Reservoir delete

Splinter · Post by **Splinter** » Fri Feb 03, 2006 7:44 am

So Im thinking about just removing the coolant reservoir, since Im running a N/A radiator (which has a fillcap), what'd be the best way to go about this?

Splinter · Post by **Splinter** » Fri Feb 03, 2006 8:18 am

How about this:

The 1/2" line that goes in the bottom and comes out the back I replace with a single line that goes from the pump to the turbo, and I connect the overflow tank to the nipple on the fill cap on the new rad

Thats all?

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 3:18 pm

Yep, pretty much. Except -- the throttle body coolant return also goes in the pipe between the pump and the filler tank.

I would say to just replace the filler tank with a 1/2" hose barb elbow. It'll connect the two big hoses together in their stock configuration.

In fact, this may be a good opportunity to install a coolant temperature gauge. Get a pipe tee and put barbs on two legs and thread a temperature sender in the third, and stick it where the tank used to be. That's what I did.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 7:36 pm

vrg3 wrote:Yep, pretty much. Except -- the throttle body coolant return also goes in the pipe between the pump and the filler tank.

Could you explain this a little more? I dont think I know exactly what Im supposed to do about that.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 7:45 pm

Check out this diagram of most of the external cooling system:

http://www.graphics.cornell.edu/~v/pics ... ooling.png

See how the pipe going between the pump and the filler tank has that extra little upward-pointing nipple on it? So you can't just remove that pipe and replace it with hose. georryan pointed that out to me a short while ago.

So just leave the stock hoses and pipes in place.

Wait... actually, that's not quite what I did. I replaced the hose going from the tank to the turbo with a straight piece of 1/2" heater hose. Then the elbow fit perfectly.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 7:50 pm

Is the pipe with the extra nipple one solid piece that attaches to the filler tank? It doesnt look like it from the diagram, it looks like there is a short formed hose that clamps onto the pipe with the extra nipple and connects to the tank.

If thats the case, I can just remove that formed pipe and run a 1/2" hose straight from that to the turbo, can't I?

I'd like to avoid using couplers whereever possible. IMO the less connectors, the better.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 7:53 pm

That pipe attaches to a small hose that goes to the throttle body's water jacket.

Stick a temperature sensor in the coupler and it's well-justified.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 7:54 pm

If you can run 1/2" hose from the end of the formed pipe all the way to the turbo without kinking it or putting it somewhere where it'll get abraded, that'll work too.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 8:06 pm

Dont have cash for a gauge right now.

Ive got about 5' of 1/2" heater hose and a few dozen feet of 3/16 and 5/16 fuel line kicking around which is the only reason why Im doing this, I cant afford to spend anything on the car which is absolutely necessary after my recent splurges (optima, alternator, hella 550's, IC+gauge)

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 8:17 pm

Well, you can try running the hose straight from the turbo's upper cooling line down to the end of the formed pipe, but I think you're better off just getting a 1/2" barb elbow and using the existing hose coming off the pipe.

Wait -- your filler tank isn't broken? Why would you want to eliminate the convection current turbo cooldown dealie?

Splinter · Post by **Splinter** » Fri Feb 03, 2006 8:22 pm

Ive got the N/A radiator with its own fillcap, and huge mess in the engine compartment, an intercooler mashed against the reservoir just itching to break off nipples

Its either relocate or remove...

Remove is easier and prettier.

On the other hand... I didnt really think too much about the convection cooling process. I suppose its fairly important now that Im running higher boost.D

Damnit.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 8:31 pm

It's not important if you can remember not to shut the engine off right after boosting.

I'm not even running coolant lines at all to my TD05-16G.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 9:22 pm

How long should you idle for to cool the turbo down after spirited driving?

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 9:25 pm

Depends on how spirited. Anywhere from a minute to ten minutes, I guess...

It's not that big a concern most of the time; it's pretty rare that you go from driving very hard to shutting the engine off without a short period of driving gently along side streets and whatnot. The only common situation where you do is when you stop for fuel during a road trip.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 9:30 pm

Im rarely on boost for more than a few moments

Hard uphill grinds, accelerations into traffic, launches from traffic lights

Generally speaking, im never on boost for more than about 10 seconds.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 9:35 pm

Right. So if you consciously take care to make sure you don't shut the turbo down hot -- and you already almost never do -- you should be okay.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 9:40 pm

Reservoir comes out tonight then.

ty.

vrg3 · Post by **vrg3** » Fri Feb 03, 2006 9:41 pm

BAC5.2 · Post by **BAC5.2** » Fri Feb 03, 2006 10:04 pm

I can't wait until I can only be on boost for 10-seconds.

Splinter · Post by **Splinter** » Fri Feb 03, 2006 10:05 pm

Well considering 10 seconds gets you to 70-80mph from a standstill, I dont really see when Id be on it for longer than that.

Splinter · Post by **Splinter** » Sun Feb 19, 2006 8:19 am

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