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      04-08-2018, 08:51 AM   #12
ap485
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Drives: 2011 BMW E92 335i
Join Date: Apr 2018
Location: Houston, TX

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Quote:
Originally Posted by NonoxX View Post
Wow, nice project!
But, I don’t get one thing: how did they manage to convert it from open to closed deck?
Thanks!

Here ABR’s explanation.

“The block is set up on a custom built plate to hold it in a 5 axis CNC machine. We Machine the lip into the cylinder walls and block walls to accept our closed deck conversion insert. Warming the block up and freezing the insert, we press it in with about half a thousandths press. It’s permanently installed, and machined flat with the top of the block deck. This significantly strengthens the issue of an open deck block- where the tops of the cylinders will “wobble” or move under heavy load. By doing this, we’ve yet to see the limit of the block (so far).”

Take a look at their website below. They have good information in there.

https://www.abrhouston.com/performance-engines/
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2011 E92 335i | ABR N55 Built Engine | 6HP19 Built Trans | Speedtech Kit BWS369 Turbo | Radium Eng FHST | EOS Manifold + PI | Reflex | E85 | MHD Tune by Wedge
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