the jdm motors have numbers on em too, like a b16a1Nguyen said:The JDM version is only stamped with B18C so only way would be either...
A. Intake Manifold is different I do believe.
B. The B18C SpecR has a b16 head on it and is stamped with PR3.
c. The SIR-G (GSR) has a GSR head on it and is stamped P72
I think that is the differnces. But I think that only USDM motors have a number on the end of hte Integra engines...I.E. B18C5 and B18C1 for Type R and GSR while the JDM ones just are stamped B18C.
The B16A2 is from a 99-00 Civic Si. The B16A3 is from a DOHC VTEC del Sol. The number behind the last letter primarily signifies head and head flow for the USDM cars.yellowd16 said:the jdm motors have numbers on em too, like a b16a1
well they have a2 a3 a4 i dont know how many though, but it signifies either year or exactly wich motor for wich car, like civic si r etc etc,