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Old 06-17-2010, 08:27 PM   #1
kmurphy
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Member#: 163257
Join Date: Nov 2007
Chapter/Region: BAIC
Location: roseville,ca
Vehicle:
2006 sti
obp

Default Full stainless surgetank E85 ready.

Everything on this tank is stainless. Since nobody makes off the shelf AN bungs I had my machinist make me some in stainless. All bungs welded from the inside and mounted flush for a nice clean install. No worries about e85 eating away at the aluminum. Top 3 bungs are -6 while the feed is -8.


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Old 06-17-2010, 09:45 PM   #2
eg33GC
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Join Date: Mar 2009
Chapter/Region: MWSOC
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99 V4
EJ20K RS

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beautiful piece
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Old 06-18-2010, 11:50 AM   #3
Bob the fabricator
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Location: Pleasant Valley, CT
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Nice job. Nice to see a proper tall cylindrical 'swirl pot' design that actually swirls the fuel and de-aerates it. I've never understood using a short, rectangular box as a surge tank.
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Old 06-18-2010, 09:52 PM   #4
YZ86
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Location: Detroit,MI & Windsor,Canada
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GD Widebody STI
Lexus Pearl White

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Looks Great Man!!
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Old 06-19-2010, 01:24 AM   #5
piddster
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Member#: 144285
Join Date: Mar 2007
Location: Twin Cities, MN
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1993 UHEV Legacy

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Quote:
Originally Posted by Bob the fabricator View Post
Nice job. Nice to see a proper tall cylindrical 'swirl pot' design that actually swirls the fuel and de-aerates it. I've never understood using a short, rectangular box as a surge tank.
I don't see how the fuel is going to swirl given the ports are perpendicular to the tangent of the cylinder. Also, how does spinning fuel help air rise to the top of the tank? The rising speed of a bubble is proportional to its size and the viscosity of the liquid. I don't understand how centripetal acceleration on air in a fluid is going to help it rise faster, unless your surge tank is an inverted cone.



Port placement should have a decent effect on keeping air and warm fuel away from the feed, even if it is a rectangular box. Considering the actual flow rate of fuel and its viscosity, air should have plenty of time to stay away from the outlet given proper port placement.
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Old 06-20-2010, 04:20 PM   #6
Wintershredder
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Member#: 160089
Join Date: Sep 2007
Chapter/Region: RMIC
Location: Denver
Vehicle:
2004 STi,330xi,328xi
WRB, Black, White

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Cant wait for this bad boy to come in the mail! Thanks Kelly
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Old 06-21-2010, 12:21 PM   #7
Bob the fabricator
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Quote:
Originally Posted by piddster View Post
I don't see how the fuel is going to swirl given the ports are perpendicular to the tangent of the cylinder. Also, how does spinning fuel help air rise to the top of the tank? The rising speed of a bubble is proportional to its size and the viscosity of the liquid. I don't understand how centripetal acceleration on air in a fluid is going to help it rise faster, unless your surge tank is an inverted cone.
You are correct, I thought at first the ports were introduced at an angle, but looking at the pics again I see that they are in fact perpendicular.

Regarding the ability to de-aerate: Typically I install a baffle inside to help this out, but I've also seen that when the inlets are installed at an angle to induce a swirl within the container, and the outlet at the bottom is also welded in at an angle (however 90 off from the inlets), the heaver fuel stays at the perimeter of the tank, allowing ONLY fuel to be drawn into the secondary pump. The air will stay at the center of the tank, and eventually rise to the top.

Bob
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Old 06-21-2010, 02:13 PM   #8
CKxx
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Chapter/Region: Tri-State
Location: PA
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Your BOV sounds lame
93 RX7+09 Forester

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Vibrant makes off-the-shelf SS bungs.
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Old 06-21-2010, 02:33 PM   #9
Bariga
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Chapter/Region: NWIC
Location: Renton, WA
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07 STi Limited
EFR 7670 TS

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kelly can you give me a call or some kind of update, im ****ing tired of this bull****
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Old 06-21-2010, 04:12 PM   #10
piddster
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1993 UHEV Legacy

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Quote:
Originally Posted by Bob the fabricator View Post
Regarding the ability to de-aerate: Typically I install a baffle inside to help this out, but I've also seen that when the inlets are installed at an angle to induce a swirl within the container, and the outlet at the bottom is also welded in at an angle (however 90 off from the inlets), the heaver fuel stays at the perimeter of the tank, allowing ONLY fuel to be drawn into the secondary pump. The air will stay at the center of the tank, and eventually rise to the top.

Bob

Makes sense now. I'll keep it in mind for the next tank I make.
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Old 06-22-2010, 01:51 PM   #11
nosmo
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06' STI,02WRX,982.5
www.Flat4lv.com

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Real sweet looking setup.
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