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Old 04-13-2022, 07:58 PM   #61 (permalink)
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Originally Posted by me and my metro View Post
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 O sensor was the way to go.

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Old 05-13-2022, 10:09 PM   #62 (permalink)
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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!
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Old 05-14-2022, 05:09 AM   #63 (permalink)
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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

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