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Old 10-04-2001, 04:46 AM   #1
WRXwannbe
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Location: Long Beach, CA, USA
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Default Need help idetifying parts

What are these?

what is that top pipe for the turbo water cooling go to?
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Last edited by WRXwannbe; 10-04-2001 at 04:53 AM.
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Old 10-04-2001, 08:12 AM   #2
blaster88
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Blackish

Default

The one on the left is the fill reservoir for engine coolant. The radiator on the turbos does not have a radiator cap. That hose that you are pointing at goes to the radiator.

Dunno about the bottle on the right.
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Old 10-04-2001, 10:31 AM   #3
MZM
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Impreza 93 STI

Default Idle air

Item on the right is the electric control for the idle air valve. The part you see on top connects to the ECU and power line. The body it activates is a machanical piece that opens and closes on ECU command depending on water temp, throttle position and its initial setting.

I hope this helps.

MM
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Old 10-04-2001, 11:16 AM   #4
WRXwannbe
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Excellent,

Will any of those idle throttle sensors work? I've got one off my 2.2 liter NA that I want to swap.

AS for the turbo res. There is that top one, then there is one right below it. Do both go into the radiator?
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Old 10-04-2001, 12:19 PM   #5
MZM
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Hi WW

I think the throttle sensors are identical, either JDM or the US model. Look on the backside of the sensor for the part number. My recollection is they are both the same, ending in "25". No promises here, YMMV.

The fill reservoir is dual purpose. Obviously, it is used to fill the radiator and is designed to be the highest point in the cooling system. Secondly, it is an expansion tank for the turbo. After you turn off the engine, the turbo will still be HOT, and create steam. This steam flows into the expansion tank (fill resevior) and pulls along some cooling water into the turbo. Similar to the radiator reservoir concept.

To allow this fluid movement, the reservoir is connected to the water pump as well as the previously described inlet/outlets. The lower hose you ask about goes to the radiator. Blasters reply was a good answer, but more precisely the smaller hose (top) goes to the overflow tank.

In summary, this fill tank had four inlet/outlets, to the water pump, turbo, radiator, and overflow tank.

In case you are wandering how I know all this trivia, I have installed an inported Liberty engine in a MY93 Impreza. Still in the tuning stage, but a fun project. Luck.

MM
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Old 10-05-2001, 01:00 AM   #6
WRXwannbe
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mzm, blaster88

thanx for the info.

MZM,

I have a 2.2 liter NA right now in my car. Could I use the computer to power all basic engine managment? such as idle, starting?

also, have you experimented with higher boost?

Also have you notice any extra tappet sound?

It's supposed to be a characteristic of this engine

Last edited by WRXwannbe; 10-05-2001 at 01:29 AM.
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Old 10-05-2001, 01:40 AM   #7
MZM
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Default ECU

""I have a 2.2 liter NA right now in my car. Could I use the computer to power all basic engine managment? such as idle, starting? ""

Probably. I am using a MY93 Legacy Turbo ECU. Not easy because you need a new wiring harness. I know WRXGirl is using the original 1.8L ECU. A much simplified choice, but you need some piggy back aids.

""also, have you experimented with higher boost?""

Yes. Ran 12 PSI for a few days with cautious driving metered by a Dawes MBC. EGT never got to high. But I lost my nerve and returned to stock solenoid controlled boost. That is 8 PSI, but the turbo is old or something because gauge rarely shows more than 7 or 7.5 PSI full boost. The 12 PSI setting will light your hair on fire. Puts you back in the seat in 4th at 60 mph.

I need more controls before it goes up again. BTW, the turbo ECU has a 6800 rpm ignition cut.

When are you going to install the motor?

MM
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Old 10-05-2001, 01:54 AM   #8
WRXwannbe
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I'm in the process of dismantling everything right now.

I've taken off:

AC compressor (will not use)
power steering pump (will not use)
Alternator (will not use)

Intake manifold (wthl all attached goodies eg. injectors)
Turbo (maybe for sale, upgrade to VF-22, or rebuild)


The intake valves are very black and have a nice coating of carbon on them.

Is this normal? I have grease everywhere in the intake manifold and it's driving me crazy.

I want to hand the heads and block over to someone who would just spend their time cleaning every passage free of soot.

one thing I like about the motor is that it's closed deck. With some new pistons, rods, and valve the engine can easily handle 400hp.

Last edited by WRXwannbe; 10-05-2001 at 01:59 AM.
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Old 10-05-2001, 10:16 AM   #9
MZM
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Default Grease!

WW

Quote:
Is this normal? I have grease everywhere in the intake manifold and it's driving me crazy.
HaHe! Crazy is just beginning. But think of how much fun you are having.

MM
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Old 10-05-2001, 12:34 PM   #10
WRXwannbe
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damn,

How do you clean it out?
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Old 10-05-2001, 09:18 PM   #11
Scoobie Steve
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Default Cleaning Engine

Try using Castrol Superclean, it cuts carbon and burnt on oil very well.
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