Do any one noe about lpg conversion?

Question

i want to noe what is needes to be changed when u convert a car to using lpg, also what are the parts required.

Answer 1

Yes i am very familiar with gaseous fuel conversions.

There are different ways to convert your vehicle to run on LPG or propane. The least expensive is to simply install the tank, lines, mixer, etc. This is ok on engines designed to run on unleaded fuel(they have induction hardened valve seats or on aluminum heads they have nickle seat inserts) but hard driving, heavy loads, or about 30,000 miles of normal driving will cause exhaust valve recession in iron heads and valve damage in aluminum heads because they don't have valve seat widths sufficient to disipate the extreme heat caused by any type of gaseous fuel. There are two options 1. you can remove the heads and install nickle seats and sever duty exaust valves with wide seats(.100) or 2. If your vigilant and install a water/alchohol injector to add coolant to your incoming air/fuel mix this will stop the valve damage. You can even make your own out of a windsheild washer fluid bottle out of a scrap car and run a 50/50 mix of water and washer fluid yes, i said washer fluid it only costs about $1 a gallon and is made of alchohol and works well.

Further LPG is best suited for compression ratios of 15:1 most cars are only 9:1 at best so much of your fuel value is wasted by the low compression and you will experience a power loss and is also ineffecient. CNG or compressed natural gas is best suited for compression ratios of around 9:1 but is less powerful than propane or gasoline. If your planning to install LPG on a turbo charged engine the compression ratio issues are eleviated as the turbo acts to rase the compression as well the factory ingnition curve(computer spark control) is very compatible with LPG. Yes a part of converting a non-turbo car will be installing another ignition system suitable for propanes power curve or suffer the loss of power and mileage. You may be able to remap your factory ignition curve but this is about as costly as an aftermaket system if you can't do it yourself. Due to the availibility of propane it is also advised that you make the conversion duel fuel (keep you gasoline system operational just dont use it at the same time).

If you have aditional questions feel free to contact me.

Answer 2

This is a job for professionals only and sometimes the results can be poor. Have done a change to a ford and it ran bad for the rest of its life. I have also had a range Rover and that was good. Bear in mind that mpg wont improve, just the cost of the fuel

Answer 3

tank, lung, pipes and switches.