yes - totally recommend this lpg conversion - our 71/72 bay (1600TP, stock carb + exhaust etc) is only running on lpg now, I buy at 71p/litre on most forecourts and also on account with Countrywide Farmers (with their own 24/7 self-serve auto gas outlets at most of their stores now). also across Europe auto gas is readily available, on most autoroutes and in main towns.
I got my conversion done by Steve at Gasure in Chester - 55l cylindrical tank fitted under rear seat in a Devon Caravette without mods to the nice oak veneer!! this takes up some storage space, admittedly, but this has not proved an issue so far.
I have installed a Blos lpg mixer unit to replace the gas diffuser ring which Steve had fitted - this enables the stock oil bath air filter to be used and also gives much better gas supply and engine performance - following really helpful advice from Adam (67westy) on here.
I get about 5 miles per litre on the lpg, which costwise = about 9 miles per litre on petrol - not complaining with that!! - also good to know that the emissions are way cleaner, the engine oil stays cleaner longer, etc.
have had no maintenance issues, the engine actually runs better on lpg, with better torque, and on a long run the oil temp stays lower than it would it on petrol, so am not sure where this chat about issues with hotter running comes from?
The exhaust system I have is the VW Heritage stainless to stock design, the lpg pre-heat probe is drilled into one of the exhaust pipes and welded, this has been OK.
routine inspection of gas pipes and joints and the necessary air vents from the tank storage space is about all the maintenance that is needed. on the injection systems there is a gas filter that needs annual renewal, but not nec on the carb systems.
I don't have the Flashlube system as was advised that not needed on this set up. I don't know why!!
would be good to have a list of people on this Forum with lpg systems and their tips and hints. e.g. I am interested in an upgrade to 1776 but would be keen to keep the stock single carb, Blos valve and oil bath air filter - does anyone have experience of lpg on an engine other than the 1600?
(I also run an Audi 80 2.0E on lpg (this is an injection system) and have had no probs at all in 5 years...)
hope that helps!
cheers, Rob