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hello
my colt evo 4g63 engine is doing 9.1 in 1/4 mile @264km @ 3 bar of boost turbo is pt6870 BB , RPM 9500 , COMPRESSION RATIO 11.5 , PURE ETHANOL . 870WHP MAINLINE DYNO
PLANE IS TO GO 8.5 SEC 1/4 MILE SO IM THINKING FOR A NEW BUILD WITH 12.5 COMPRESSION AND A PT7685 TURBO SO YOU THINK THIS NEW BUILD CAN DO IT , SAME BOOST 3 BAR .
AND ANY RECOMMENDATION FOR CLEARANCES FOR SUCH A BUILD
ANY ADVICE IS HIGHLY APPROPRIATED
THANK YOU
hello
any help :)
The more boost you want to apply the lower CR should be. I would not recommend to raise CR any higher than 11.5.
What kind of clearance are you talking about?
hello
main bearing clearances for such a drag race car ( 4g63 ) 3.5 bar of boost . turbo pt7685
thank you
hello
what turbo size do you recommend for this 4g63 11.5 compression 292 hks cams rpm 9600 for a drag race car . now its doing 9.1 1/4 mile on pt6870 3.2 bar of boost . pure ethanol
thank you
0.06 mm should be fine.
