Page 96 - 2019 Technical NMT Hybrid4

H4 NMT – Engine
Main features 1/4

System Item M20A A25A

Small-head bolts are used for some places  

An offset crankshaft is used  

The resin cylinder head cover is used for weight reduction  

Aluminium cylinder block is used  

Laser cladded valve seats are used at intake side  

Spiny-type liners are used in the cylinder bores  

Engine The water jacket spacer is used at exhaust side of cylinder block to improve  

Proper emissions and reduce knock
Eliminating the No. 1 cylinder front side water jacket from the cylinder block, the

overall length of the engine has been compressed to achieve a more compact  
design

The OCV (Oil pressure Control Valve) for the variable oil pump is installed to the
crankcase to simplify the oil passage  

E12 “TORX” bolts are used in the connecting rod bolt  

The resin gear engine balancer assembly is used  