MRP Developed CNC Ported 4age 20v Head
Developed with our partners direct in NZ we have created a hi flowing 4age 20v head CNC ported
Our heads don’t feature just 1 port suits all, all our porting is done in collaboration with our customers to suit their setup. Our ports differ between turbo, n/a, 1600cc, 1800cc setups etc. Port shape, throat size etc is all calculated based on your requirements and to suit your application, Drag racing is completely different to rally or circuit racing.
Our heads not only feature high CFM flow but Port velocity is what we concentrate on especially, this is how we obtain good overall power through the entire rev range, not just peak power.
Full CNC ported intake & exhaust ports
Flow Intake 250cfm @ 10.8mm lift (280cfm @ 1/2″)
Flow Exhaust 200CFM @ 10.8mm lift
This is for a bare ported 20v head – Customer needs to supply us a core head or we can provide a head at extra cost.
OEM Items Supplied:
Cam Caps & bolts
Upgrade Items Optional:
Up-rated valve springs Toda or Supertech
Up-rated valves Supertech +1mm
Valve seat cutting
Port matching of inlet manifold
Installation of valve train