300k miles and a GT2554R
06-08-2018, 11:17 AM
#2
Welcome to the forum. Seems like you know what you are doing. Look forward to the build progress. Also 21psi on a sled is insane. I have a 14 RMK Assault that i ran 7 psi last year at 200hp and 12psi this year at 260hp and i premix 100:1 100LL from the airport. Cool to have people that snowmobile on here too
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06-08-2018, 11:47 AM
#4
Im lucky. The ridding here is awesome. From seattle i can be in the mountains in roughly an hour then from the truck maybe 15 min to great ridding in the steep and deep in the trees. And then we have Mt. Baker that is awesome. Havent been to Revy or Whistler with the sled yet but hopefully i can next year.
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06-11-2018, 09:21 AM
#10
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Yep.
Aside from the obvious problem discussed for decades regarding the erosion of compressor wheels by ingesting water droplets, there are specific issues relating to the changes in temperature when dealing with intercooled systems.
The compressor wheel creates heat as it compresses the air thereby promoting the evaporation of the water droplets. This then yields very hot, very moist, compressed air. The intercooler's job is to then cool this damp air by 50 to 100 degrees. You don't have to be a meteorologist to know what happens when hot damp air from the bathroom shower makes contact with the cool mirror. Between the contraction of the air molecules as they cool and the contact with the cooler surfaces on the interior of the intercooler much of the moisture changes back from Vapor to liquid and remains within the intercooler. After a brief period of time in boost it is possible to end up with significant puddling of water within the lower portions of the intercooler.
So yeah, puddles.
This is why most water injection systems are installed with nozzles placed post intercooler.
Aside from the obvious problem discussed for decades regarding the erosion of compressor wheels by ingesting water droplets, there are specific issues relating to the changes in temperature when dealing with intercooled systems.
The compressor wheel creates heat as it compresses the air thereby promoting the evaporation of the water droplets. This then yields very hot, very moist, compressed air. The intercooler's job is to then cool this damp air by 50 to 100 degrees. You don't have to be a meteorologist to know what happens when hot damp air from the bathroom shower makes contact with the cool mirror. Between the contraction of the air molecules as they cool and the contact with the cooler surfaces on the interior of the intercooler much of the moisture changes back from Vapor to liquid and remains within the intercooler. After a brief period of time in boost it is possible to end up with significant puddling of water within the lower portions of the intercooler.
So yeah, puddles.
This is why most water injection systems are installed with nozzles placed post intercooler.
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