This can be done on either a 1g or 2g, I'm sure. I did this mod on my 91 TSi AWD.
I have an aluminum radiator (have had it a while now) and have only been running the main fan (passengers side). Since I did my Supra sidemount and intercooler piping, the air filter was moved more toward the front of the car, so my stock overflow tank wouldn't fit in it's usual spot.
I moved the stock tank over to the right side of the fan, ziptied it there until I could think of something better. Well, that was a bad idea, as it flew off while I was driving. So I bought a stainless steel overflow tank. This will guide you through the mounting procedure and hookup.
First off, here is what the coolant tank looks like. The one I bought is 15" long and has a 2" diameter. Holts 1.5 pints or fluid. At the bottom, there are 2 nipples. The coolant hose to the thermostat housing is the shorter of the two. The longer one is the discharge/overflow. It extends almost all the way to the top of the tank.
(Sorry, picture is upside down)
So let's go out to the car and see where we can put the coolant tank. There are 2 holes at the top of the radiator to hold the stock A/C fan on. So let's just see if it will fit over on the hole farthest to the right.
The tank fits...it is a little bit taller than the radiator itself with the cap on, but it clears the hood just fine. The bottom of the tank rests against the "lip" on the bottom endtank of the radiator. It's as if the tank were made to go here.
To mount it, I decided to make a bracket out of aluminum bar. I went down to Ace Hardware and picked up a 3 or 4 foot long piece of aluminum. It's a good width and thickness, works very well. (I don't remember the exact dimensions but if you want them just PM me).
You have to bend the bottom of the aluminum so it can rest on the subframe. Mark the holes where they are on the overflow tank and the mounting hole at the top and go drill away.
Now that you have the holes drilled, cut the metal down to length. I cut it about an inch or so above the top hole (that will mount to the radiator). After you have it cut to length, bolt the coolant tank to the newly made bracket.
(Again, sorry this is upside down...I was taking pictures with my phone and they look correct on their...)
Now you're going to bolt it up to the radiator itself. Once you have that done, you have to drill a hole in the subframe. After I drilled the hole, I used a sheet metal screw (1 inch length) to secure the bracket to the subframe.
I ran into a small problem once everything was bolted up. The tank was too close to the radiator and the cap would not come off of the tank...it hit the radiator. I solved this by adding 2 shims behind the top bolt connected to the radiator.
Now just run your coolant line from the bottom of the tank to the thermostat housing and voila, you have a badass looking bling under your hood.
I have an aluminum radiator (have had it a while now) and have only been running the main fan (passengers side). Since I did my Supra sidemount and intercooler piping, the air filter was moved more toward the front of the car, so my stock overflow tank wouldn't fit in it's usual spot.
I moved the stock tank over to the right side of the fan, ziptied it there until I could think of something better. Well, that was a bad idea, as it flew off while I was driving. So I bought a stainless steel overflow tank. This will guide you through the mounting procedure and hookup.
First off, here is what the coolant tank looks like. The one I bought is 15" long and has a 2" diameter. Holts 1.5 pints or fluid. At the bottom, there are 2 nipples. The coolant hose to the thermostat housing is the shorter of the two. The longer one is the discharge/overflow. It extends almost all the way to the top of the tank.
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(Sorry, picture is upside down)
You must be logged in to view this image or video.
So let's go out to the car and see where we can put the coolant tank. There are 2 holes at the top of the radiator to hold the stock A/C fan on. So let's just see if it will fit over on the hole farthest to the right.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
The tank fits...it is a little bit taller than the radiator itself with the cap on, but it clears the hood just fine. The bottom of the tank rests against the "lip" on the bottom endtank of the radiator. It's as if the tank were made to go here.
To mount it, I decided to make a bracket out of aluminum bar. I went down to Ace Hardware and picked up a 3 or 4 foot long piece of aluminum. It's a good width and thickness, works very well. (I don't remember the exact dimensions but if you want them just PM me).
You have to bend the bottom of the aluminum so it can rest on the subframe. Mark the holes where they are on the overflow tank and the mounting hole at the top and go drill away.
You must be logged in to view this image or video.
Now that you have the holes drilled, cut the metal down to length. I cut it about an inch or so above the top hole (that will mount to the radiator). After you have it cut to length, bolt the coolant tank to the newly made bracket.
You must be logged in to view this image or video.
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(Again, sorry this is upside down...I was taking pictures with my phone and they look correct on their...)
Now you're going to bolt it up to the radiator itself. Once you have that done, you have to drill a hole in the subframe. After I drilled the hole, I used a sheet metal screw (1 inch length) to secure the bracket to the subframe.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
I ran into a small problem once everything was bolted up. The tank was too close to the radiator and the cap would not come off of the tank...it hit the radiator. I solved this by adding 2 shims behind the top bolt connected to the radiator.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
Now just run your coolant line from the bottom of the tank to the thermostat housing and voila, you have a badass looking bling under your hood.
