Crankshaft TDC

2001 LEXUS GS 300
175,333 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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FLORES LES
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I have the car listed above 2jz-ge with vvdi. the water pump was replaced recently. somehow the crankshaft was rotated and now can't get it back to TDC when I hand crank it. it seems to only go 180 degrees. help is appreciated, thank you.
May 3, 2020 at 12:59 AM
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ASEMASTER6371
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Good morning,

Did you rotate the engine and it stopped turning?

Did you crank the engine at any time? I am worried that the timing being out, you may have damaged the valves and you have a valve hitting a piston.

https://www.2carpros.com/articles/how-a-timing-belt-works

I attached the diagram of the marks and how they should be set.

See if that is where the timing line up.

Roy

May 3, 2020 at 4:24 AM
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FLORES LES
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it was cranked, and I also came to the conclusion that valve is bent. I just wanted to run it by an expert. In your opinion, would you replace the cylinder block or try to fix the valves?
May 3, 2020 at 5:31 AM
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ASEMASTER6371
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The heads would have to be removed and inspected. At the same time, they need to look for piston damage. If there is, then you are talking a total overhaul.

My suggestion is to replace the engine with a good used motor. That would save you money fro both ends.

You can go to a site www.car-part.com and enter your information and there will be dozens listed from yards in your area.

I attached one page for you but I found over 400 available for you to view.


Roy
May 3, 2020 at 5:57 AM
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FLORES LES
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thank you for your time and opinion.
May 3, 2020 at 6:04 AM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
May 3, 2020 at 6:07 AM
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FLORES LES
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Excuse me sir, is it possible for you to provide my the "how to" remove cylinder block and engine?
May 3, 2020 at 3:04 PM
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ASEMASTER6371
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This is a huge project to take on. You need a lift, engine crane and a lot of different tools.

To be honest, I would go to alldatadiy.com and you can get a 1 year subscription for your car. Then you can go to the procedure and print out all the steps and pictures for the procedure.

https://www.alldatadiy.com/buy/index.html

It is a very long list of steps for this procedure.

You can also go to www.car-part.com to find a good used engine in your zip code.

Roy

May 3, 2020 at 3:33 PM
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ASEMASTER6371
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Did you respond? I see an email but nothing came through.

Roy
May 3, 2020 at 3:39 PM
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FLORES LES
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yes.
May 3, 2020 at 3:44 PM
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FLORES LES
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I was wondering if its possible to attach a link on how to remove cylinder block and engine?
May 3, 2020 at 3:45 PM
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FLORES LES
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oh never mind. I seen your newest response.
May 3, 2020 at 3:47 PM
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ASEMASTER6371
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It is okay.

Let me know if you have any other questions.

Roy
May 3, 2020 at 3:51 PM