Billet Aluminum Coolant Reservoir Inlet/Outlet

[jdwertz]

Does anyone have a source for some billet aluminum inlet/outlet ports for a c900 coolant reservoir? I need two sizes, which I believe are 1/4" and 7/8".

I am sure folks with a lathe just make their own.

[DrewP]

There are off the shelf weld-on radiator "filler necks" that let you use off the shelf radiator caps, like these. I've used a few different ones before. Caps are available in higher pressures too.

http://www.summitracing.com/search/part ... er%20Necks

[jdwertz]

What psi is the c900 cap? something like 14 psi sound right?

I need the inlet/outlet ports as well for the radiator and waterpump hoses.

[Luke]

What psi is the c900 cap? something like 14 psi sound right?

I need the inlet/outlet ports as well for the radiator and waterpump hoses.

Like you said, I just use aluminum pipe (actual pipe not tube) which is turned on the lathe just to give a little shoulder.








Or you can get a pipe bung and use a threaded insert like this one for the smaller guy:

[DrewP]

Wow, I misread that.

There are probably spouts you can buy too, if you don't get a hookup from someone to turn you some.

[gmreider]

I really like the catch tank sight glass on Luke's Photo. Very nice little detail ! as I have said several times, there is a wealth of talented people on this site. I myself have not been too inspired lately.
I am bound and determined to learn the basics of T-5 ECU tuning and such. That is what is keeping me from getting my hill climb car just right. Lot's of potential , but just not tweaked right.

[jdwertz]

What is a good thickness for the aluminum? I have seen universal tanks up to .100" thickness.

[DrewP]

If you're making it yourself, thicker will be easy to make it leak-proof. It's actually kind of tricky to get the weld clean enough to seal liquid on thin aluminum. I would definitely not go thinner than .062". Even if it's .125" it won't weigh very much.

[Luke]

If you're making it yourself, thicker will be easy to make it leak-proof. It's actually kind of tricky to get the weld clean enough to seal liquid on thin aluminum. I would definitely not go thinner than .062". Even if it's .125" it won't weigh very much.

My go-to for tanks is 5052 or 3003 in .080". Both are great alloys. I really like 5052, it weathers well and is still easy to form. If it needs a lot of forming (like the end caps I make) I use 3003 in .063.


Another sorta cool thing I made that I'm not sure if I really ever showed anyone here was a tank for water injection on the rally car that utilized otherwise dead space on the 99. Just thought I'd throw this out as inspiration for projects, I always like seeing the way other people have come up with neat solutions for things.

[jdwertz]

One last question. Does the cap need to be "radiator style", where if over pressurized it lets out air? Or can I get away with a non vented cap? I know that the stock cap has a check valve that opens around 14 psi I think.

Great tips everyone thank you.

[Crazyswede]

Pressure relief cap

[Neil_G]

Hi Luke

What internal capacity did you end up with in the wing mounted water injection tank?

Regards
Neil