russbost
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| posted on 21/5/08 at 07:01 PM |
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Running Methanol
I believe someone mentioned recently that you can buy methanol for around £80 for 205 litres, is this correct & if so where from?
Next, if you have an approx 6 litre old design of fuel injected engine (mechnical injection), was originally made to run on leaded fuel, has about 6:1
compression ratio, OHC with hemispherical crossflow combustion chambers & sodium cooled exhaust valves, will it run satisfactorily on methanol? I
know very little about methanol, other than I believe it delivers more power, but will use more fuel as it contains less energy per unit volume, would
you therefore need to inject more per cycle? Can you mix methanol with petrol, or can you add a lead additive to protect the valves as you would do if
using unleaded fuel - it would be an expensive engine to damage so it's pretty important not to get this wrong!
What knowledge do we collectively have on this???
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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britishtrident
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| posted on 21/5/08 at 07:12 PM |
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Was covered about 3 months back Methanol is very corrosive (not to mention poisonous), Ethanol less so.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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carlknight1982
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| posted on 21/5/08 at 07:34 PM |
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a friend of mine got seriously hurt when his motor backfired thru the carbs on meth, be careful with it
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twybrow
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| posted on 21/5/08 at 07:42 PM |
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From a quick google search:
Useful forum thread with discussion on timing/afr etc
Another useful page
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hellbent345
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| posted on 21/5/08 at 07:47 PM |
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as above methanol is very corrosive on almost everything in the engine, not recommended unless you are prepared to change seals etc takes a lot of
work to get an engine to run on pure methanol, but most engines will run fairly happily on a % mix of ethanol and petrol, i think the max is 15%
ethanol in petrol before you have to start thinking about changing seal materials etc
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paulf
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| posted on 21/5/08 at 08:22 PM |
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Methanol needs about twice as much fuel to air as petrol and as said is corrosive to alloys and also rubber but i think this is possible to
overcome.You can run much higher compression ratios with it though and would gain some economy back by upping the compression ratio.
It is available on Ebay as an additive for making bio diesel but is sold on the basis that it is used for bio diesel production and not as a fuel on
its own due to tax issues.You just need to convince them you are making bio diesel , maybe worth collecting it and paying cash to be on the safe
side.
E85 is ethanol and 15% petrol but costs as much as petrol even though the tax paid on it is much less.
Paul.
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tks
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| posted on 21/5/08 at 09:38 PM |
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its more powerfull because it burns much faster as petrol.
also you add more methanol to the same amount of air.
wiki is your friend...
Tks
The above comments are always meant to be from the above persons perspective.
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Hammerhead
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| posted on 22/5/08 at 09:27 AM |
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There is an article in this weeks autocar about the lotus exige that runs on petrol or methanol. They claim that only modest modifications were needed
and mostly to the ecu. Oh and it puts out 266 bhp on the toyota 1.8 engine 
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