Stock LQ4 water pump with dual pass rad
#1
Staging Lane
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Stock LQ4 water pump with dual pass rad
I would like to convert my rad to dual pass to clean up the hose routing in my nova. In my research I have found out that it takes more pressure to pump through a dual pass because the coolant is confined to a smaller path. my concern is that the stock pump will have to work too hard and its life will be shortened. also since I will be modding the radiator my self by swapping the intake to the right side and putting a plate in the center of the right tank the flow will be less efficient than it would be in a unit designed to be dual pass. Any thoghts on this would be greatly appreciated.
Thanks
Thanks
#2
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Modifying the radiator seems ambitious, could you find another with the inlet on the other side?
I think the load on the pump itself and the power would be negligible, maybe 3.5 horsepower rather than 3 horsepower?
just my .02
I think the load on the pump itself and the power would be negligible, maybe 3.5 horsepower rather than 3 horsepower?
just my .02
#3
Staging Lane
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I cant afford another rad right now but I think I can find someone to tig my old one for me plus I like doing things the hard way.
Does anyone have a dual pass on their swap?
Does anyone have a dual pass on their swap?
#4
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We use dual passes on most swaps, it always makes for a cleaner installation and better cooling. I'm gonna say it would be simpler to just buy one also though, a couple hundred bucks will get you one and you dont have to spend the labor time (or money) and you can sell off your existing radiator.
#5
Staging Lane
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thanks for the replies, now that I think about you guys are right it its probly best to stick it out till I get some extra money and drop in a new one when I can.
MeanYellowZ do you use the stock pump on your swaps?
MeanYellowZ do you use the stock pump on your swaps?
#7
You are worrying about nothing. Water pumps live just fine pumping against a closed thermostat on a cold engine. That is way more restriction than any radiator ever will cause.
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I am using a 31x19 dual pass radiator on my 79 Malibu swap. Haven't had the engine and radiator in at the same time, but it fits pretty snug in there. I think you would be much better off getting a new rad vs modifying one.