LPG conversions

**Darryl2.2DTI** · 14th October 2008, 18:10

has anyone on these forums had an lpg conversion. if so whats the costs of the change and would you recomend it.

**mac andy** · 14th October 2008, 19:59

hi, ive had 3 cars on lpg - fiat marea 175000 miles,daewoo nubira 85000 miles and my current vectra 1.8 dualfuel 156000 miles, i have never had any problems with the lpg running (touch wood) and as i do about 3000 miles per month it has saved me a fortune,the cost of my fiat conversion was £1500 or so the other cars i bought ready converted, which i think is the best way as when they are sold second hand you dont recoupe the cost of conversion. any questions just ask

andy

**Ste** · 15th October 2008, 11:17

I think it depends on how handy you are. You can get Good quality conversion kits for around the £750 mark all in including toroidal tank.
Obviously, installation quality can vary too.

You would need a certificate for around the £50 mark to qualify for lower tax, and for Ins purposes.

The installation is totally do-able if you are fairly handy, the only mental bit is drilling into the manifold to get the gas injectors in without introducing swarf into the power cylinders - best to remove manifold and drill on bench.

I am going to do a LPG conversion on my next year (purchase now deferred a little due to economic climate), I'll do it myself as it will save me £££ and being a competant and fully qualified Engineer I have no worries about my ability to do a good job.

The cost of LPG varies considerably. Effective MPG comparisons take it to around 75 mpg (based on COST) for a duty cycle that normally delivers about 40mpg for petrol. LPG is considerably cheaper than petrol, but you will see about 5-10% reduction in actual fuel economy. This reduction is more than offset by the comparative cost of fuel.
Read up on the subject, Google search will find loads of info.

**Penfold101** · 15th October 2008, 11:24

Minor point and I will probably make myself look like an idiot, but just to make sure - you aren't planning on doing this to a diesel are you mate...?

**Sean-2.2Direct** · 15th October 2008, 11:34

i was looking to get mine converted till they told me sorry we cant convert Direct Injection engines

well gutted haha

**Ste** · 15th October 2008, 11:48

Look Here_for_some_info

**Sean-2.2Direct** · 15th October 2008, 11:56

i have just emailed them as this is a different company if they can convert my direct i will well be getting that done

**Darryl2.2DTI** · 17th October 2008, 16:35

lots of good advice there peeps. yeh it will be a diesel id be changing. its for my wife and i like the idea of cheaper tax as i jst paid 115 quid for 6 months tax last month. she does 115miles a week. wonder how much of a saving id make and how long it would take to make my money back.

**_ZS_** · 17th October 2008, 17:21

You can LPG diesels no problems, the LPG is used as a catalyst to aid burning. There's a tiny amount of gas introduced into the charge air, which can bring some diesels well over 100mpg if driven right.

**Penfold101** · 17th October 2008, 18:45

115 miles a week = 450 miles a month = 4900 miles a year = roughly 500-600 quid a year in fuel ish.

basically, I wouldn't have thought it was worth doing mate - it would be for the blokes doing 20 - 30K miles a year that it would see any major benefit for...

Those are very rough figures though, but it's a general idea of just how little youa ctually spend on fuel compared to some...