a 2006 Scion tC. Last night I had t all put back together and was going to do the timing. The crank was moving just fine then. I decided to put it off until today. Now I can’t turn the crank by hand. So I took the bottom end off again and it will turn once I loosen the rod cap bolts. But as soon as I torque them up again the crank won’t move. Any advice?
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Sounds like you need to remove the spark plugs and eliminate the compression if you want to turn it by hand!
are the rod caps on backwards?
I am not REMOTELY qualified to rebuild an engine. Your question indicates you are slightly LESS qualified than I am.
You are suppose to "plastigauge the motor first". In other words PAY FOR SOMEONE ELSE TO REBUILD IT FOR YOU BECAUSE YOU "don't know what you are doing so you already flucked it up." S A D
You are not using enough Lubriplate grease...and so rotating a dry crank. There is a few thousand miles taken off of the life of the dry bearings.
Consider this whole engine building experience an education.and throw it away. Now go buy a low mileage used engines and put it in.
If you install the engine you put together it won't last a week even if you manage to get the crankshaft turning.
First, are you going by Toyota specs for that model & motor? Second, a rebuild usually requires a little looseness. You can talk to Scion & see what they recommend..
Buy a used motor.
Rods too tight it seems. There is a product called plastigage; it's how you would confirm correct bearing clearance during assembly. Currently you have already figured out the clearance is wrong. Now you need to measure the crank and figure out what the correct size bearing is for your crank. Cranks are original standard size or they have been machined and require an oversized bearing matching the machine work.
I am just answering this question to get points.