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Marks on lower engine

Discussion in '5th Gen 4Runners (2010-2024)' started by H1M72, Jun 26, 2024.

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Jun 26, 2024 at 7:11 PM

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H1M72 [OP] New Member

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Nick

West Columbia, SC

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2024 TRD PRO

I popped the hood tonight and noticed the marks on the lower part of my engine. I dont think they should be there. I have 6k on my 24 Pro. Any insight would be great.

H1M72, Jun 26, 2024

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Jun 26, 2024 at 7:14 PM

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2Toys Imperial Star Cruiser

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Gordon

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Those are normal, everybody has them on their engine. It is casting marks from manufacture.

2Toys, Jun 26, 2024

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Jun 26, 2024 at 7:15 PM

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5thToy New Member

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Those are from little surface cracks in the mold used to cast your engine block.

Normal.

Notice the lines are raised, not cracks. Motlen aluminum settled in to the cracks in the mold and are left on top of the smooth surface of your block.

5thToy, Jun 26, 2024

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Jun 26, 2024 at 7:15 PM

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H1M72 [OP] New Member

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Nick

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2024 TRD PRO

Thanks guys!

H1M72, Jun 26, 2024

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5thToy and 2Toys like this.

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