Im doin some work to my b18b currently, Im putting in 62404 crower cams and looking to get some pistons to bump compression to 12.0 ... my question is the valves. I dont know too much about them but maby you guys can help.

in upgrading the valves, I am looking to get these:

INTAKE

PART # F1491P
HEAD DIAMETER: 32mm
STEM DIAMETER: 6.57mm
OVERALL DIAMETER: 105.5mm
TIP LENGHT: 4.1mm
DESCRIPTION: 20° Super Flo Dish Head 1mm Oversize

EXHAUST

PART # F1489P
HEAD DIAMETER: 29mm
STEM DIAMETER: 6.54mm
OVERALL DIAMETER: 106.02mm
TIP LENGHT: 4.1mm
DESCRIPTION: 30° Flo Dish Head 1mm Oversize Super Alloy

Are they alright for an all motor setup, also what pistons can i run with these valves (or will any pistons work, I dont know much bout pistons either.)

Also what pistons would fit in the b18b I know theres different sizes of pistons but what needs to be done to run them, im guessin the larger the size the greater the torque, but will I need con rods to run them with this set up or will the stock rods work....

(i know this next question is a dumb one but just makin sure) to run the larger pistons do I just need to bore out the motor to fit them or anything else?

please do help me out...give me some advice

 

anyone.. please?

 

Iwould get the 28mm exhaust valve, you do not need any more ex. flow, the 32mm In. valve is good. Vtec and PR-8 heads are 33mm IN and 28mm Ex.