Engine News/Holidays 7 months ago Happy Holidays from Engine Builder Magazine Share Tweet Print Email Engine Builder,AuthorView bio Bio Recent Posts Popular Posts Race Winning Brands Adds Ross Berlanga as Director of AdvertisingMSHFA Announces Seven Inductees for 2019Proform Ford Performance Slant-Edge Breather CapsKatech Xtreme-DI Fuel System Total Seal AP Ring Sets for GM 5.3L LS/LT Engines VP Racing Fuels Named Title Sponsor of Race Engine ChallengePiston Ring SelectionBorgWarner Opens New 100,000-Square-Foot Technical CenterProform Harmonic Balancer Installation ToolsTotal Seal Gas-Ported Rings Thanks to all of you who have read and contributed to the magazine this year. Have a safe and happy holiday! Comments (1) Larry Carley Dec 22, 2017 at 12:10 pm They have been developing the plastic Polymotor for over 20 years, but have they actually built any production engine for racing or other applications? It’s a good weight-saving concept but requires metal cylinder liners. You can accomplish the same weight savings with a two-piece magnesium/aluminum block (BMW). Comments are closed.