edzt

Has any one any information on converting a scoob to run on LPG. I saw a web site for a place that specialized in turbos and have lost it.

Dream Weaver

Ed

Nothing on the Scoob in particular, but the following is a company local to me (and you really) in Blackburn They specialise in LPG conversions.

Steve001

iTrader: (7)

i looked into this subject about 6 months ago (things may have changed) BUT the company i contacted said that was pos to convert a turbo (in theory). however, as i understand it gas is much lighter that petrol and a car running on more than .7 boost could blow back gas in to the engine with explosive effects!!! plus turbo cars are not a priority for developement.

i have an idea, but as im not a tech minded person i will probably be blown out on this.

if boost can be detected electronicly have the system switch automaticaly to petrol when boost is on. therefor when crusing off boost (say a motorway) the system runs on LPG

(sitting, hard hat on waiting for blowouts )

heres the email i received from Autogas (N.West) ltd.

The problem with converting turbo cars is that LPG systems are designed to work around atmospheric pressure. And when a turbo car is not under boost there is not a problem. If you try converting a turbo vehicle introducing the gas in front of the turbo, ie. blow through, once the vehicle starts to build boost pressure it has the effect of forcing the gas back out of the engine. The other alternative is to introduce the gas before the turbo, ie. suck through, In theory this type of installation would work, but for the fact turbo vehicles tend to run radical camshaft profiles, which allow for over lapping valves. Whilst on petrol this does not cause a problem, but when on gas it only takes a small spark to escape into the intake side of the engine and this is sufficient to blow the manifold off the engine, due to the high volume of gas in the system.

New gas injection systems may be the answer for turbo vehicles. But even with these systems the amount of turbo boost is still a critical factor. We believe (but this is unproven at this time) that a maximum boost pressure of 0.7 bar may be acceptable. We are constantley working on this problem, but because turbo vehicles represent such a small part of LPG conversion work, it is therefore not at the top of the development list.

if you understand this fully your comments please




[This message has been edited by Steve001 (edited 21 June 2001).]

EvoBarry

You could also try emailing these guys,they could probably help you, and they are Scooby enthusiasts too, which is nice...

Markus

EvoBarrie,
You would not happen to be the chap who's getting their EVO converted to LPG would you?

Mate of mine and I were discussing LPG and he mentioned a few places he had talked to and one of them were doing an LPG conversion on an EVO, so we're both interested to hear about how that goes and the benefits and disadvantages.

EvoBarry

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:<HR>Originally posted by Markus:
<B>EvoBarrie,
You would not happen to be the chap who's getting their EVO converted to LPG would you?

Mate of mine and I were discussing LPG and he mentioned a few places he had talked to and one of them were doing an LPG conversion on an EVO, so we're both interested to hear about how that goes and the benefits and disadvantages.[/quote]

Markus, I have a Prelude with LPG fitted which has unfortunately died of unrelated causes now, well I think 178,000 miles is a good enough innings for any car..


The EVO in my nickname is just so any EVO readers know its me from that forum...sorry for the confusion!

The poweredbygas lads are mates of mine, if you have any questions about conversions they will be happy to help you out....

One thing to remember, whilst you lose some power running LPG (not that much with injectors though), LPG itself has a calorific value equating to 112 octane...which is very good for these Jap rally monsters. No more pinking there then!

edzt

thanks guys
ed

RON

A mate of mine has just converted his VW transporter, (Deisel Turbo). He's convinced that the guy who sold him his kit would be able to do a Scoob, if I remeber rightly he was going to do one recently, I don't know the outcome, but he was absolutely sure that it would work and he was trying to get me to have my myoo done, personally I'd rather wait til someone else has sorted out all the possible probs, and then maybe I might consider it, apparently it's better to run them as a 'dual-fuel' rather than on pure gas, The ecu is supposed to sort it all out for you, you put gas in, the ecu senses that it's running too rich and leans off the petrol until it's right, you can keep increasing the amount of gas until you reach the optimum (apparently)
Like I said I don't know much more than that, I'm sure the guy has a website I'll try and get the url, and post-it.
Ron

spudgun

i have gas in my car. friday night vindaloo, saturday, lots of gas, and no conversion required. should cost u about ten quid. contact your local curry house for full details

scrappydoo

A mate of mine has recently had his peugeot done.It cost him £1500.I asked the guy about converting my scooby and he said that he wouldnt touch it.He mentioned that years back subaru had trouble with the 4th cylinder or something like that and as a result he would find it difficult, so basically he told me to bugger off. Besides it bloody stinks anyway, and you can get serious burns when removing the pump unit.I know its cheaper (35p /litre) but there is a considerable loss of power, but hey you can always flick the switch and run back on petrol.
Scrappy