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DIY - Relocate Overflow Tank

PostPosted: Thu Oct 14, 2010 3:40 am
by SLOW92CX
I have seen a few people do this.
I seared the forum and didnt find a DIY on this, so i decided to help out. :thumb:


Relocate Your Overflow Tank

start by taking your front bumper off. there are 5 screws on the top, and i had 1 on each side. there may also be a couple under the bumper, mine didnt have any.
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now in the engine bay, remove the snorkle pipe on the intake and pull out your overflow tank. i poured the fluid in a water bottle so i could just fill it back up when i was done.
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after the bumper is off you will see a big black box that is part of the intake system. remove the two 10mm screws that hold it on and then pull it strait down.
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go back to the engine bay and take off the two 10mm bolts that hold the over flow tank bracket on. remove the bracket. i drilled a 1/4" hole to attach the wire clip. thats optional, it was just an idea that poped in my head at the moment.
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you will need to bend the top of the bracket flat. DO NOT bend any other part of this bracket. i made the mistake of making the whole bracket flat, then realised that it needs to be bent to go around the overflow tank. took forever to bend it back out :x after you bend the top flat, cut about 1/4" off the top. basicaly just above the top hole.
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i did a lot of laying out and measuring so that i could put the tank in the best spot. but to make it easy for you, i took pictures :D
butt the top of the bracket up to the rolled down metal (as you can see in the first picture). then go 2" from the hole to the right, and 4" to the bottom. see pictures, its hard to explain. :lol: after you have the bracket in the right place, layout where the holes are. i drilled the holes with a 3/16 bit and then used a tap and die kit to thread the holes. i used the bolt that was origionaly on the bracket.
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after you have it on, it should look like this. the top hole was too hard to get at with my tap and die, so i only put one bolt on it. the one bolt holds it tight, but you can put another bolt on if you want.
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the bracket height has to be at this position. it can be lower, but not higher. you need a 1" clearance above the tank to allow enough room to take the tank on and off the bracket.
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after you have the bracket on, its time for a test fit.
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the tube will go up threw the big hole for the intake tube, or you can make your own hole. obviously you will need to get a longer tube. i had some blue urethane tubing laying around so i put some on there just for the pictures.
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and thats it. just put your front bumper back on and your all done. the tank is hidden and it dosnt hang down lower than your front bumper.
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this is my first DIY, so i hope i covered everying and everyone can easly understand what i did. but i can answer any and all questions. the whole process of doing this and taking pictures only took about an hour and a half. should be less for you since i gave you some measurements :thumb:

PostPosted: Thu Oct 14, 2010 4:16 am
by FunctionX
Hmmm.... thats pretty interesting. I think I'm gonna do this later on when I clean up my engine bay.

good DIY

PostPosted: Thu Oct 14, 2010 1:14 pm
by teal_dx
Here's how I did mine:
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I had to leave room for intercooler piping. I like yours better because no welding was required. Nice work :thumb:

PostPosted: Thu Oct 14, 2010 2:24 pm
by chilango41
Next project :wink:

PostPosted: Thu Oct 14, 2010 4:15 pm
by Method
what happens when you have to fill up the puke tank?

PostPosted: Thu Oct 14, 2010 4:30 pm
by chilango41
Fill it up through the intake tube hole :?

PostPosted: Thu Oct 14, 2010 5:08 pm
by teal_dx
I just fill through the radiator cap, engine cold of course :wink:

PostPosted: Thu Oct 14, 2010 5:31 pm
by MG6
will it be a bad idea to drill another hole on the over flow tank so a bigger tube can be used as a filler tube?

How effective is it to fill fluid through the radiator? Just wondering.

PostPosted: Thu Oct 14, 2010 6:36 pm
by SLOW92CX
Thats why i said to make sure you leave a 1" clearance above the tank. so you can just lift it off the bracket and take it out. its easily accessed threw your wheel well, or you can just reach up under your bumper. its a little inconvenient, but i think its worth it.
:thumb:

PostPosted: Thu Oct 14, 2010 6:52 pm
by teal_dx
MG6 wrote:How effective is it to fill fluid through the radiator? Just wondering.


It's all going to the same place. Filling through the overflow tank makes it safe to do when the engine is warm though. If your engine is not leaking/burning coolant, the only time you need to fill is when you flush the system... every couple/few years depending on your driving.

Unless you take your engine apart often or replace a component in the cooling system.

PostPosted: Thu Oct 14, 2010 8:52 pm
by {ikon}EM1
Good diy
Imma see if I can do this with my ek
:thumb:

PostPosted: Thu Oct 14, 2010 10:30 pm
by Datsmart
Something to think about...

Does a change like this effect the proper function of the coolant reservoir?
As the radiator cools after driving a negative pressure develops. This allows it to "top off" the radiator from the reservoir. Wouldn't dropping the reservoir that low effect its' ability to pull coolant back into the radiator?

PostPosted: Thu Oct 14, 2010 11:03 pm
by undeadone069
Datsmart wrote:Something to think about...

Does a change like this effect the proper function of the coolant reservoir?
As the radiator cools after driving a negative pressure develops. This allows it to "top off" the radiator from the reservoir. Wouldn't dropping the reservoir that low effect its' ability to pull coolant back into the radiator?
was thinking this too. it would make since. seams like it would be harder to top off the radiator.

PostPosted: Fri Oct 15, 2010 1:18 am
by teal_dx
I'm not sure... since the tube on the inside of the overflow tank lid goes down to the bottom of the tank, it's still going to suck up fluid as long as there is a vacuum. Having a longer tube to suck through shouldn't have any noticeable effect on the function of the tank.

PostPosted: Fri Oct 15, 2010 3:32 am
by SLOW92CX
I have not drove my eg around to notice any difference with the tank being lower. but teal has had his like that longer, and if he says he hasnt had any problems with it, then thats good enough for me. lol