So what have I done to get

This is pretty much a standard 1978 2.25 litre 3 bearing petrol engine. Original 8:1 head and exhaust system. Overdrive used. Driving is fair to hard with mostly on-road use. No towing.

Consumption check 20 November 2000 - 21.5 MPG !!!!!!

This was a rarity and probably was a calculation error?

As a rolling mpg check with different mods such as the on-going best Weber main jet search to determine the best jet for 95 Octane UK fuel with a K&N on a 34 ICH. See table below.

MPG Mods etc. Date Use
19.1 205 tyres with 170 Weber main jet June 2002 R,L
  205 tyres with 175 Weber main jet July 2002 R,L
  7.50x16 AT tyres with *** Weber main jet    
18.2 7.50x16 'Guyane' MT with 175 Weber main jet Nov 2002 O,L

[Use- R=road; O=offroad; L=local,sort runs; C=Resonable run (cruise)]

Note - Accuracy of the speedo checked against a GPS reference on 10/2/02 and reads +-2 MPH (spot on for an Series LR!).

Consumption calculation
(mileage covered on 7.50 tyres) / (litres consumed/4.545) = MPG

Updated 13 January 2003

me at pjboomer@freeuk.com