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Old 10-27-2012, 07:39 PM   #1
cbazq271
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Default replacing oem turbo

Hi, I just replaced my turbo on my 05 sti with a oem replacement. My question is, do I have to do anything to prep the turbo after I bolt it on, before I start the car. Like do I need to pour a little oil into the turbo, through the oil free hole , so the turbos not starting dry? Thanks, Chad
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Old 10-27-2012, 07:48 PM   #2
424wrx
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ive read to floor the throttle or pull the fuel pump relay while cranking. when i swapped mine for a vf52 3 years ago, i just squirted oil into the top oil feed on the turbo. then just let it idle a while and checked for leaks. also clamp off your coolant lines and then you wont need to drain the coolant. it worked for me.
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Old 10-27-2012, 10:25 PM   #3
HinshawWRX
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You need to prime the turbo. I wouldn't "floor it" but instead, disconnect the fuel pump relay in the pass. side kick panel, crank the motor a good couple of times, then reconnect and start it.
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Old 10-27-2012, 10:41 PM   #4
cbazq271
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Quote:
Originally Posted by HinshawWRX View Post
You need to prime the turbo. I wouldn't "floor it" but instead, disconnect the fuel pump relay in the pass. side kick panel, crank the motor a good couple of times, then reconnect and start it.
Thanks, I will do this. Do you think also putting some oil in the turbo before starting is a good idea, or is it not needed.
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Old 10-27-2012, 11:00 PM   #5
the suicidal eggroll
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Quote:
Originally Posted by HinshawWRX View Post
You need to prime the turbo. I wouldn't "floor it" but instead, disconnect the fuel pump relay in the pass. side kick panel, crank the motor a good couple of times, then reconnect and start it.
"flooring it", despite the implication, will cut fuel in the DBW models during cranking. It's a quick and easy way to turn over the engine without starting or having to pull any fuses or relays. It's better than pulling the fuel pump relay IMO since the injectors won't even fire.

I've done it myself, it works.

Here's the Cranking IPW Throttle compensation on the 05 STi:


Anything over 90% throttle cuts fuel entirely during cranking.

Last edited by the suicidal eggroll; 10-27-2012 at 11:15 PM.
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Old 10-27-2012, 11:14 PM   #6
the suicidal eggroll
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Anyway, pull the fuse/relay or floor it, doesn't matter. Put some oil in the feed to the turbo, spin it by hand to get a little bit running through the bearings, do whatever you want to do to keep it from starting and crank the engine for 10+ seconds at least 3 times to get the oil flowing through the turbo, then start it up and let it idle for a while, and continue on with the rest of the break in procedure.
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Old 10-28-2012, 12:23 AM   #7
ProfessWRX
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Quote:
Originally Posted by the suicidal eggroll

"flooring it", despite the implication, will cut fuel in the DBW models during cranking. It's a quick and easy way to turn over the engine without starting or having to pull any fuses or relays. It's better than pulling the fuel pump relay IMO since the injectors won't even fire.

I've done it myself, it works.

Here's the Cranking IPW Throttle compensation on the 05 STi:

Anything over 90% throttle cuts fuel entirely during cranking.
That is cool. My 06 wrx has the same table/values. Good to know.
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Old 10-28-2012, 10:39 AM   #8
424wrx
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Quote:
Originally Posted by the suicidal eggroll View Post
"flooring it", despite the implication, will cut fuel in the DBW models during cranking. It's a quick and easy way to turn over the engine without starting or having to pull any fuses or relays. It's better than pulling the fuel pump relay IMO since the injectors won't even fire.

I've done it myself, it works.

Here's the Cranking IPW Throttle compensation on the 05 STi:


Anything over 90% throttle cuts fuel entirely during cranking.
this is what i was implying. no need to pull any fuses or relays.i just primed mine like i said and reinstalled the top oil line. started the car and done. that was 3 years ago so i guess i didnt damaged the journal bearing.
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Old 10-29-2012, 08:47 AM   #9
cbazq271
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I have my old turbo off and the new one on. does anyone have a idea of how much my old turbo is worth. The only reason I replaced it, was I know theres 150,000 miles on it and wanted to change it just to be on the safe side. It was working fine and build great boost. I don't know have to really check a turbo, but I tried to wiggle the rotors on both sides of the turbo and they feel nice and solid. would like to sell it for some money, rather then just throughing it away.
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Old 10-29-2012, 11:33 AM   #10
sc00ter
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With that mileage, if there is minimal shaft play you could probably get $150-$250 out of it.
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Old 10-29-2012, 01:40 PM   #11
cbazq271
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Ok, well then the first $100 takes it. I will list in the for sale section.
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