Engine build for MPG

[oil pan 4]

File fit oil rings, with a real narrow gap. 14 to 18 thousands top and a little wider 2nd gap.
Raise the compression ratio.
Put a block heater on the engine.
Reduced oil ring tension.
http://ecomodder.com/forum/showthrea...ger-29085.html

[ChillyBear]

Originally Posted by freebeard

I think you question deserves an answer:

• Blueprinted for clearances and balance.
• Wear surfaces cryogenically tempered prior to machining.
• Exterior surface with heat-rejecting aerospace coatings.
• Combustion chamber surfaces (head, cylinder valve heads.) coated with ceramic heat-proof coatings.
• Piston skirts, rings and bearings with low-friction aerospace coatings.
• Anti-reversionary headers and everything everyone else has suggested.

You can price that all out, calculate the ROI and have a sad.

ROI=sad.