K24 Test Engine - Base Line Test - Part 1

K24 Test Engine Base Line Test - December 2022

A long time has passed since we last carried out engine R&D on the K24 engine, so we thought it was time to re-visit the platform, and at the same time challenge ourselves by setting a horsepower goal that we have not seen before.

Our goal with this project is to see what can be done without changing anything below the head gasket, i.e. a stock bottom end with just the oil pump changed.

Before any major work can be done we need to establish a baseline. With the engine in the state of modification listed below, we carried out some dyno pulls on our engine dyno. Below you can see the results.


Current specification:

Used 83,000 mile K24A3 Stripped, checked and reassembled

ARP Head studs


Cometic head gasket

Genuine Honda PRB Oil pump

Type R (EP3) Cams and valve springs

New valve stem seals

CPL dual valve spring bases

Honda RBC Inlet manifold – 74mm

CPL Racing large bore cold air intake with battery relocation kit

Race header

3 inch catback exhaust

74mm throttle body

Fuel injector clinic 525cc injectors

The engine was tuned using a Hondata Kpro V4

Please see below for some pictures of the work carried out and some of the parts used, please feel free to email us with any questions you have.

K24 BeforeBlock cleanARPCrank no polishCrank polishedPiston and bearingsBlock with studsSpring bases

Engine dynoSpring pressure


 Moving forward, we will show what it takes to increase the power to around the 300hp mark. So keep an eye out for the next instalment.............

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