Listing is for the Block, Crankcase Cover and Piston Assembly pictured in the first (3) photo. All additional tooling and accessories are shown for informational purposes and are NOT included.


• Block and Crankcase Cover | Align-Bored to 2.688 (+.010) | Finished honed and supplied with piston, wrist pin and clips only (no rings are included).
• Blocks are setup and machine individually to ensure the tightest of tolerance and to obtain the maximum performance.
• Our align-bored blocks provide more consistent final results by eliminating the crankshaft alignment issue found with independent machining operations associated mass production blocks and crankcase covers.

A Couple Thoughts to Consider: The hidden engine performance or lack of, comes from the drag (friction) that occurs due to crankshaft alignment. The more pronounced the drag the great the loss of power. This is a good explanation why (2) engines built exactly the same do not performed the same. Another example of how this drag effects the engine performance, consider the difference between building an engine with full tension rings verses a lower tension.

• Engine Block Specs:
  
  Block:
  
  Align Bored to .010 oversize - Final bore diameter 2.688".
  Piston to cylinder clearance .0025
  Sunnen honed and Flex-Hone plateau finished. Bore is ready to assemble.
  
  Engine blocks, boring and machining have been our specialty since 1986. The E-Z Bore system is the only boring machine patented and developed exclusively for performance kart racing engines.
  
  

SPECIAL NOTES:

• Block must be completely cleaned before assembling. Final honing operation WILL leave honing abrasive residue that MUST be cleaned before assembly.
• Please ask question before purchasing, we will provide as much information about the parts and machine work in this listing as possible. If you need additional information about how to build a race motor we offer to purchase an excellent book entitled " "The Master Engine Builders Guide to the GX200 Clone" written by Garry Fisher.