convert petrol engine to LP gas

Assuming that you mean a Toyota CR41 motor, that runs on unleaded fuel. Then the answer is this. A properly designed and installed LPG conversion should not adversely affect the serviceable life of the motor as long as the appropriate maintenance is done.

If you bodge together something with bits off a scrap yard then your on your own.

I agree with Tobugrynbak. No worries, if done properly.

OK you sages ------- How do you make a fuel injection system work on LPG?

Oh, I understand..... Just throw away everything outside of the valve cover and replace it with the right new stuff...... The environazis will love that program.

Ed Weldon

GA from Oz. You guys never cease to amaze me. Must have something to do with spending your life walking around upside down with all the blood rushing to your head.

Seriously, thanks for the short course. LPG conversions maybe worth a study.

Ed Weldon

All good Ed,

We now also have "Injected LPG" systems that have LPG injectors that are mounted on the inlet manifold in conjunction with the petrol injectors. The LPG is delivered as a liquid rather than a gas. They've been monkeying around with that for a while now.

They also use a similar setup on Diesel engines to improve performance/economy. 90% diesel/10% LPG. With the LPG injected into the inlet manifold to mix with the air charge before the inlet valve opens. Yes that's got its own LPG engine management system tacked on as well.

All LPG systems fitted now are "Closed Loop" compliant systems and are well integrated with OEM engine management systems.

Personally I wouldn't fit LPG (again) because our registration regimes require a yearly roadworthy inspection, LPG fitted cars require another level of inspections again. Not all inspection stations can (or want to) do the whole inspections because you need to be certified for LPG. Now I don't begrudge the inspections because the mess a faulty (bodgy) LPG system can create can ruin your whole day(insert "BOOM!" here). But it can be a right PITA if the guy doing your inspection is having personal problems..

I dealt with Taxis here in Oz for around 16 years as a radio/meter technician and I've been involved with "fault finding" on the various LPG setups. Of course it helps to know a bit about everything as a radio techie. Just never know when you can help someone out.

Cheers

Perry

"will it damage engines internal parts or injectors long time."

no. the important thing is that you let a qualified technician do this, and not attempt to DIY if you don't have the training and know-how.

I had a 1980 Ford Courier Truck that I had a dual LP/gas system put on. I remember being told to occasionally switch over and run a tank of gasoline through to keep the top end lubricated.

I eventually burned a valve or two.

If you are going through the trouble to make the change. Why not go the rest of the way with hydrogen?

As such we have no problem with LPG and my experience is that you will not be able to double the millage, but it is economical due to its low price per liter compared to petrol.

Earlier it was Lovoto kit from Italy, but now it locally manufactured and also available with factory fitting and are common in our country also.

Even CNG fitted autos (3 wheelers) and buses are made in nos and 4 wheelers are also being attempted.

sridhar.

As such we have no problem with LPG and my experience is that you will not be able to double the millage, but it is economical due to its low price per liter compared to petrol. More over you can experience a faster pick up and higher speeds compared to petrol.

Earlier it was Lovoto kit from Italy, but now it locally manufactured and also available with factory fitting and are common in our country also.

Even CNG fitted autos (3 wheelers) and buses are made in nos and 4 wheelers are also being attempted.

sridhar.

One caveat about LP in your engine:

The oil will never get black.It will appear like new even after many miles.Change it on a regular schedule, because it will become dirty with abrasives just like in gasoline engines, and the additives wear out (or lose effectiveness).Most of the trucks that deliver LP also run on it.

This experience comes from working with LP powered fork lifts.

It is cheaper per gallon, but mainly because there is no highway tax.If you run a fleet, you will have to pay additional taxes for every mile.

thank you very much....