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J_K Gate Opener
Joined: 30 Apr 2009 Odometer: 3
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Posted: Wed May 27, 2009 2:07 pm Post subject: LPG kits. Which one?
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Now that petrols back around £1/ltr, I'm very seriously considering an LPG kit.
It HAS to be a sequential kit and I'd remove one of my rear seats in the SWB pajero to get the biggest tank I could, fitted length ways.
The problem is, there are so many kits out there.
What are good kits and what are bad ones?
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Rossko Articulating
Joined: 23 Jan 2007 Odometer: 757
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Posted: Wed May 27, 2009 5:16 pm Post subject: Re: LPG kits. Which one?
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J_K wrote: | The problem is, there are so many kits out there.
What are good kits and what are bad ones? |
I never give a straight answer to "which is best" because there isn't one
Things to take into account when choosing -
You get what you pay for.
Better quality is likely to last longer - do you need it to do 250,000 miles or more like 50,000, in which case cheaper may do.
Not all systems are available to the DIYer, notably the top-end makers.
There are indeed a lot of makes available - choosing an uncommon or new-to-market one may leave you in the lurch if you need help to get sorted, or need spares or support later on.
To get best results you need some understanding of engine management.
Your insurers may want to see a certificate - can you get one, how much, can you find out the standards you need to meet.
Any choice must be able to deal with the engine horsepower - this is a per-cylinder issue for injection systems, as well as overall bhp.
The supplier should be asking exactly what you have, in order to supply appropriately sized parts. One-size does not fit all.
Accept no 'workarounds' like "it seamlessly switches to petrol at high demands". That just means its inadequate, you want to run on gas after all.
Some engines, notably many japs, are prone to valve seat recession when run long term on LPG - they miss the petrol additives. Consider fitting a valve-saver solution of some kind as a precaution.
A very few newer cars require exotic solutions - those with GDI or active fuel pressure control for instance - don't think your uncertain-age Pajero is one but check.
good luck, Ross K
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