Shorrock C75B Supercharger

In 1959 Geoff Healey set out on an expedition to the Bonneville Salt Flats in Utah, USA to atIMG_1525tack some international class records as a publicity exercise. They took two cars for the attempt, one of which was “based on an MGA chassis frame and fitted with a blown 950cc Sprite engine….The engine was blown by a Shorrock supercharger, a creation of Noel and Chris Shorrock, an eccentric vane type…” This, a quote from Geoff’s book “More Healeys”. He goes on to say: “To obtain the additional power required for these high speeds an ordinary ‘Shorrock’ low pressure, belt driven, super-charger

kit is fitted. This gives a manifold pressure of 6 to 7 lbs per square inch and the engine will produce 78 bhp at 5500 rpm or 86 bhp at 6000″.

Shorrock Supercharged BMC A-Series Engine810

So began the supercharging of Sprites and this is the reason the name Bonneville Sprite was associated with cars fitted with the Shorrock supercharger. These cars usually had the wire wheel conversion with Girling disc front brakes and 8″ rear drums making them also ‘Sebring Sprites’. It is belived that the “Supercharged” badge came with the Shorrock kit for Sprites.

Below are a number of brochures and articles relating to the installation and maintenance of the Shorrock C75B on the Austin-Healey Sprite:

To Blow Or Not To Blow »    Shorrock Dismantling & Reassembly »    Shorrock Fitting Instructions »    Shorrock Tec Info »

Brendan’s Shorrock within his MKIIa sprite

IMG_1578

A typical Kit from the UK

IMG_1743

C75B Shorrock Blower

IMG_1744

The Blower in the bay

 

 

 

 

 

 

 

 

 

more info can be found at http://www.shorrocksuperchargers.co.uk/

Leave a Reply

Your email address will not be published. Required fields are marked *