Feeler: Group buy for a custom expansion tank

Discussion pertaining to positive pressure E28s.
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M. Holtmeier
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Joined: Mar 11, 2007 3:06 AM
Location: Dallas, Texas

Feeler: Group buy for a custom expansion tank

Post by M. Holtmeier »

I had a custom expansion tank made that doubles as a strut bar. The shop that made it did an excellent job putting it together. The build quality is top notch. I thought I'd offer up the possibility of having a small batch of these made for those looking for an alternative to the stock plastic tank and/or to free up some space in the engine bay.
The Strut-Tank Expansion-Bar, or "STEB," allows for stock m30 coolant line connections. I know a lot of people here could probably make their own, but I figured what the heck- we already have all the data for the machine work and tested one out already.
Pricing these is still in question. I wanted to get the feeler out to gauge interest. It's not going to be a cheap part, but it all depends on demand and what I can work out with the fabricator and his machinist.
Let me know what you guys think. If it's a bust, no big deal- just looking to provide the community with neat stuff when I can.
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marc79euro645
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Joined: Dec 08, 2008 11:33 PM

Re: Feeler: Group buy for a custom expansion tank

Post by marc79euro645 »

Nice! I already have a strut bar, so I have the mounting rings. Would they do just the tank/bar? I'd love to simplify the engine compartment. Any problems with oil filler access?
Kyle in NO
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Re: Feeler: Group buy for a custom expansion tank

Post by Kyle in NO »

This is the most legit item I saw at the Vintage event. Hell...In recent memory.
TurboE28
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Re: Feeler: Group buy for a custom expansion tank

Post by TurboE28 »

That's one bad mother right there! Nice!!
Nebraska_e28
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Re: Feeler: Group buy for a custom expansion tank

Post by Nebraska_e28 »

Does this include the strut tower plates? I'm in for one, possibly 2. This would be the perfect solution for upcoming changes with my build.
M. Holtmeier
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Location: Dallas, Texas

Re: Feeler: Group buy for a custom expansion tank

Post by M. Holtmeier »

marc79euro645 wrote:Nice! I already have a strut bar, so I have the mounting rings. Would they do just the tank/bar? I'd love to simplify the engine compartment. Any problems with oil filler access?
As long as the rings are aluminum, he can do it. You will need a long funnel to fill oil- no change from my last strut bar though.
George
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Re: Feeler: Group buy for a custom expansion tank

Post by George »

Pretty fucking cool Mike. Any worrying about this cracking from traditional stress on the towers? Hown does theveryone volume compare to the stock tank?
M. Holtmeier
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Location: Dallas, Texas

Re: Feeler: Group buy for a custom expansion tank

Post by M. Holtmeier »

This holds right at a liter of coolant. I don't know what a stock tank holds at the full mark. The idea to go this route came from my engineer friend when I wanted to hang a tank from the strut bar. The bar ends are machined inserts welded in to carry the load. The pipe diameter, thickness and the use of a billet rad neck is enough to offset to hole in the pipe to add coolant.
Shadow
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Re: Feeler: Group buy for a custom expansion tank

Post by Shadow »

What in the!?!? Very strange. i'd do it but don't have a e28.
George
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Re: Feeler: Group buy for a custom expansion tank

Post by George »

Count me in. I like it.
mooseheadm5
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Re: Feeler: Group buy for a custom expansion tank

Post by mooseheadm5 »

M. Holtmeier wrote:This holds right at a liter of coolant.
Literacoolant? Do we have literacoolant?
M. Holtmeier
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Re: Feeler: Group buy for a custom expansion tank

Post by M. Holtmeier »

mooseheadm5 wrote:
M. Holtmeier wrote:This holds right at a liter of coolant.
Literacoolant? Do we have literacoolant?
:laugh:

Ok, the PMs are coming in for a price. If we could a group buy of 10 I could do better.

As it stands, these would be $750 shipped in the CONUS.
tschultz
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Re: Feeler: Group buy for a custom expansion tank

Post by tschultz »

Very cool solution!

Unfortunately too pricey and not necessary for my current setup. I think the flipped throttle body people should consider this! The tank will always be above the engine which will help the system to bleed out air bubbles automatically.
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