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Coolant filter hose size

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Old Oct 8, 2012 | 09:29 AM
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Coolant filter hose size

I see the importance of running a coolant filter. But why are they all just 3/8 lines? Wouldn't it be more effective to run larger hoses and tap into a larger hose instead of heater hose to degas line. What I mean is tapping the heater hose into a larger filter and back into the heater hose or a fitting for the radiator hose , a T that goes from radiator size to say 5/8. Moving more coolant through the filter means more dirt removed from the system right? And with the smaller lines that means slower movement of coolant and more chance the debris will settle out or keep moving in the larger hose. What if you have a filter base with 5/8 ports run the 5/8 from the heater hose with a 5/8 T into the filter, filtered coolant than runs back to the degas bottle that you install a brass fitting through the plastic bottle for the return.. Ideas?
 
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Old Oct 8, 2012 | 09:55 AM
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There are a couple guys who did make their own just as you describe.

BLADE35 and Fal-308-Win

Give them a PM, I'm sure either one will help walk you through what they did.
 
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Old Oct 8, 2012 | 12:49 PM
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Remember, the coolant filter is a bypass filter. And only a bypass filter on the heater hoses, which themselves are a bypass. The theory of a bypass filter is that all of the coolant will eventually, and continuously, be filtered, but not on each pass. It just takes a little time, but impurities will be filtered out, and the bulk flow will never be reduced as the filter element gets clogged.

Also note, that the hole in the filter element itself is only about 5/32" in diameter. So 3/8" hoses are more than enough to handle all the flow that the element allows. Some guys do drill that 5/32" out a little. Not enough to exceed 3/8" hose capacity.
 
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