View Single Post
Old 03-01-2023, 11:24 AM   #12 (permalink)
Isaac Zachary
High Altitude Hybrid
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 1,650

Avalon - '13 Toyota Avalon HV
90 day: 40.45 mpg (US)

Prius - '06 Toyota Prius
Thanks: 892
Thanked 456 Times in 358 Posts
Originally Posted by Solarpowered View Post
As for the cylinder head thing, that's something I haven't really been able to work out well. You can port and polish, but where is the stopping point? There must be a sweet spot somewhere, and if you go over that, now you have to spray more fuel.

But there comes a point where you increased power by doing that, and thus you might have increased efficiency somewhat.
Intakes are more about keeping the fuel atomized. Rough can be better because of that.

Usually your best bet is getting OEM stock heads and getting the valve seats cut right. The company that build the original engine probably did more testing and research than any aftermarket company. If you want great atomization you need to do a lot of work. Wetflow is a lot of trial and error, something probably not worth the extra 5mpg.

  Reply With Quote