i am about to build a b20 vtec. i am choosing between the ITR head and the b16 head. which one will do better? and also, what pistons can i use for the b20 block>? can i use the ITR pistons for lightweight purposes? can i also use the venturi plate by spoon to increase the flow of fuel in the cylinder?

 

Do some more research dude. ITR is a ported B16A head, with better valvetrain components. B20 has a bigger bore(84mm), so you can't use ITR pistons(81mm). You need aftermarket pistons, or cut larger valve reliefs in the stockers to avoid piston to valve contact with a vtec head. Fuel delivery(flow) is controlled by injector size, pressure, pulse width, and duration. Not plates.

 

I would just port out the B16 head it's probably cheaper. Then get an ITR intake manifold. As for pistons i would definately recommend using ENDYN Rollerwaves. Build a setup like HX_guy, his 97 coupe runs high 12's all motor.

 

wht is the set up of HX_guy?

 

Sorry i took so long to get back. I had to find some **** where he posted what he has. He says he's selling his setup because he's gonna get a Acura CL. Oh well here's the ****.

(Im thinking of selling my setup. What would be a fair price to ask.

2000 CRV B20Z2 block
1999 SI B16A2 head

Endyn 84.5mm pistons (11.94:1 CR)
Eagle rods
GSR crank girdle/windage tray/oil pickupoil pan
All new bearings and seals

1997 Spec ITR cams
Portflow retainers
Portflow inner valve springs
ITR outer valve springs

ITR intake manifold
JG 64mm Throttle body
Ported JDM ITR 4-1 header

B&M fuel pressure regulator
Walbro 255 LPH fuel pump
Stock 240cc injectors

Chipped P28 ECU w/Mugen chip
VAFC (tuned for setup)
96-98 OBDII - OBDI ecu harness

GSR transmission
Clutchmasters 7.5 LB flywheel
ACT Street/Strip clutch

Axles and mounts

The engine dyno'd at 208 WHP / 154 TQ and ran 12.91 @ 106.98 MPH on drag radials in a 2450 w/driver Civic.) HX_Guy