Date: Tue, 28 Jan 2003 19:10:41 +0100
From: "Mark Gerritsma" <magernopsam.nld>
Subject: Re: Autogas (LPG) conversions.


SimonJ <Menopsam.net> schreef: >> With the higher Octane, a Saab turbo should be less inclined to pink >> too, Hmm. Seems tasty, and so cheap to run on. >> > A saab Turbo will run particularly well on LPG, as the APC will give > you more boost to accomodate the higher octane fuel, so will quite > possibly give more power than running on petrol, especially if you > fit an ignition processor to remap the timing curve. > LPG systems are a little more complicated for a turbo, but by no means > impossible. There is one point to note though. LPG burns hotter than regular gasoline, so the exhaust valves get hotter too. Because of the exhaust temperatures getting higher some cars are prone to burnt valves. Because the engine is turbocharged to start with however, the valves will probably be able to cope with the increase without a problem. In Holland the dealers also recommend to use sparkplugs which are a grade 'colder' (again because of the higher temperatures). If possible, try to get a multipoint liquid LPG injection system. This is technically superior to systems with evaporators, although more expensive. It also limits the risk of a back-fire to practically zero. A back-fire would be very expensive, because I can't image the turbo liking that to happen. -- Mager

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