doddie

Just a quick update, the LPG is no almost 16mpg. I bit the bullet and took it to another installer who straight away saw the mixer on top of the carb had far to large an aperture for a decent venturi. He then made his own mixer on the lathe and hey presto the mpg has jumped by 5 mpg and more power also. Ithink the apeture was 33mm which he said would have gone on a BMW M3 in the old days of single point systems!!! Also found a blow on the exhaust down pipe which wasn't helping. Thanks for all the replies guys.....

In Tiverton, Devon. Since I posted I have just recorded 15.2mpg on lpg. I was getting fed up with the economy I was getting so I took it to a local installer that a number of people recommended. He immediately told me the venturi on top of the carb had a 32mm opening which was far too big. He then manufactured a new one on a lathe with 3mm smaller opening and immediately the engine sounded sweeter (well as sweet as they ever sound), more power and straight away 12mpg round town and 3 days later on filling up again 15.2mpg. So hopefully that is looking better but will keep an eye on the results and will post on this thread after a few more runs.

Thanks for the replies guys, will give it a go as I am down soon for my 5000 mile lpg service. Might take the timing light so the guy can get it set up properly while attached to the gas analyser!! Cheers

Could I ask anyone who has LPG on a series 3 2.25 what MPG they are getting. Mine is Max 10.5. I have Fairey overdrive, engine serviced, New unleaded head from Turner, spark plug gaps at 0.65 (as suggested), replacement electronic distributor, free wheel hubs. Every time I rotate the dizzy it makes it worse (mpg wise). I have even bought a timing gun so it is set at TDC. Down side is roof rack (due to back having 90l tank in it) but this only dropped the mpg bu 0.5 mpg. Had the lpg for 3 months and only saved myself five pounds and then only because petrol is so high at the moment. Any further suggestions gratefully recieved. Oh yes next project is electric fan (already posted a question about that one!!)

That looks like a great install, can I ask a question in this thread instead of starting a new one? I was trying to install a mondeo pull fan behind the radiator but either someone has installed a larger rad at some point or I have a non standard water pump (as it has 3 outlets, one of which is blanked off) because I only have 25mm clearance and the fan does not fit So onto my question, is there anything to stop me mounting the fan in front of the rad but turned over to make it a push fan? or am I safer selling this one on fleabay and buying a proper push fan? (First landrover, frustrating but loads of fun - Just for info 1973 Series 3 with 5 bearing engine with metal fan at some point)