Quote:
Originally Posted by 1slow370
Are you asking about the 10:1 pistons? It increases the the low boost performance by raising pressures to spool the turbos faster and provide more torque, of course anyone going over 15psi would be better off with the current 9:1 offerings as eventually with more boost the higher ratio is going to raise pressures too high. but for the guys in the 550-700 range it will be a more efficient built motor.
At high power levels the 9:1 motor will see less stress than the 10:1 motor, but the 10:1 more will make more power for the amount of charge it gets.
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Hi ...
Following this build out of necessity... :-(
Just want to clarify things in my mind ...
I need to rebuild my motor.
I have stock block with an upgraded Stillen SC'r making 11.9 lbs boost along with 1000 lph injectors and other supporting goodies.
It dyno'd at 483whp and 378 tq.
First time down the track it cracked a piston or ??? Nothing came thru the side of the block.
Would like to keep as much of the mods already done but keep or up the power to the 550-600 range while keeping the reliability of the motor.
Definitely a Long Block (can send my motor) - but need advice / recommendation for the Compression Ratio ~ Pistons and Rods
9.0:1 or 10.0:1 ??? for the
Supercharged motor.
All help greatly appreciated !
Many Thanks,