Is this possible? If I go to an aftermarket Radiator I'd like to delete the overflow.. Or even now I'd like to delete it. Trying to take some weight off the car and clean up the engine compartment.

Maybe I can use some sort of aluminum catch can for the overflow.. a Small one as to not add weight.

Ideas?? Thanx..

 

The stock overflow is made of plastic and honestly doesn't weight much as it is. You can replace it with an aftermarket can but you wont save any weight... or atleast nothing more than a few ounces probably.

You can delete it all together and just run a tube from the rad to the bottom of the car. If you overheat or push anything out it just dumps on the ground. Which is not the greatest idea for the enviorment either.

 

You wont save much weight and you need an overflow. When the car is warm it will go to the overflow, then when its cold it sucks it back up. If theres nothing there then it will suck air into the system.
Air isnt very good at cooling a engine, so guess what happens next.

 

Really bad idea.

If you delete the overflow, do not take your car to the track - a catch can is required. Will not pass tech, and if it does sneak through, you will cause problems with a slippery track, putting others in danger.

As pointed out in the post above, the reservoir is there so the radiator can "breathe". The radiator should always be full, with no air pockets. If you are running Dex-Cool, it seems to cause serious problems with sludge if it is exposed to air. And, the system can't build the pressure required to suppress boiling if there is air in the system.

As the coolant heats up, it expands, and it has to escape via the spring loaded valve in the cap. That goes into the reservoir. When you shut the engine down, and the coolant contracts as it cools, the vacuum created in the radiator pulls the replacement coolant out of the reservoir.

 

^There you go......

 

Bayer, were you having a brain fart???

 

^ YEah.. All good points folks.. THanx for the help.. I'll leave it..

I've actually gotten DUMBER since I quit drinking.. It wasn't by choice, I'm just not interested anymore. Guess I'm just maturing in my late 20's..

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Don't worry, information retention only gets harder as you age. The 'wiser' part of getting older is knowing where to get more accurate information

But if you have or intend to move your battery you could save a little weight by going to a stand alone bottle. Still won't counter the extra weight of relo. cables though.