SR5 - 4A-C engine

[Mux213]

NoHachi,

Hehe putting carbs on a 4AG would be very interesting aswell indeed. Simplyfies the swap a whole lot.

Alimonos, its what NoHachi (or Ivan taking over his PC, dunne know) is saying, carberator tuning is a lost art. Also I wonder if a 16v head with cams designed with an EFI in mind is the best combo. The thing is, an EFI can control different fuel/air ratios depending on RPM and other engine vitals. Combine this with how 16v improves airflow over the RPM range you have an engine with much more power over a larger range while still being fuel efficient.

A carb has a fixed setup and really is targetted at a certain RPM at which the mixture is optimal and power is greatest but at other RPMs you are dumping way to much fuel into the system. Or if you want fuel economy you simply can't reach that max potential of the engine (which is why I think a 4AC has more potential then you might think). Well atleast thats how I understand it, I am far from an expert on this subject, more or less repeating what I've learned from websites and people

The thing with carbs is though that once you know how, they are alot easier to tune, no complex electronics to worry about, just a few screws that you can turn to adjust the mixture and away you go

My dad used to tinker with old Fiats when he was in his late teens, early twenties and got some very nice results putting hi performance carberators on these engines and playing with the settings But in the end there is a reason why all cars use EFI these days