19bonestock88’s first generation L61 build thread

[cRiPpLe_rOoStEr]

Originally Posted by me and my metro

Flex fuel Ford Taurus has an ethanol content sensor so the car can adjust the ecm mapping. The car I saw it on was a 2006-2010.

Even though the Taurus had been a captive import in Brazil for a while, there was never a flexfuel one officially available here. But anyway, due to budget, as flexfuel tech was implemented here on smaller econoboxes, relying on the O² sensor was the way to go.

[mpgmike]

Hopefully I caught you before you bolted the head on. A trick I learned about, then took to extremes, is to roughen the intake ports. I did Powre Lynz, shared my Head Porting Book with David Vizard, and he took the idea and made it his own. I saw a close approximation of my design on a David Vizard head in Popular Hot Rodding about a year later.

My version puts what look like screw threads in the intake ports. Vizard used a small ball carbide bit on the CNC mill and ran a very coarse path, leaving "ocean waves" in the ports. Another person I exchanged ideas with used a large carbide bit on slow speed to get chatter. This made splays in the surface. It works magic!

[19bonestock88]

Yeah you’ve missed that opportunity lol, the engine is assembled and in the car. I didn’t do much to the ports other than smooth out some casting imperfections