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david p Guest
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Posted: Thu Dec 09, 2010 8:36 pm Post subject: lpg only with the current colder weather on a rover v8?
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any tips ?
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scut44 Guest
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Posted: Thu Dec 09, 2010 9:30 pm Post subject:
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I have ran LPG at around 0 to -20 just as normal for several weeks at a time.
(the gas was turned a little lower than in summer)
This is my first winter without running gas for years.
A very strong battery & a Quality Jump Start booster ready just incase cranking fast enough is a problem.
Especially important to run the correct oil for low starting temps.
(i never, just used 20/50)
Engine tuned properly, timing set,
quality plugs & leads.
A good anti freeze ratio.
Keep the air filter dry. (possibly have 2 to swap about,
use one & then take it in to dry over night)
Everything kept clean & dry as possible under the bonnet when temps rise & you can get condensation.
george
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Nathaniel Difflock Royalty
Joined: 13 May 2003 Odometer: 17901 Location: North, North Yorkshire
1979 Suzuki LJ
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Posted: Thu Dec 09, 2010 10:08 pm Post subject:
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Kettle of boiling water over the vapouriser on a morning.
__________________________________ Nat
If You Open Your Mind Too Much Your Brain Will Fall Out |
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david p Guest
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Posted: Thu Dec 09, 2010 10:24 pm Post subject:
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ah thats good news ebay has served me well.
ive already replaced the coil, gone for lpg spec ht lead.
new dizzy cap and bocsh super 4 plugs to be fitted at the weekend.
The kettle trip has been used more than once this week
Battery is questionable, i have been eyeing up a twin battery system.
The viscous fan made me think to, the last thing the vapouriser needs is to be cooled by a great fan when your trying to keep it warm.
david p
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scut44 Guest
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Posted: Thu Dec 09, 2010 10:37 pm Post subject:
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When its around -10 or lower you learn rather quickly not to go around using boiling water, (anyplace other than in your drink)
well not if you intend using the vehicle often.
(warm possibly,
but if you are staying out in the very cold its a liability,
& boiled water freezes faster & very hard in my experience,
& i knows its said to be a myth that boiled water freezes differently from cold water)
george
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david p Guest
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Posted: Thu Dec 09, 2010 11:26 pm Post subject:
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Its a wonder someone hasnt come up with some form of vapouriser insultion jacket yet.
david p
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davew Articulating
Joined: 29 Sep 2006 Odometer: 938 Location: Knaresborough
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Posted: Thu Dec 09, 2010 11:36 pm Post subject:
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david p wrote: | Its a wonder someone hasnt come up with some form of vapouriser insultion jacket yet.
david p |
Insulation is the last thing the vapouriser needs, it's the LPG vapourising that cools the vapouriser as it turns from liquid to gas. That's why you need to run water through it to stop it freezing even on a hot day. Put an insulating jacket around it and all you'll do is keep the cold air in and stop it warming up.
__________________________________ Yorkshire Off Road Club
http://www.yorkshireoffroadclub.net/
OBC 2008
http://www.youtube.com/watch?v=1IgMB-s_ldY
http://www.youtube.com/watch?v=POWV-p8erY0 |
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Rossko Articulating
Joined: 23 Jan 2007 Odometer: 757
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Posted: Fri Dec 10, 2010 3:23 pm Post subject:
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Insulating jacket is a good idea, to keep off cold wind, and preserve what meagre heat you may be getting from the coolant flow.
The vaporiser would never work from heat exchange from air alone, it relies on the water flow. Even water at -10C will "warm" the vaporiser core enough to work, if you circulate enough of it.
Do not obstruct the vap's diaphragm breather hole with insulation. Do not pour water into the breather hole, either; it may freeze.
A mass of hot water can freeze faster than cold because of internal currents
http://en.wikipedia.org/wiki/Mpemba_effect
__________________________________ www.glass-uk.org |
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The Original Tom Guest
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Rossko Articulating
Joined: 23 Jan 2007 Odometer: 757
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Posted: Sat Jan 29, 2011 2:33 am Post subject:
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Unless you are looking for a sub -20C solution, it's much simpler just to give the vap some thermal mass to tide it over until the coolant warms up a bit. Simply, use a physically big vap and make sure it has a good water flow.
__________________________________ www.glass-uk.org |
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