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Discussion Starter · #1 ·
Anyone with a car older than 15 years or so likely has a coolant expansion tank with the structural integrity of wet toilet paper. These tanks rarely get aesthetic love in the factory vehicle design. They are usually plastic, look weird and can start cracking given enough time. After 20 years, the expansion tank in my 1995 Nissan 240SX project car will literally begin crumbling around your finger if any sort of pressure is applied. We don’t want that happening to your ST a decade or two from now, so we decided to design a sweet looking expansion tank that will outlast the car and be a nice addition to your engine bay.



There is a lot of focus (pun intended) devoted strictly to improving how the this EcoBoost hot-hatch platform performs. This is important, our engineers have had that as a clear goal in their minds with all of our product development for the ST. But how many products out there add a little bling to this application? Certain parts may not make you faster, but they can always look better.

Mishimoto cares about making you look good, so this project has moved fast. We have already begun making a 3D model of our tank design and had it 3D printed to test the fitment on our RS (it is a direct fit to both the ST and RS). To save time, we printed this entire assembly in pieces. You may have noticed a line in the middle of the tank, this is where the halves were epoxied together. The fill neck was also printed by itself, and had to be attached to the body of the tank separately. Remember, this isn’t a functional prototype, our engineers just wanted to be sure the design fit. See below.





Another cool thing we are doing with this tank is adding a sight tube. In past expansion tank projects, it hasn’t always been a feature that we could add due to how the design fit the vehicle application. We incorporated a sight tube here so you can tell how much fluid is in the tank without much trouble. There is also internal baffling that will prevent slosh.



Now that we know the prototype fits, it’s time to get a real, functional prototype into our facility. The good news is that we have a few on the way! I’ll leave you with what this prototype looks like on our shop RS. Just imagine whatever finish you think would work for your ride and you’ll pick up on the complimentary design we are going for!




Thanks for reading!
-Diamaan
 

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I dig it!


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I would rather have a black plastic cover with texture matching to the rest of the underhood bits, similar to the one for the newer 5.0s
 
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Good work! Prototype came out awesome! Cant wait to see what the final product will look like! :crazy:
 

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So...how long before we see more pics?
 

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That looks great!
 

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Discussion Starter · #15 ·
Looks badass!
Dope, Put me down for one.
Want. Yes please.

Sent from another garage.
I dig it!


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Very nice. I would definitely go for one as an upgrade. Now you need to design a matching washer fluid tank to go with it ☺
Good work! Prototype came out awesome! Cant wait to see what the final product will look like! :crazy:
Wow!! Thanks for the positive reception guys! The finished prototype will look awesome, and we're planning to offer you guys something special for this tank, so stay tuned.

I would rather have a black plastic cover with texture matching to the rest of the underhood bits, similar to the one for the newer 5.0s
Look out for our next update!

-Diamaan
 

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Discussion Starter · #16 ·

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Hell yeah!! Thanks for producing high end quality stuff! I may become a Mishimo-Ho LOL
 

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Look out for our next update!
-Diamaan
If you actually do a black plastic cover that matches the rest of the plastic underhood and have it reasonably priced, I would buy one.
 
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