D
Duckhunt
Guest
So i guess I got "too much time on my hands" again, as all my peers with kids tell me time and time again. I am in the process of hooking up an Attwood 4" 1749-4 "bilge blower" on the snorkel side of my air box. Just for kicks and fun!
On that note... This will not be forced induction for anyone with wild ideas on a $30 turbo. Hence the supercharger in quotes in the title. You cannot create boost with a fan. This IS simply a fan, and a fan moves air, does not force induction or create pressure like an air pump or compressor (like a turbocharger or supercharger). However, what it could do is help flow, or natural aspiration. Through my engine tinkering I have definitely realized how little these 500 heads flow. The last time I had my head off, I opened up the exhaust and intake ports and really polished the exhaust port and combustion chamber. It gave it noticeable gains and my PC-V fuel map is a little richer, so I know it's moving more air.
Doing the math with 561 CC, at 7200 rpm, that is 72 cfm airflow at 100% volumetric efficiency. So if this 235 cfm "fan" is even 35% accurate to spec, I should have less vacuum. Again not boost, but less vacuum. I did order a vacuum gauge but won't be here till Monday. I am also keeping my snorkel setup intact in case this is a worthless laughable test.
On that note... This will not be forced induction for anyone with wild ideas on a $30 turbo. Hence the supercharger in quotes in the title. You cannot create boost with a fan. This IS simply a fan, and a fan moves air, does not force induction or create pressure like an air pump or compressor (like a turbocharger or supercharger). However, what it could do is help flow, or natural aspiration. Through my engine tinkering I have definitely realized how little these 500 heads flow. The last time I had my head off, I opened up the exhaust and intake ports and really polished the exhaust port and combustion chamber. It gave it noticeable gains and my PC-V fuel map is a little richer, so I know it's moving more air.
Doing the math with 561 CC, at 7200 rpm, that is 72 cfm airflow at 100% volumetric efficiency. So if this 235 cfm "fan" is even 35% accurate to spec, I should have less vacuum. Again not boost, but less vacuum. I did order a vacuum gauge but won't be here till Monday. I am also keeping my snorkel setup intact in case this is a worthless laughable test.
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