Cylinder Head Specs

Mini Technical Sections Problems, Questions and Technical
1

Hi everyone, just found this mini cylinder head for sale and here are the specs:

Drilled to 11 Stud

17cc

35.7mm Inlet valves [3 angle]

29mm Exhaust valves [3 angle]

3-cut angle seats

Bronze valve guides

Double Valve Springs

inlet and exhaust ports are as described as huge and inlets look very nicely ported..

also apparantly the valves have been sleeved aswell because of the size.

Would this give much power increase over a standard Metro possibly MG metro 1275cc engine with standard cylinder head but with 1.5 roller rockers and soon to be coupled with twin 1.5" SU carbs?
Also is 17cc or 22cc combustions size better, i’m guessing the 17cc means more compression?

Many thanks, Evan.

2

Has anyone had experience fitting a head of this standard over a standard engine, also found a head named as stage 5 ( obviously varies as different manufactures have different classes for the stages)

16.5mm chamber size

37mm Stainless Wasted Stem Inlet Valves

29mm Exhaust Valves

Tunnel Ports

Bronze Guides

Double Valve Springs

Alloy/Titanium Top Caps