Final machining decisions on my MGB performance engine build

Before we take my engine back to the machine shop for final machining, we have to make some decisions as to know what to tell them to do. Taking into account the engine performance we are looking for as well as the octane ratings of the fuel that is readily available around us, I discuss how we determined the piston to deck height we want, and what head gasket we’re going to use to get the compression where we want it to be.

[@stooartbabay]

You can get multi layer/modern type gaskets now, they come in 3 different thicknesses so you can choose which suits your desired CR.
At the compression ratios you mentioned, I would not worry too much about octane ratings… it will be fine.
You can get main caps 2 and 4 converted to steel if you like but it requires a line hone which may cause more issues that it’s worth… and depends on how you want to use the car…
Yellow Terror in Australia sell a fantastic set of roller rockers for the MGB.. but you will need to have the rods sized accordingly… but they really are awesome.
:)

[@mgbgtguy]

The Cometic gasket I will be using is a MLS gasket, and they come in 14 different thicknesses… they’re just a bit pricey.
These engines are known for being a bit finicky to tune on pump fuel (at least what we have here in the states) when you get into the compression range I’m looking for with limit of pretty much 10:1 on 93 octane (US rating) without having to back the timing down a lot to keep it from pinging.