View Full Version : Water Methanol Injection
Foozrcool
24-02-2009, 01:27 PM
Just after some recommendations for a good water/methanol setup & how much I should expect to pay?
I've been looking at the Boost Cooler but the Aust agents won't return calls or emails. There are some on Ebay from the US but wondering if there are any other good local ones I could use.
Foozrcool
24-02-2009, 10:00 PM
Can't believe no one here uses water injection with their Sprintex.
Oh well I ended up buying a Coolingmist Trunk Mounted Progressive system tonight online from the US as they had a clearence sellout which made it about the same cost as a under bonnet kit with a tiny tank. Pity the exchange rate is pretty ordinary atm :rant:
T_double_U
24-02-2009, 10:04 PM
aquamist is one of the best systems out there.
Foozrcool
24-02-2009, 10:06 PM
Yeah but they should be gold plated to justify the price they ask.
T_double_U
24-02-2009, 10:09 PM
$1100 isn't to bad for the level of development that goes into them
Foozrcool
24-02-2009, 10:13 PM
I know they are regarded as the best, if I was running a 30PSI boosted turbo setup I would spend the money but for 6.5PSI on a Sprintex you would have to have rocks in your head. I could probably have got away with a basic on/off kit triggered by boost but I liked the idea of a variable controller & especially the larger boot mounted tank. No room under the bonnet was also a deciding factor.
T_double_U
24-02-2009, 10:18 PM
true,as long as the brand has a decent rep it should be all good
wookiee
25-02-2009, 08:43 AM
I've got a Snow Performance Boost Cooler sitting in my garage. I haven't put it on yet. waiting for the smaller pulley (T minus 2 weeks!) and some time to get it tuned.
I think all up I paid about $700 for the kit.
Foozrcool
25-02-2009, 04:59 PM
Did you get it locally through Full Throttle? I couldn't get them to respond to me so gave up. Was looking at them on ebay but came across the Coolingmist at a good price.
I could be wrong but from my research Snow Performance, Coolingmist & Devils Own seem very similar specs & price wise with Aquamist being the premium model but at a premium price.
wookiee
26-02-2009, 09:47 AM
yeah, it was through Full Throttle. one of my mates put me in touch with the guy. he was a little hard to get a hold of, but for the price it was worth a little hassle.
on a side note, I just picked up my 55mm pulley wheel. can't wait to have a play with it!
Alan J
26-02-2009, 02:33 PM
The Aquamist is a mapped system. A good cheap alternative is to use a fuel injector/s controlled by an ECU out of an early V6/V8 Commodore or Camira with Delco 808 computer. Many dyno operators have software to map the Delco ECU. That way you get the right volume of water mapped for engine rpm and load, boost and intake temp.
Leave out the methanol, it wrecks the cylinders and rings with corrosion. Better to use ethanol/water, straight water or straight toluol.
Cheers, Alan
Leave out the methanol, it wrecks the cylinders and rings with corrosion. Better to use ethanol/water, straight water or straight toluol.
Strange.
I have talked to quite a few drag car boys who use a water/methanol mix - they have never had any issues with it destroying cylinders and rings, or anything else with corrosion.....
NORBY
26-02-2009, 03:31 PM
Strange.
I have talked to quite a few drag car boys who use a water/methanol mix - they have never had any issues with it destroying cylinders and rings, or anything else with corrosion.....
maybe because they dont sue it as a daily thing?
i dunno just a suggestion
Could possibly be it....not sure, just the first time I've heard of methanol being damaging to engines.
Alan J
02-03-2009, 07:01 AM
Yes you are on the money liverpool_rule_88. Methanol does nasy things to daily drivers. In comp engines the normal routine is to flush the system by running the engine on petrol for a few seconds, pull the plugs and drop oil down the cylinders and then crank the engine.
Way back when Chev made the turbo Corvair they added water inj with an anti-freeze/anti corrosion additive. This was expensive so many just used water/metho and ran into big corrosion problems. This hurt Chev badly with warranty recalls and basically killed the turbo Corvair.
What most don't realise is that nowadays metho is generally ethanol so often its not methanol thats being used anyway.
Really there is no need to add anything to the water. In Formula 1 turbo era and World Rally methanol was never added, just distilled water. That was first done to stop the water freezing. Water inj was originally used on fighter planes remember. In our Aust climate at sea level freezing is not an issue.
Some like the idea of adding some sort of "fuel" as water doesn't burn. However the reason for water inj is that the latent heat of evaporation (2260 J/g) drags a huge amount of heat out of the combustion chamber and stops detonation. By comparison methanol pulls less than half as much heat (985 J/k) so you have to inject a lot more to get the same internal cooling effect. For comparison ethanol is 855 J/g, toluol 351 J/g and petrol 282 J/g.
What is often not known is that when fuel economy is important in a methanol fueled race engine and you have to tune lean, then water is added to the methanol to stop detonation, generally about 10% and not more than 15%.
Cheers, Alan
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