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Align Honing of Main Journals

3:28
47:01
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At 3:28 in

BluePrint Engines Factory Full Tour & Behind The Scenes: How Does a Crate Engine Get Made?

What happens here

The main journals are finished using an align hone machine, specifically designed and manufactured by the Blueprint Engineering department. This machine utilizes special honing stones and coolant to dial in the main journal dimensions to extremely tight tolerances, ensuring optimal fit for the crankshaft. A safety light curtain mechanism is incorporated, which immediately shuts down the machine if any object breaks the beam, preventing injuries. This step ensures the final critical dimensions for the crankshaft bearings are met.

Goal: Achieve final precise dimensions for crankshaft main journals.

Tools and materials

  • Coolant — Lubrication and cooling during honing
  • Engine Blocks — The engine blocks undergoing final main journal honing
  • Honing Stones — Abrasive material used for honing
  • Safety Light Curtain — Ensuring operator safety during machine operation

What they say

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the same concept [Music] all those sprayers in there are perfectly pointed that's so cool will this just run through here once or do you make multiple passes wow one pass those are very specific stones that were designed for this application once it goes through and does that pass it's sized and ready to go um that won't get touched again until we start installing bearings and it'll go through a wash tank but that micro sizer takes it to the point where it's ready for the the main journal bearings to be installed that's crazy so it goes from the raw bumped out like unfinished state to ready to rock in one pass just like that and this is a pretty cool shot when you look at the number of blocks each one of these different colored sheets of paper is sticking out of it tells us it's for a different engine application so you think about the block itself there will be provisions for fuel pumps yeah where you can see it's got the fuel pump and mechanical fuel pump holes machined in it there will be other ones over here you can see that it's not machined in there and then we have a block where we've got a piston oiler in it and so those those other ones over there there's an actual hole where you can put a manifold in there and put oil on the pistons and turbo applications now if you feel you remember that step you felt on the other side yeah that steps completely gone yeah that's like done done you can't feel it at all

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