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 Post subject: Subaru Vialle Cars
PostPosted: Fri Nov 18, 2016 7:27 pm 
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Been noticing a few Subaru's for sale lately fitted with the so called 'factory' lpg system by Vialle.

Anyone have any experience of this system at all ?

Cheers all.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Fri Nov 18, 2016 8:00 pm 
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Yes I have repaired several.
Strange to see the little plastic MIG CO2 type pipes between injectors and manifold frosting up :lol:
Some problems are caused on these systems by mechanics doing general work on the car where they've had to move injectors / wiring / manifold / etc.

Simon

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Fri Nov 18, 2016 9:46 pm 
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Hiya Simon , so what's your take on them , do they stay the course over high
mileage without the burning valve seats of old , usually coming up for sale on
100k or more miles so would they be knacked by then ?


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sat Nov 19, 2016 8:11 pm 
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Obviously those I've seen I've seen to fix :lol: From memory I think most had done around 100k but the problems were with the LPG system not the engine itself.

I don't remember seeing a lube system fitted on one and have never seen one with a problem associated with VSR. However, I don't know if these models are fitted with tougher valves / if the vehicles I've seen wouldn't have suffered VSR even without a lube or with a vapour injection system. I cannot see how liquid injection could make any difference, especially in case of the exhaust valves. The exhaust valve is hardly going to benefit from any marginally cooler intake charge/fuel intake temp!

The liquid LPG injectors on these models are apparently a very old spec petrol injector that can handle the higher pressure of the liquid LPG (while of course not having any components that are not LPG compatible). Vialle went bust shortly after I fixed the last one I worked on, I've had no call to try to get hold of parts since then.

Simon

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sat Nov 19, 2016 9:35 pm 
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Location: South end of North Yorkshire
There is a version of the EJ20 (ie 2.0 four cylinder) Subaru engine with hardened valve seats for LPG - but it was only fitted in Europe, not the UK. Most people in the Subaru community don't rate the UK 'factory' LPG systems. By contrast the European ones have a totally different system (probably AEB based, though I'm not sure) which seems to be reliable.

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 10:15 am 
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LPGC wrote:
Obviously those I've seen I've seen to fix :lol: From memory I think most had done around 100k but the problems were with the LPG system not the engine itself.

I don't remember seeing a lube system fitted on one and have never seen one with a problem associated with VSR. However, I don't know if these models are fitted with tougher valves / if the vehicles I've seen wouldn't have suffered VSR even without a lube or with a vapour injection system. I cannot see how liquid injection could make any difference, especially in case of the exhaust valves. The exhaust valve is hardly going to benefit from any marginally cooler intake charge/fuel intake temp!

The liquid LPG injectors on these models are apparently a very old spec petrol injector that can handle the higher pressure of the liquid LPG (while of course not having any components that are not LPG compatible). Vialle went bust shortly after I fixed the last one I worked on, I've had no call to try to get hold of parts since then.

Simon


Cheers Simon all good information , thanks.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 10:19 am 
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rich r wrote:
There is a version of the EJ20 (ie 2.0 four cylinder) Subaru engine with hardened valve seats for LPG - but it was only fitted in Europe, not the UK. Most people in the Subaru community don't rate the UK 'factory' LPG systems. By contrast the European ones have a totally different system (probably AEB based, though I'm not sure) which seems to be reliable.


Hi Rich , know about the different cylinder heads fitted on euro spec cars , we have a member from
slovenia on ukl who has one of these cars , think he said it was a brc system though not sure either.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 10:24 am 
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Heh - where do you think I got the information from :)

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 10:59 am 
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RichR's the man to ask about Subaru stuff.

I've seen the Vialle liquid injection system on the H6 engine.

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 4:18 pm 
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That's interesting Simon, have seen a few 2.0 Foresters and Legacys for sale
and even a 2.5 Outback but never a 3.0 didn't know they made them.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 4:35 pm 
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Yeh, Rich owns a 3L Outback, I converted it.
The factory Vialle installs on 3L H6 I've seen have been in Subaru Tribeca's.

Simon

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 5:29 pm 
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Know Rich from ukl forum, also have an H6 Legacy on a Stag system, always
forget about the Tribica as the only one i've ever seen was in a dealership, wonder
if they ever offered the lpg on the H6 Outback.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 6:23 pm 
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Gen IV Legacy/Outback factory LPG conversion was only available on the Legacy 2.0. As Outback only comes in 2.5 or 3.0 it wasn't available.

So yeah, the Tribeca was the only 3.0 with LPG from new.

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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 7:26 pm 
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That's interesting Rich the outback i had looked at is now sold but i found
two other cars claiming to be 'factory' fitted, wishful thinking perhaps.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 9:41 pm 
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I think I am right in saying that there is no technical reason why liquid LPG injection systems need to be cold started on petrol.

One major advantage over dry gas injection at least...


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Sun Nov 20, 2016 11:18 pm 
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It would depend where they are picking their timing/calibration from - if they have their own fuelling map as opposed to being slaved off the petrol system then yes (some of the older factory fit vapour systems do this, such as the Necam ones), but if its just applying a multiplier then cold start enrichment would cause over-fuelling on LPG when its not warmed up.


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 Post subject: Re: Subaru Vialle Cars
PostPosted: Mon Nov 21, 2016 11:23 am 
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That's right Bri, and they do still work as a slave to the petrol system.

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