Quote:
Originally Posted by tadd
Henry,
Is there going to be some sort of knock sensing? Given that the heads are a new-ish design, and 11:1 is getting up there is there a plan if premium pump gas isn't enough?
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The hemi chamber design of the early Porsche 911 is one of the reasons the 911 has detonation issues.
This new chamber and relativity flat top piston should minimize the propensity to detonate.
As for fuel: whatever it needs.
The hemi chamber design of the early Porsche 911 is one of the reasons the 911 has detonation issues.
This new chamber and relativity flat top piston should minimize the propensity to detonate.
As for fuel: whatever it needs.
Add on: Back in the IMSA days, rules limited 962 engines to run only one spark plug.
They also had fuel regulations. Porsche chose to redesign the chamber to accommodate the regulations. The head below was the result of their efforts. The heads in this little 2.5 take the concept one or two steps further.
