3A-LU Mk1 Engine OST-066: I get all wavy [Archive] - Toyota MR2 Message Board

3A-LU Mk1 Engine, port, guide, attempt, pocket, smooth, flow, designed, conjunction, intake, reminds, silly, vane, work, swirl, short, round, wavy, transform, radius, high, guides, ost-066, vanes

http://ost.ebeans.ch/albums/userpics/10005/OST-066.jpg note the edge of the head is wavy, this is the last iteration of the 4AC head in the USA. Its difference is MORE substantial, then a Blacktop head is different from a Silvertop head http://www.mr2.com/forums/images/smilies/wtf.gif http://ost.ebeans.ch/albums/userpics/10005/fully_disassembled.jpg So why build a 4AC head??? Partially because I haven