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Old 06-30-2009, 05:25 AM   #1
yeahbuddy661
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Question Help priming turbo

Hi, I have been searching the forums for a day and still a little confused on the proper way to do this. I will be injecting oil into the oil inlet before the turbo goes in but I would also like to take the precautionary steps as well.

What I dont understand is when you turn the ignition over a few times unless you step on the clutch the car wont fire anyway right? If thats wrong and you have to pull the fuel pump fuse, do you pull it then turn the key as far as it will go and hold it there for a few seconds or just turn the key over and take your hand off of it letting it sit for a few seconds.

Sorry but I have never done this before and just wanted to hear the correct way from those of you who have done this properly.

btw my cars an 08 wrx.
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Old 06-30-2009, 08:55 AM   #2
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it doesnt build oil pressure unless you turn the key all the way.
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Old 06-30-2009, 09:21 AM   #3
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I just fired the car up, immediately shut it off. Did this a few times, increasing the time its on by a couple more seconds each time.
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Old 06-30-2009, 09:35 AM   #4
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pull the ignition fuse. crank it st least FIVE times for 5 seconds. don't worry, you won't break anything. finally, put the ignition fuse back in and start the car. let idle for at least 5 minutes WITHOUT touching the gas pedal.

DO NOT start the car without priming the turbo. even for a split second, the exhaust gases can spin the turbo up fast enough to be harmful without proper lubrication.
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Old 06-30-2009, 09:44 AM   #5
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^ Definitely the best idea, but my turbo is in perfect condition doing it the way I did. If you damage your turbo doing it my way, then you picked a ****ty turbo anyway.
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Old 06-30-2009, 09:47 AM   #6
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There's a fuse you can pull out that takes power away from the ecu and fuel pump. I usually pull that as my starter kill and to prime both the motor and turbo.
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Old 06-30-2009, 10:37 AM   #7
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The oil pump is driven by the engine, which means it's not pumping oil unless the engine is turning. Just turning the key to "on" and leaving it will do nothing, the engine isn't spinning so the oil pump isn't pumping. You need to crank the car, but you need to pull some kind of fuse (be it ignition, fuel, doesn't really matter) to keep it from actually starting. Do NOT start the car before the turbo has been primed, that's probably the worst thing you can possibly do to a turbo.

I don't know what you mean about the car not starting if the clutch isn't in...sure the car won't start if you're not stepping on the clutch, but that's because the starter doesn't engage and the engine doesn't even turn. Engine not turning = oil pump not doing anything. The clutch must be in as if you're trying to start the car, but you need to keep the engine from actually starting.
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Old 06-30-2009, 01:33 PM   #8
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even better dude, if all you did was a straight turbo swap, (not a new motor or anything just swapped the turbo) you could just enter clear flood mode (by pressing gas peddle to the floor and cranking your motor over) to prime your turbo.
this way you get no combustion and you'll get oil in your turbo.

do this a few times for a handful of good cranks and you should be good to go
-GL
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Old 06-30-2009, 04:22 PM   #9
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Quote:
Originally Posted by 06mattsti View Post
I just fired the car up, immediately shut it off. Did this a few times, increasing the time its on by a couple more seconds each time.
Fail. The turbo spins at like 50k rpms when you start the engine.
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Old 06-30-2009, 04:24 PM   #10
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good catch jays... i was going to mention that as well...


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Old 06-30-2009, 07:33 PM   #11
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I always use my Accessport's Anti theft map..

it allows the car to crank and crank without firing over.

great way to prime turbos.. just like pulling a fuse for the fuel or spark..
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Old 06-30-2009, 08:15 PM   #12
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Thanks a lot all you guys had some good input I think I wll try Hollywoods method. Is it still a good idea to prime it by hand/oil inlet?
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Old 06-30-2009, 08:17 PM   #13
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Also if the ignition fuse is pulled doesnt that mean it would not fully prime when you press the clutch and turn over would it be better to pull the fuel pump fuse?
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Old 06-30-2009, 09:13 PM   #14
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The ignition fuse is the widely accepted method that a lot of people use.

Trust us, it works and it's easy.

Other people pull the coil packs, disconnect the fuel pump, hold down the gas pedal, etc...

As others said, as long as you've got a method where you can crank the engine without it starting, you'll be fine.
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Old 06-30-2009, 10:02 PM   #15
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Thanks, now to find the ign fuse.
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Old 07-01-2009, 12:33 AM   #16
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It's behind the coin tray, fuse #11. Tried to find a picture, but no luck.
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Old 07-01-2009, 01:19 AM   #17
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just pull the fuel control module before you install turbo and use all the pressured gas and prime the turbo
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Old 07-01-2009, 09:10 AM   #18
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Everybody is making this stupid hard when it is so amazingly easy. Simply pull the IGN fuse (#11 on my '05 STI). Crank the car as explained above. Pulling my IGN fuse not only cuts the ignition, but it also cuts the fuel (at least on my car).

No need for all of these elaborate ways to prime the turbo. Just pull the freaking fuse and be done with it.

t
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Old 07-01-2009, 09:16 AM   #19
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even thats stupidly hard. I think putting the gas pedal to the floor and starting the car (with no effect it just cranks over) is the easiest method.....its just like starting your car except with one extra foot involved.....

-GL
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Old 07-01-2009, 09:46 AM   #20
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Quote:
Originally Posted by GreenLantern View Post
even thats stupidly hard. I think putting the gas pedal to the floor and starting the car (with no effect it just cranks over) is the easiest method.....its just like starting your car except with one extra foot involved.....

-GL
Agreed. On DBW cars this is the easiest method.

Tony
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Old 07-01-2009, 10:27 AM   #21
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Quote:
Originally Posted by yeahbuddy661 View Post
Also if the ignition fuse is pulled doesnt that mean it would not fully prime when you press the clutch and turn over would it be better to pull the fuel pump fuse?
Whether it cuts fuel or ignition doesn't matter, you're just turning the engine. Turning the engine mean turning the oil pump, turning the oil pump means pumping oil through the turbo. It doesn't matter if the reason the engine isn't firing is because there's no ignition, or no fuel, or neither.
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Old 07-01-2009, 12:10 PM   #22
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Quote:
Originally Posted by GreenLantern View Post
even thats stupidly hard. I think putting the gas pedal to the floor and starting the car (with no effect it just cranks over) is the easiest method.....its just like starting your car except with one extra foot involved.....

-GL
I don't agree with this method. Why? Simply put, when priming a turbo you want to minimize the RPMs of the turbo. Putting your foot to the floor opens the throttle to maximum allowing a maximum amount of air through the motor, out the exhaust, and spinning the turbo. If you keep your foot off of the pedal then you get LESS air through the motor and less air spinning the turbo. IMHO, don't put your foot to the floor.

t
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Old 07-01-2009, 12:11 PM   #23
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Originally Posted by Turn in Concepts View Post
Agreed. On DBW cars this is the easiest method.

Tony
I disagree for the reason I specified above.

t
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Old 07-01-2009, 12:21 PM   #24
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I concur. I always pull the 30amp fuse.

I tried searching for a pic of the engine bay fuse box to point out which one it is but no bueno. Its the front-most 30 amp fuse when you're looking at the fusebox from the front of the car. I use this to reset the ecu and to prime my motor and whatever turbos I've installed in the past.

Quote:
Originally Posted by WolfPlayer View Post
I disagree for the reason I specified above.

t
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Old 07-01-2009, 12:32 PM   #25
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Quote:
Originally Posted by WolfPlayer View Post
Everybody is making this stupid hard when it is so amazingly easy. Simply pull the IGN fuse (#11 on my '05 STI). Crank the car as explained above. Pulling my IGN fuse not only cuts the ignition, but it also cuts the fuel (at least on my car).

No need for all of these elaborate ways to prime the turbo. Just pull the freaking fuse and be done with it.

t
Correct. Pull the fuse and prime the turbo. Just make sure the oil has reached the turbo and lines.
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