um thats a high comp ratio for a turbo
also, it doesnt say what block it is.
Stock block Hell no
Aftermarket (dart, world, boss) HELL YES
9.7:1 is NOT a high comp ratio for boost. The Evo has that iirc, and I believe my 2g is 9.5:1 for example.
11.2:1 is high, thats the Coyote 5.0's.
Even then, a lot of guys are running higher comp builds, especially with e85. You dont have to run as much boost to get power, and you get great throttle response and low-mid torque.
If the motor is built with the correct parts and manufacturer for that comp ratio and boost level, and its tuned properly its great to have a higher comp ratio than the older adage of lower comp due to lack of tuning options, aftermarket knowledge and fuel availability. Its amazing what weve learned in just a decade in terms of car setups.
um thats a high comp ratio for a turbo
also, it doesnt say what block it is.
Stock block Hell no
Aftermarket (dart, world, boss) HELL YES
are you seriously comparing a pushrod motor from the 1960's to a motor made in 2011?
the DOHC and the OHV respond differently to boost not to mention the VVT
How does the cam orientation change how the engine will respond to a higher CR? :shrug: Most newer builds meant for boost are running higher CR for the exact reasons Thomas stated. Look at the 13 GT500 they changed it from 8.4 to 9 to 1.are you seriously comparing a pushrod motor from the 1960's to a motor made in 2011?
the DOHC and the OHV respond differently to boost not to mention the VVT
9.7:1 is NOT a high comp ratio for boost. The Evo has that iirc, and I believe my 2g is 9.5:1 for example.
11.2:1 is high, thats the Coyote 5.0's.
Even then, a lot of guys are running higher comp builds, especially with e85. You dont have to run as much boost to get power, and you get great throttle response and low-mid torque.
If the motor is built with the correct parts and manufacturer for that comp ratio and boost level, and its tuned properly its great to have a higher comp ratio than the older adage of lower comp due to lack of tuning options, aftermarket knowledge and fuel availability. Its amazing what weve learned in just a decade in terms of car setups.