what does this mean

[tweakman]

when u say that u have a b18c5 i kno that the first two letters is the size of the engine 1.8L or a h22 in a prelude 2.2L but what does the "h" mean or the c5 or a or c1

 

[crx]

"h" is the series, c5 and c1 is like a trim level b18 ls, b18c gsr, b18c5 type R
etc.

 

[tweakman]

what is a trim level???

 

[SleEPeR_CRX]

it suggests the model and year of engine, b18a ( 90-93 integras non gsr), b18b ( 1995-present integra's non gsr), b18c1 ( GSR), b18c5( type R), h22a ( DOHC Vtec Prelude)