>>28612750
Only one way to find out. Make sure it holds the same amount of coolant as your old tank though.

>>28612764
ok thank you i am struggling twin

File: 9a466217ad0fb2b5cb5b43b67(...).jpg (243 KB, 1333x2000)

243 KB JPG

>>28612750
Are you retarded?

>>28612750
Assuming the overflow tube Inside diameter matches, any overflow can work.
Hell, guys use old glass bottles as overflow tanks.

>>28612786
genuinely? yea kinda ive never had a car before and never had to help with a car as my parents did their stuff by themself and never explained anything

>>28612788
ohh okayyyy:0 tyyy!

>>28612811
Your coolant is stored in the radiator
The tank is just a reservoir for it to expand in.
Every site now that sells parts lets you input the yr/make/model and tell you right then and there if it will fit.
If your car isn't on there, jus measure the the dimensions of the one in your car right now and make sure the replacement one will fit.

It's not rocket science

>>28612821
ok thank you i just didnt wanna make a stupid mistake, rather ask stupid q now then suffer later

>>28612764
Lol, why would that matter?

>>28612750
What shape is the stock one? Is this one the same shape? Will it fit in the same spot? Are there holes to bolt it into? Does it have the same capacity?

imo you should just try and find the right part on a forum or ebay or something

>>28612788
this
it's just a pressure vessel
the main function is keeping spare coolant
the secondary function is to separate air from liquid
as long as it can hold a decent quantity of coolant, it's airtight under pressure, and you can hang it inside your engine compartment above the head of the engine, it will work

>>28613098
idiot

>>28613353
care to elaborate?

>>28613783
Nta, but overflow tank isn't pressured, you could safely pop it open even with the engine running. And also the 'above the head of the engine' part.

>>28612750
I think your biggest issue is going to be figuring out how to mount it. Pretty decent chance it won't just bolt straight up to the existing mounts.

>>28613795
but it does get pressurized if/when the coolant reaches boiling temperature (at 1atm), if it wasn't pressurized, the coolant could boil inside the engine, ruining the heat transfer
the part about keeping the tank above the engine is so that the air that may be present in the circuit gets trapped in the coolant reservoir tank instead of staying in the engine head or endlessly circulatingthrough the engine

>>28613818
no
that would be a coolant RESEVIOUR
a recovery tank simply is a catch for what comes out of a pressure relief

the pressurized system would have a blowoff valve that could just vent into the engine bay(messy and wasteful) or you can have a RECOVERY tank like what OP screenshotted that RECOVERS what would normally be lost

stop talking authoritatively on a subject you don't know about

>>28613854
aah sorry, my bad, my car only has the reservoir

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236 KB JPG

>>28612750
>ive never had a car before
>has a 1982 Alfa Romeo Spider
Based and retarded at the same time, I dig it. I don't know if it's OEM, but apparently this is what the fitment of a Spider's coolant tank looks like (compatible with GTV supposedly). There's others around, new, used and reproduction, but in general it looks like you can get one for under $100. Benefit of that one would be that you know it's all going to work with stock hoses and fittings, and look like it belongs under the hood.
Apparently all the S3 cars, that is up to 1990, used an overflow tank and not an expansion tank, that means there's no pressurization in that tank whatsoever to worry about, and tl;dr means you could rig up an empty bottle or something and it would work. This would be another story if it was a pressurized tank, but it's not.

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