Decking the engine
Le Mans Master
Joined: Mar 2009
Posts: 7,987
Likes: 3,962
From: Cold Harbor, VA
Google knows
From Yahoo Answers:
What does "decking my engine block" mean ?
Best Answer - Chosen by 100% of Voters-
"Decking" is machining to square the block [surface where the heads attach] perpendicular to the cylinders.
jeff-
you're more thorough answer cost you a nanosecond. I won that Jeopardy round!
What does "decking my engine block" mean ?
Best Answer - Chosen by 100% of Voters-
"Decking" is machining to square the block [surface where the heads attach] perpendicular to the cylinders.
jeff-
you're more thorough answer cost you a nanosecond. I won that Jeopardy round!
Last edited by 65hihp; May 12, 2012 at 12:38 PM.
Tech Contributor
Joined: May 2005
Posts: 15,576
Likes: 118
From: Conroe Texas
Shaving the surface of the block where the head gaskets go, to result in a "true", flatter surface.
Because stamped factory markings (assembly codes, VIN data) are stamped into this surface just forward of the leading edge of the passenger head, decking the block often results in the loss of the factory markings, making it nearly impossible to prove an engine is the original "numbers matching" block for a car.
Because stamped factory markings (assembly codes, VIN data) are stamped into this surface just forward of the leading edge of the passenger head, decking the block often results in the loss of the factory markings, making it nearly impossible to prove an engine is the original "numbers matching" block for a car.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,925
From: Washington Michigan
Here's a typical decking setup with the block registered on the main bearing saddles so the deck surface is machined parallel to the crankshaft centerline; the rotary cutter is shown above the block. 
