The Honda B series engine is still very popular around the world with lots of fans. Since the majority of these engines are of high mileage, customers can be concerned about its condition. Toda Racing has developed an overhaul (O/H) piston kit specifically for such engines. Designed with a longer skirt compared to our standard high comp piston and an only mild increase in compression ratio over the stock Honda. This makes it more of a straight swap overhaul piston compared to most aftermarket pistons.
B16A/B18C Engine O/H Piston KIT

Engine Type

B16A B18C
Part No.
Price (set)
Displacement 1615cc 1820cc
Crown Volume *1 4.8cc/4.8cc 4.8cc/2.4cc
Projection Height *2 ±0mm -0.45mm
Reference C/R *3 ξ≒10.7 :1 ξ≒11.4 :1
Remarks *Connecting rod requires converting to fully floating.
*1:Crown volume is measured "from the piston shoulder"/"from the deck of the block".
*2:Piston shoulder height is measured from the deck of the block.
*3:The compression ratios given above are only to be taken as a guide (when TODA t=0.6mm head gasket is used), measurements are required.