Choosing An Engine

We do not operate to hard and fast rules as to what 'stage' an engine is.
We build engines ranging from slightly 'pepped up' to 'full blown'
race engines, with many variations in between.
Rather than dictate an engine spec, we prefer to discuss the
customer's requirements and agree upon the most appropriate
engine specification.
All engines are supplied with double ported, hand lapped oil pumps .
The engines are all balanced and supplied with a three piece clutch.

It is tempting to build all engines to 1950 cm³; however, the thinness of the bores tends to allow bore flex and lozenging which in turn tends to allow the engine to burn oil. This can be overcome to an extent with the use of Race Quality pistons, with thin, light piston rings. The cost, of around £450 per set is also a consideration. Which is fine for Race use.

For Road use we recommend +60 thou overbore to give a capacity of
1867 cm³. The increased bore size enhances midrange power, producing
a crisp, sharp, free revving engine.

All our MGB engines are fitted with liners, this increases bhp and reliability.

If you are intending to use the car for Motorway/Highway cruising and the engine is unlikely to run past 4700-4900 rpm, an Econotune cylinder head and a standard camshaft combination will produce plenty of low rpm and mid rpm torque, making a smooth powerful unit that 'goes better' when you put your foot down uphill without having to change down a gear.

For a more spirited performance whilst still retaining perfect town manners, the Fast Road cylinder head and the Piper HR270 camshaft combination works well. Having a smooth power delivery from idle to around 5600rpm.

If you intend using the car for Track Test Days, Fast Road use, occasional Sprint/Autotesting, the Fast Road cylinder head and Piper HR285 camshaft combination is the ideal starting point. The idle is slightly rough/loping, becoming smooth at around 1300 rpm under light throttle. The engine will pull smoothly to just under 3000 rpm....then it lets rip to 6000 rpm with copious amounts of power and torque. The exhaust system could be changed for a larger bore, single box-type to enhance the power.
The camshaft is capable of producing even more power with a change to either 1 3/4" SU's or a 45 Weber. The engine will rev freely to around 6500 rpm.

We only use billet, cross drilled camshafts.