Originally Posted by Mchlgrrsn
I have heard spraying "pre blower" is not terribly effective in keeping IAT down. If I am wrong please tell me, I am up in the air on adding meth as well. I have IAT issues. Adding a larger heat exchange resivior as we speak to help.
Doing my build I did endless research on the different systems out there, and working with my builder, Cunningham Motorsports, who specializes in late model EFI performance cars, mainly Vettes. All the Vette guys LOVE using the ALKY Control kit. They have the lowest failure rate, Julio hand makes each kit specific to your application using only the BEST components out there; brass fittings, failsafe measures, the best pump made and all parts are made to be run with 100% Meth, so no worrying about erosion. These aren't windshield wiper solution kits & there's no cheap parts used. The last thing you want is some shitty parts failing and you're screwed!
Here's some basics of using the ALKY system to help out, it's a no lose situation (as long as it's installed correctly):
By injecting a fine mist of methanol directly into the engines incoming air charge has a substantial cooling effect. As the methanol injection mixes with the hot incoming air charge, it quickly converts from a liquid state to a gas state (steam). In doing so, it absorbs significant amounts of heat from the air charge. Depending on the build of the motor, whether naturally aspirated, supercharged or turbocharged; intercooled or non-intercooled, decreases in air charge temperatures will vary between 50-200+ degrees with cylinder temperatures dropping as much as 300 degree’s.
When combined with engines already out-fitted with air-to-air or air-to-water intercoolers, you will experience lower decreases (approx. 40-80+ degrees) in air charge temperatures due to the intercooler already removing a large portion of the heat from the air charge. While initial air temperature drops are not as significant as non-intercooled engines, lower overall air charge temperatures are achieved. Testing has shown that when combined with either air-to-air or air-to-water intercoolers on supercharged or turbocharged engines, nearly all the negative added heat from the supercharger or turbocharger can be removed.
When using pure methanol, greater decreases in air charge temperatures with higher increases in octane can be achieved.
Increase Horsepower Safely By Up To 10-15%
Most significantly, initial horsepower increases are due primarily to the significant reductions in air charge temperatures offered by methanol injection. Along with the initial cooler air charge temperature, comes a denser air charge. This creates a greater expansion of power within the cylinder, since pressure is directly proportional to temperature. The combustion process also turns the Meth droplets into a vapor which also helps to create a pressure raise (much in the same way as does a steam engine) and prevents the temperatures in the combustion from rushing to a sharp peak (as it does in a standard engine) and then dropping off. Instead, the combustion heat increases more slowly, reaching a lower peak temperature and descending more gradually. In addition, the longer overall combustion duration creates more pressure than does a standard engine’s cycle.
Due to the significantly cooler air charge temperatures, cooler cylinder temperatures and dramatic increase in octane offered by a methanol injection system; you can now safely run higher amounts of boost with more timing than ever before without it.
Plus one of the side effects of meth injection is the “steam cleaning” effect it has on combustion chambers, pistons and valves. With a methanol injection system you can help reduce and remove carbon deposit/build-up in your combustion chambers. This reduces the chances of developing carbon deposits in the combustion chamber, which can become heat soaked and lead to pre-ignition.
Since we installed the ALKY Control Meth system with direct spray into my CAI, Inc Intake Tube we've confirmed the following:
*Reduces air charge temperatures by 50-150+ degrees
*Reduces cylinder temperatures by up to 300+ degrees
*Increases 91-93 octane pump gas by 8-20+ points
*Allows me to safely run more boost and timing
*Longer more stable combustion expansion and progression
*Removes carbon build-up from combustion chambers, pistons and valves
*Reduces and helps eliminate engine damaging detonation and pre-ignition
Hope that helps clear things up for you.