Here at GCAP Performance we have a formidable reputation for building engines for power and reliability, with drivers using our set ups in high powered drag racers, fast road and track use.

Our engine builds are not a typical thrown together service found in most shops. We build all our engines using the latest tools and technologies, combined with years of race knowledge and mechanical finesse, to put together engines designed to handle long periods of high loads under extensive use.


We offer a range of engine rebuilding options, from basic bottom end forging to complete 'engine out' overhauls with forged internals and port and polished cylinder heads. Below are some of the comprehensive services we offer:


-Complete engine blueprinting

-Fully forged engine builds using forged pistons and conrods.

-Block machining for oversize pistons.

-Cylinder honing.

-Crank polishing.

-Complete head overhauls including skimming, valve lapping, seat cutting, tappet clearances, oversize valves, bronze guides, uprated stem seals, performance camshafts, uprated valve springs.

-Port and polished heads.

-Block wedging.

-Hot bath and degreasing of engine components.

-Precision measuring of engine components within 0.001inch tolerance.

-Uprated race bearings, seals, bolts, studs and nuts.

-Engine dress up including heat resistant and rust proof paint on blocks, powdercoating and spraying.

Fortunately, we do not offer what has been nicknamed in tuning scene as ‘rod jobs’. All of our engine builds ( including installing forged rods on the Z20LEH engine) will mean all components will be stripped and cleaned before re-installation. All new gaskets and seals installed, pistons deep cleaned and re-ringed, full headwork, new timing belt and water pump installed.


We will always sit down with the customer to determine how the engine will be used and create a build plan tailored to the individual needs of the customer. All of our engines have a basic running in process completed by us, and we always offer a FREE health check and oil change after a set amount of miles to ensure the longevity of the engine and to check the progress of it.

So whatever the reason your engine requires an overhaul, let us know your requirements and we can build the engine to your specification.



GCAP Performance

6 Powis Mews

Notting Hill


W11 1JN

© Copyright GCAP Performance 2020