SnowTech.2
Joined: 14 Oct 2005 Posts: 366
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Posted: Fri Apr 06, 2007 11:09 am Post subject: TT3: Running 100% Methanol |
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We hear various opinions on the subject on "if it is safe to run 100% methanol with Boost Cooler Systems". There will always be opinions but here are the facts related to the most common questions we get on this subject.
Q: Can I run 100% pure straight M100 methanol in my system?
A: YES
Q: Will 100% methanol damage my Boost Cooler system?
A: NO
Q: Should I run 100% methanol in my system?
A: NO
Q: Why Not?
A: SAFTEY
Q: Please explain....
A: OK
Methanol has a boiling point of 148F (65C). What happens when a liquid boils? It changes from liquid state to vapor. If there is enough vapor present it can be ignited with a spark, open flame, or spontaneously combustion if it is hot enough. Now, what is the temperature in the typical automotive engine bay? Well because of SAE specs I design all our electronics for 221F (105C). But on an average hot day the typical engine bay temps might be in the range of 150F to 185F. So see the issue?
This would be a good point to note that if methanol is burning the flame is nearly invisible.
Ok, so the autoignition temperature of 100% methanol is 851F (455C) that is well above engine bay temps so no worries right? .
Wrong.
What was the temp reading on your EGT gauge last time you looked 800F, 1000F,....1600F? (note if you see 1600 while using a Boost Cooler call our tech line as something is not right)
So in short running 100% methanol in your engine bay you risk the chance of an invisible fire while refilling your methanol tank after that last 1/4 mile pass.
Q: Ok so I will install my Tank, pump and 100% methanol in the trunk.
A: Good idea, also would be safer to vent the tank to external of the vehicle. Use a SFI rated fuel cell or tank and proper venting install to prevent any fumes from accumulating in passenger area of the vehicle.
Q: So the only reason Snow does not recommend 100% methanol is just because of safety?
A: Well safety is a good reason, but at 100% methanol you are basically running a dual fuel engine. There are many benefits to mixing water with methanol besides safety. Injected in the right quantity water increases the detonation resistance of the air fuel charge (or octane rating if you want) and has a steam effect on the power stroke of the engine cycle leading to more torque. (Same principle that Steam engines were designed around)
Our research and testing has shown that a 50/50 mix of water and methanol produces the best combination of intake cooling and detonation control.
Any more questions let me know.
Best regards,
Dan
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