Cylinder head machine work and modification, including:
- bore for larger cylinders
- multi-angle valve jobs
- replace valve guides
- fit new valve seats
- custom porting
- flowbench testing
- match port manifolds
- machine guide bosses for dual springs
- reface and/or backcut valves
Multi-angle valve job on stock 040 twin port head (35.5mm x 32mm)
Flow testing the entire induction system on the JMR flowbench
Boring heads for 90.5mm cylinders
Valve job
JMR 044 Street-Torque head, 40mm x 35.5mm
Good for 157ftlb torque on a 2110cc bus engine