EL NENE 7's - "EYE CANDY" --"The Road to 450HP"
#182
Thanks guys...well heres the set up that i am gonna be running in detail,
How to Build a Surge Tank
To convert some carbureted vehicles to EFI, we recommend fitting a fuel surge tank to avoid fuel feed problems, especially during hard cornering. This is also useful on many stock EFI cars which have poorly baffled tanks. The surge tank stores a small amount of fuel for the high pressure pump to pick up if flow from the main tank is interrupted for any reason.
Usually the tank is mounted in the engine compartment. Fuel is piped to it by either a stock engine driven mechanical pump or a low pressure electric pump. Often the stock electric pump can be used. A high pressure EFI pump will be mounted below the surge tank. The fuel gravity feeds into this pump and goes to the fuel rail. Fuel not used by the engine is returned from the rail, through the fuel pressure regulator, to the top of the surge tank. From here, if the surge tank is full, fuel is returned back to the main fuel tank. The schematic below shows a common setup:
Most tanks will have three fittings on the top, one for feed from the low pressure pump, one for fuel returned through the fuel pressure regulator and one for the return back to the main fuel tank. Usually only one fitting is used on the bottom of the tank for feeding the high pressure pump.
Tanks are usually about .5 to 1 liter in capacity, made from either steel or aluminum tubing. The tubing is usually 2.5 or 3 inch diameter and .050 to .075 wall thickness. A long tank allows any trapped air to rise to the top so it does not enter the high pressure pump. Threaded bosses are welded to the top and bottom caps or sides as in the example below. Usually 1/8 NPT or 1/4 NPT fittings are used but AN type fittings can also be used depending on your plumbing
How to Build a Surge Tank
To convert some carbureted vehicles to EFI, we recommend fitting a fuel surge tank to avoid fuel feed problems, especially during hard cornering. This is also useful on many stock EFI cars which have poorly baffled tanks. The surge tank stores a small amount of fuel for the high pressure pump to pick up if flow from the main tank is interrupted for any reason.
Usually the tank is mounted in the engine compartment. Fuel is piped to it by either a stock engine driven mechanical pump or a low pressure electric pump. Often the stock electric pump can be used. A high pressure EFI pump will be mounted below the surge tank. The fuel gravity feeds into this pump and goes to the fuel rail. Fuel not used by the engine is returned from the rail, through the fuel pressure regulator, to the top of the surge tank. From here, if the surge tank is full, fuel is returned back to the main fuel tank. The schematic below shows a common setup:
Most tanks will have three fittings on the top, one for feed from the low pressure pump, one for fuel returned through the fuel pressure regulator and one for the return back to the main fuel tank. Usually only one fitting is used on the bottom of the tank for feeding the high pressure pump.
Tanks are usually about .5 to 1 liter in capacity, made from either steel or aluminum tubing. The tubing is usually 2.5 or 3 inch diameter and .050 to .075 wall thickness. A long tank allows any trapped air to rise to the top so it does not enter the high pressure pump. Threaded bosses are welded to the top and bottom caps or sides as in the example below. Usually 1/8 NPT or 1/4 NPT fittings are used but AN type fittings can also be used depending on your plumbing
#183
SOMEONE ASKED ABOUT MY MANIFOLD well its a x02 fd manifold....these manifolds work great with a Dave aka guitarjunkie28 FD. No worries about getting cracks or rusted piping. The design is pretty straight through and good craftmanship went to this manifold some fd manifold need custom work in order for them to work.
Its also a divided manifold because my turbo is divided i want to have the max capacity of both my manifold and turbo hotside
#184
Engine, Not Motor
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FWIW, I have my Aeromotive pump mounted outside the tank and have not run into any fuel starvation problems until the tank gets very low (mostly a function of my pickup not totally reaching the bottom of the tank). I'm debating going to a surge-tank based design but can't decide where to actually mount it (it's ugly in the engine bay and there isn't really a good place underneath). Here's my setup:
#185
Thank you AARON
those of you viwing now understand how this set up should work or look...keep in mind there are various ways to do it, for example look at aaron cakes setup he got a custom made tank adapter plate with an/ fittings on them
thats just a safer way to prevent future leaks in that area, because people will use the barb fittings instead of doing it the right way
those of you viwing now understand how this set up should work or look...keep in mind there are various ways to do it, for example look at aaron cakes setup he got a custom made tank adapter plate with an/ fittings on them
thats just a safer way to prevent future leaks in that area, because people will use the barb fittings instead of doing it the right way
#187
Engine, Not Motor
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Originally Posted by 88rxn/a
so the walbro in the tank and Aeromotive on the feed line is how its done?
#188
Moderator
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just for inspiration, my surge tank setup could be seen here :
stock TII pump in tank and Bosch 044 pump in the pictures...
http://rx7cz.net/photos/workshop140/
stock TII pump in tank and Bosch 044 pump in the pictures...
http://rx7cz.net/photos/workshop140/
#189
Laying Down Rotary Law
nothing wrong with barbed fittings and push on hoses
they have special clamps for them too
I've had the other style come off on my oil lines
I now pay extra $$ for the aeroquip store(in front of the fairground) to crimp my hoses with there special
aluminum crimp fittings
they have special clamps for them too
I've had the other style come off on my oil lines
I now pay extra $$ for the aeroquip store(in front of the fairground) to crimp my hoses with there special
aluminum crimp fittings
Last edited by kabooski; 02-18-07 at 02:05 PM.
#190
Engine, Not Motor
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Originally Posted by hIGGI
just for inspiration, my surge tank setup could be seen here :
stock TII pump in tank and Bosch 044 pump in the pictures...
http://rx7cz.net/photos/workshop140/
stock TII pump in tank and Bosch 044 pump in the pictures...
http://rx7cz.net/photos/workshop140/
#194
Back in the game
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If you have a single exhaust couldn't you use the area where the other muffler would've went? I has no idea where else it would go other than the engine bay. Also, Without and pressure going through the main pump, you could possibly use a fuel cooler inline there, has anyone else done this?
#195
Saiga-12 Power!
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Originally Posted by TehMonkay
If you have a single exhaust couldn't you use the area where the other muffler would've went? I has no idea where else it would go other than the engine bay. Also, Without and pressure going through the main pump, you could possibly use a fuel cooler inline there, has anyone else done this?
*edit*
Wahoo 2000th post!
#197
Rotary Enthusiast
Originally Posted by Juiceh
I think that part of the whole point of a surge tank is to have a source closer to the engine to supply the fuel easier. Putting a surge tank where the other muffler was just doesn't seem to help.
The surge tank is to help generate a constant head of fuel to the pump. I cant see why it couldn't be used where the other muffler was (assuming its mounted higher then the pump)
Cool build El Nene 7!!
Tell me what paint did you use for the painting the engine, was a specific heat paint ???
cheers
-Anth
#198
spending too much money..
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Originally Posted by El Nene 7
Thanks guys...well heres the set up that i am gonna be running in detail,
How to Build a Surge Tank
To convert some carbureted vehicles to EFI, we recommend fitting a fuel surge tank to avoid fuel feed problems, especially during hard cornering. This is also useful on many stock EFI cars which have poorly baffled tanks. The surge tank stores a small amount of fuel for the high pressure pump to pick up if flow from the main tank is interrupted for any reason.
Usually the tank is mounted in the engine compartment. Fuel is piped to it by either a stock engine driven mechanical pump or a low pressure electric pump. Often the stock electric pump can be used. A high pressure EFI pump will be mounted below the surge tank. The fuel gravity feeds into this pump and goes to the fuel rail. Fuel not used by the engine is returned from the rail, through the fuel pressure regulator, to the top of the surge tank. From here, if the surge tank is full, fuel is returned back to the main fuel tank. The schematic below shows a common setup:
Most tanks will have three fittings on the top, one for feed from the low pressure pump, one for fuel returned through the fuel pressure regulator and one for the return back to the main fuel tank. Usually only one fitting is used on the bottom of the tank for feeding the high pressure pump.
Tanks are usually about .5 to 1 liter in capacity, made from either steel or aluminum tubing. The tubing is usually 2.5 or 3 inch diameter and .050 to .075 wall thickness. A long tank allows any trapped air to rise to the top so it does not enter the high pressure pump. Threaded bosses are welded to the top and bottom caps or sides as in the example below. Usually 1/8 NPT or 1/4 NPT fittings are used but AN type fittings can also be used depending on your plumbing
How to Build a Surge Tank
To convert some carbureted vehicles to EFI, we recommend fitting a fuel surge tank to avoid fuel feed problems, especially during hard cornering. This is also useful on many stock EFI cars which have poorly baffled tanks. The surge tank stores a small amount of fuel for the high pressure pump to pick up if flow from the main tank is interrupted for any reason.
Usually the tank is mounted in the engine compartment. Fuel is piped to it by either a stock engine driven mechanical pump or a low pressure electric pump. Often the stock electric pump can be used. A high pressure EFI pump will be mounted below the surge tank. The fuel gravity feeds into this pump and goes to the fuel rail. Fuel not used by the engine is returned from the rail, through the fuel pressure regulator, to the top of the surge tank. From here, if the surge tank is full, fuel is returned back to the main fuel tank. The schematic below shows a common setup:
Most tanks will have three fittings on the top, one for feed from the low pressure pump, one for fuel returned through the fuel pressure regulator and one for the return back to the main fuel tank. Usually only one fitting is used on the bottom of the tank for feeding the high pressure pump.
Tanks are usually about .5 to 1 liter in capacity, made from either steel or aluminum tubing. The tubing is usually 2.5 or 3 inch diameter and .050 to .075 wall thickness. A long tank allows any trapped air to rise to the top so it does not enter the high pressure pump. Threaded bosses are welded to the top and bottom caps or sides as in the example below. Usually 1/8 NPT or 1/4 NPT fittings are used but AN type fittings can also be used depending on your plumbing
#199
Engine, Not Motor
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Originally Posted by TehMonkay
If you have a single exhaust couldn't you use the area where the other muffler would've went? I has no idea where else it would go other than the engine bay. Also, Without and pressure going through the main pump, you could possibly use a fuel cooler inline there, has anyone else done this?
Interesting! I am thinking very hard about doing this. First thing is in the diagram I see one outlet on the bottom of the tank however in the picture of the actual surge tank I see two? What is the second one for? Also second thing is where do you get these suge tanks from? Thanks. Oh by the way your setup is bitchin'! I'll be posting my build up pretty soon and it includes a t70 and a hbp witch that turbo has been proven on a number of occations.
http://www.sdsefi.com/techsurge.htm
Surge tanks are available from most speed shops (Summit, TweakIT, etc.) or you can easily make your own if you have access to welding equipment.