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Hey I never doubted ya on the fan! I remember a thread about those videos a few years back. And you’re absolutely right spinning that mega-cfm fan is gonna take some power! But the video compared their lightweight low-cfm fan to the big one - total BS. Of course their fan takes less power! It’s...

Hey I wasn’t looking for a fight just conversation. I really appreciate everyone’s input because it makes me think about things specific to my build that ya’ll don’t know and I can ponder on possible solutions and write some off or put some in motion. That’s why we’re all here. I just don’t...

I don’t think the water can flow so fast that it won’t cool off because the same would hold true to the engine - it wouldn’t heat the water because it’s flowing too fast. Both the engine and radiator are submerged in water. It’s getting hot and cooling off no matter what. Unless there is...

My engine is far from high performance lol. My static compression is less than 9:1 and I run E85. Maybe that’s why it likes the timing there. I don’t think I have a cavitation problem - my pump may be larger but it’s also underdriven and my lower hose isn’t sucking shut.

Thank you - I’m off to a good start since I have most of the items on list. I need the big fan with clutch. I don’t care how much power I lose I need to spend that HP on airflow. The exhaust is restricted by the turbo but after that it’s a 3” pipe to a muffler and exits in front of rear tires...

I will check out a stock fan and see if it improves. I need to be flowing the most air I can. My timing is 15ish - Highest vacuum possible at idle

I can see light through it and my radiator cap is 16lbs. Never blown a head gasket. My radiator is just a little small for the engine I think. I also run a thermostat.

I see what you mean. Forward speed overcomes the fan. My fan sits 1” from the radiator. I know that a fan or propeller works by reducing the air pressure in front of it and atmosphere then flows from high to low. So without a shroud it will still drop pressure from the surrounding area. I’m also...

I was going to add electric fans in conjunction with my mechanical fan and get a smaller water pump pulley or change my crank pulley setup.

Does a HD flex fan not move a lot of air at idle? It looks to have a lot of pitch. My issue isn’t so much at speed as when at idle. The shroud is tight against the fan blades, about 1/2” clearance. With the turbo and a 3200 stall, I’m alsways running around 2500-5000 rpm, lower than NA engines...

I agree - up the pump/fan combo speed. I do have a high efficiency water pump so I imagine it’s about a normal amount of flow being undsrdriven. The fan is about 3/4” from the rad and the shroud encases the entire fan.

Ideally I’d like to water cool my wastegate as well so I need all the tricks at hand. I agree guys - get my fan speed up. I can’t locate a smaller pulley in aftermarket. I’ll have to get one designed or hack one up. That and get a full size electric fan(s) up front. I don’t have an...

hey friends been getting a little hot lately with warm temps and I need to optimize my cooling system. I have a unique system and need help finding some parts. Build is a turbo 318 magnum w/ 904 in a duster running e85. It will stay cool under boost but if it comes to a sudden stop and idles...

Have a 73 Duster that has a/c, just not hooked up. I picked up the car and it didn't have a heater motor, just a blockoff plate - weird. So I'm looking for a motor online but nothing looks like it would fit the car. Any suggestions? Here's what I'm working with: