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Car Forum / Australian Car Forums / General Car Topics (Australian group) / May 2008

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LPG reccomendations

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Jeßus - 16 May 2008 22:55 GMT
Gday All,

Due to my 'old' server vaporising (by the looks of it) I can't find the
old posts I'm looking for. Anyway, there was some discussion about what
are good and not so good brands of LPG systems out there.

I do recall that two were considered better than the rest - which were
these again?

If it makes a difference, I wanna put a 75 series Cruiser ute on gas, so
any systems particularly well set up for these is what I'm really
interested in.

Thanks.
Jason James - 17 May 2008 01:55 GMT
> Gday All,
>
[quoted text clipped - 8 lines]
> any systems particularly well set up for these is what I'm really
> interested in.

One important thing when doing a conversion,..two actually - if your Cruiser
has a cast-iron head, you need to get at least the exhaust valve seats
replaced with stellite or some such hardend insert and ignition. What some
installers do, is leave the ignition standard. (Like mine did) This robs the
engine of torque and power down low as LPG likes more initial advance, then
at cruising speed more advance which remains steady compared to petrol which
peaks out at a higher value. Make sure the mechanic shows you the new
dizzy/adjusted dizzy/ If you are going dual-fuel, the mods to the ignition
will be a little more expensive as you switch from one fuel to the other.

Jason
Jeßus - 17 May 2008 08:45 GMT
>> Gday All,
>>
[quoted text clipped - 20 lines]
>
> Jason

Good stuff, thanks for the tips, particularly the timing.

Still has the 3F engine, was considering an upgrade to at least the fuel
injected version, if not the later 4.5L twin cam EFI engine. Regardless,
she's going on gas... it's horrific filling up the tanks even with 91RON :-|
Toby Ponsenby - 17 May 2008 15:15 GMT
>>> Gday All,
>>>
[quoted text clipped - 28 lines]
> she's going on gas... it's horrific filling up the tanks even with 91RON
> :-|

Big Question is undoubtedly how long you're going to keep the machine.

The Very best set up is going to be OMV vapour phase injection on a
petrol injected engine.
And it's the most expensive, natch.

Some of the standard mixer types as seen on ford taxis seem pretty good,
though:-)

Signature

Toby

Noddy - 17 May 2008 16:01 GMT
> Big Question is undoubtedly how long you're going to keep the machine.
>
[quoted text clipped - 4 lines]
> Some of the standard mixer types as seen on ford taxis seem pretty good,
> though:-)

An Impco or OHG vapour system will return pretty good performance for not a
lot of money and be very reliable. Direct gas injection is the way to go,
but it needs to be a *hell* of a lot cheaper for it to be a viable option.

--
Regards,
Noddy.
Jeßus - 17 May 2008 23:03 GMT
>>>> Gday All,
>>>>
[quoted text clipped - 28 lines]
>
> Big Question is undoubtedly how long you're going to keep the machine.

I reckon long term, as it's straight and completely rust free (amazing
considering it's age). I got carried away last week when cleaning the
cab out, and decided to completely strip the interior.
Only took approx. 12 hours to strip, clean and refit. The simplicity of
it is such a breath of fresh air :)
Couldn't find even surface rust anywhere, so all the more reason to set
it up how I'd really like it I reckon, and it's gonna do everything I
need from a 4WD ute as far as I can forsee into the future.

> The Very best set up is going to be OMV vapour phase injection on a
> petrol injected engine.
> And it's the most expensive, natch.
>
> Some of the standard mixer types as seen on ford taxis seem pretty good,
> though:-)

Noted!
Toby Ponsenby - 17 May 2008 15:16 GMT
>>> Gday All,
>>>
[quoted text clipped - 28 lines]
> she's going on gas... it's horrific filling up the tanks even with 91RON
> :-|

Big Question is undoubtedly how long you're going to keep the machine.

The Very best set up is going to be OMV vapour phase injection on a
petrol injected engine.
And it's the most expensive, natch.

Some of the standard mixer types as seen on ford taxis seem pretty good,
though:-)

Signature

Toby

John McKenzie - 17 May 2008 23:52 GMT
> Gday All,
>
[quoted text clipped - 10 lines]
>
> Thanks.

In your shoes - an impco model E convertor (you'd probably get by with
an L) and an impco 225 mixer represent reliability and affordability.

I'd make a plug for ohg, but good luck finding them these days.

Signature

John McKenzie

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Jeßus - 19 May 2008 02:48 GMT
>> Gday All,
>>
[quoted text clipped - 15 lines]
>
> I'd make a plug for ohg, but good luck finding them these days.

Impco - I'll keep that one on my list, thanks :)
 
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