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Main Bearing Cap Grinding

2:16
50:14
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At 2:16 in

Late Model Engines Shop Full Tour & Assembly Process! BIG POWER Chevy LSX/LT Specialists! (LME)

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What happens here

For used engine blocks, the main bearing caps are removed and machined on a cap grinder. This process shaves a small amount of material from the cap surface, making the main bearing housing bore slightly smaller. When the caps are re-installed and torqued, this creates a tighter, more precise fit for the main bearings, improving overall engine durability and performance.

Goal: Reduce main bearing housing bore size for precise fit

Tools and materials

  • Cap Grinder — Machining the surface of main bearing caps
  • CBN Grinding Wheel — High-hardness abrasive for precise grinding

What they say

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so a brand new block um we will cut the caps as well as a used block so i talked to you about earlier in the other video uh cutting the caps this is here your cap grinder so the the main cap will go into this into this grinder it'll clamp down and we'll able to actually grind the surface of the cap to make the housing bore smaller um that's cool i've never seen one of these before that's some that's stuff like

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