Direct port methanol injection

[kicknurass4fun]

Couldnt find a thread on this and just curious as to how many of you out there have tried it? I know its a little bit more complex for slight gains, but i like the idea of knowing all cylinders are getting the same amount of meth. Any way just curious to hear from anyone that has done it and opinoins on it? I should have my setup all together some time next week i will post pics when its done.

 

[Spades]

You sure there will be enough length to give it time to vaporize?

 

[kicknurass4fun]

That is probably the main concern I had with this setup. When I thought about it the fuel injectors are even closer and fuel must vaporize to burn too, so i figure it must be ok. Plus the combustion chambers are so hot im sure the meth would atomize imediatly once it enters. I might be wrong about the whole vaporizing thing its just my thoughts. Any one else have some input?

 

[Mr Peepers]

Equal distribution(not as critical as fuel or no2) and the response will be a plus. The only thing I'm curious about is if you want it to absorb heat/vaporize directly in the cylinder, or absorb heat/vaporize in the intake manifold.

http://www.dsmtuners.com/wiki/index.php/WaterInjection

I skimmed the article but couldn't find any info if direct port was better than TB injection. It does say multiple nozzles will get better atomization, but nothing about direct port. I'm sure DSM-onster would know

 

[dsm-onster]

. . .Sorry for bringing this not-new thread up.

If you want a cool aircharge and just inject water, then you need the nozzles somewhere close to the intercooler. Water absorbs GOBS more heat than alcohol or fuel. But because of the strength of surface tension exhibited by water, the droplet size in the spray results in a very low surface area to actually absorb the aircharge heat. . . Compared to alcohols. In other words, water CAN absorb vastly more heat than alcohol, but alcohol does it at a faster rate. Water needs more time suspended to get that heat out of the aircharge.

But I would rather do what you are doing: direct port injection. Why? because, I'll just mix alcohol in the water to get the cool aircharge since the rate of heat absorbtion is so much greater. I'd rather have the water in the combustion chamber with less heat absorbed. Water WILL vaporize nearly instantly in the combustion chamber once ignition begins. The instantaneos conversion to steem allows the amount of heat that water CAN absorb to be fully realized VERY quickly. This slows the burn rate down to race gas octane rates. No detonation.

So wiper fluid mix gives me plenty of aircharge heat absorbtion. And the water raises the effective octane. Having direct port injection insures that all the cylinders get a fair chance.