Hello all, I was just wondering if it is proper procedure to drain the coolant from the radiator before doing the bypass modification? Thanks

 

that shouldn't be neccessary

 

No coolant should come out maybe just a little. Just take radiator cap off to relieve preesure incase there is any

 

I thought I would have too. Simply because the lines are below the top of the radiator fluid level so gravity would simply push the coolant out of the lines??? Or is it only when the engine is running that the coolant is circulating?

 

when I did mine I lost perhaps 3 cups of coolant in all. Just have a catch can at the ready or put some towles down.

 

Any other input appreciated

 

Coolant should come out at minimal because the thermostat is closed and coolant that spills is trapped in the manifold. Therefore the coolant will not start rushing out as thought because line is lower then radiator hose

 

my dad and i just did this mod two weeks ago and i barely lost any coolant at all like just a couple drops and caught them with a cap to a spray can

 

Thanks guys