Thread: 186 in a 109?

thanks guys for the replies! i would rather keep the 2.25, as it is great offroad. and seems to have good bottom end power even with 35 inch tyres. is there any easy ways to increase power in the 2.25, i have a stromberg carby, extractors and 2 inch exhaust in it at the moment.

Don't do what many people did when they did this conversion. They bought a worn used engine from a backyard or a wrecker and installed it as is, proceeded to rev its head off up the highway with the new found power with predictable results. Then said the engine was no good in Land Rovers.

Give your Holden a thorough overhaul first. Fit a high capacity oil pump & engine oil cooler. Get the engine reconditioner to cross drill the crank before he grinds it, or better, get the rods and fully counter balanced crank from a blue 12 port engine and have the crankshaft man do the same and do the minor modification needed to fit this crank to the red block. The rods from the blue engines are what is known as "Starfire" rods and are better. There are a few other things you can do to improve the performance and durability of a Holden in a radically different application than it is designed for.