Please! The formula for engine displacement limits in FIA used in Le Mans is based on Volumetric Efficiency formulas that allow 5, 6, 7 liter pushrod engines to compete against the 3 liter quad cammed engines. Two-valve pushrod engines have a lower Volumetric Efficiency than OHC 4-valve engines. OHC engines rev higher, have higher VE's which allow for pushrod engines to compete at increased displacement, lower RPM's. Your statement that Ford can and will produce an engine less complicated, more efficient and more powerful than the Z06 engine is laughable. Are they going to call that the Mustang/Cobra engine as well? How are those Eco-Boost engines doing? Don't they sound wonderful? lol What a joke. And please don't tell us about how the Ford GT's dominated Le Mans last time. They deliberately brought the cars in late to be inspected by the FIA. The BoP the FIA factors in by the organization could not be determined. Ferrari, Porsche and Chevrolet Racing Teams raised a stink for the favoritism granted to Ford.
No that is all done in the dealer.
If things are that messed up they generally just replace the engine. They do not send cars back to the factory.
What they do with those engines are to send them back to Detroit to inspect and fix issues.
My intake tube blew out on my LNF turbo. It popped the map out. I ended up contacting GM and the engineer in charge of their program on questions about the Tune I added.
He returned my E Mail with a call 5 min later. He sent be some diagrams and when I spoke of the intake tube he asked me some questions and told me he had the tube.
They found the tube was a early production part the vendor did not get the plastic weld right on. It worked at 16 psi boost but not at 23 psi boost.
It was cool how the worked with me and also another friend on our cars and to know they followed up as they did.
Most people at automakers are very caring and responsible people.
But every company has sins in their closets too.
No! In todays engines between knock sensors, oil cooling broom below and direct injection the combustion chamber is low enough in temperature to permit high compression.
Note higher compression burns cleaner and a side effect is making more power.
My LNF Turbo ran 11 to one compression and 23 pounds of boost for 300 hp from 2.0 liters. These same technologies permitted that all on pump gas.
Actually the torque comes in hard around 2900 rpm and holds to 8900 rpm. This is a very flat torque curve and the car is geared to take advantage of it.
Here are some factual numbers.
304 FT LBS at 1500 RPM
402 FT LBS at 2900 RPM
459 FT LBS at 6300 RPM
402 FT LBS at 8600 RPM