Hi All. I'm trying to decide if it's worth upgrading the bottom end on my 1.8 ZVH Fiesta. My engine was rolling roaded at 222BHP & 216 lb/ft a couple of years ago but has since had an MSD chip/setup & a bit more boost. Current spec is..

1.8 ZVH
T3 Stg 3 Turbo (peaks at 17psi)
Beige injectors, uprated fuel pump
Stg 3 big valve head (Ian Howell)
CVH34 cam
GRS cooler

I'm trying to convince myself it is worth going for a forged 2.1 bottom end, I'm just concerned that I won't get much more out of it than current spec so hoping for some advice!

I understand I will probably need bigger injectors & possibly even turbo but would be willing to do this if I'm likely to get good gains.

Thanks muchly!
Ben