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Old 02-10-2011, 03:51 PM   #1
Black07STiGuy
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Default How do you properly prime a new turbo?

Hello fellow suby peeps!

I would like to know how everyone primes their new turbo prior to going out and driving after install. I'm replacing my VF40 with a VF48 and I wanna make sure that when the install is done that its properly primed and all fluids are running their proper course. So any input would be awesome. Turbo should be here tonight so I will be checking this until the install.
Cheers!
-Chris-
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Old 02-10-2011, 04:23 PM   #2
Feign
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Do everything else.
...
Remove fuel pump relay.
Crank for five seconds.
Replace fuel pump relay.

It will likely try and fire on the first attempt. Either relieve the pressure in the lines beforehand or shut it off right after it tries to fire. Don't let the thing idle.

Last edited by Feign; 02-10-2011 at 04:31 PM.
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Old 02-10-2011, 09:11 PM   #3
Black07STiGuy
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sweet thanks, now where is the fuel pump relay? lol
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Old 02-10-2011, 09:44 PM   #4
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Either in the fusebox under the hood or in the passenger side kick panel
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Old 02-10-2011, 10:07 PM   #5
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thanks much, well ups failed me today so looks like i will be doing it tomorrow.
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Old 02-10-2011, 10:17 PM   #6
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Maybe it is so obvious and taken for granted no one is saying it... but when I changed my turbo I made sure it was full of oil to begin with. I filled it with oil before I put it on, and I refilled it before putting the fittings on... THEN I primed it by cranking the unpowered engine.

Oil filters are filled before installation for the same reason.
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Old 02-10-2011, 11:01 PM   #7
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^^^^ I do the same thing, I use a plastic generic condiment bottle with oil in it.

Did you go front mount?
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Old 02-10-2011, 11:54 PM   #8
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Quote:
Originally Posted by theotherguy View Post
^^^^ I do the same thing, I use a plastic generic condiment bottle with oil in it.

Did you go front mount?
yes I did go with a fmic. and a 48. But thanks for all the help tho. I did help someone recently make a big tmic using your outline.

OK so pull the fuel pump fuse, fill turbo prior to installing the oil feed banjo bolt. Any other pointers?
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Old 02-11-2011, 12:03 AM   #9
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or you can disconnect the crank angle sensor.
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Old 02-11-2011, 12:04 AM   #10
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or you can disconnect the crank angle sensor.
can you dumb it down a bit for me? lol
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Old 02-11-2011, 12:42 AM   #11
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Quote:
Originally Posted by Black07STiGuy View Post
can you dumb it down a bit for me? lol
right above your crank pulley is a sensor and plug. disconnect the plug. your car will then crank and not fire up.

from personal experience I have never prefilled the turbo with oil and never had any issues. the exhaust pressure coming from just the engine being spun by the starter is not enough to lock up a turbo do to lack of oil IMO. once you start cranking/priming, oil does however start to cover the internals of the turbo. I pesonally will crank it twice for 10 seconds each and then reconnect the crank angle sensor and then fire up the car. again never had any issues
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Old 02-11-2011, 12:57 AM   #12
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Thanks guys.
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Old 02-11-2011, 01:00 AM   #13
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Here...
Borrowed from meatbawl...



Prefilling is just a little insurance, everyone does it different...
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Old 02-11-2011, 01:21 AM   #14
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I have never heard of putting oil in your oil filter after replacing it? I have also never seen this done. I see how you could do this on our subarus, but lets say were looking at a toyota, the filter on a tacoma is mounted facing up.
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Old 02-11-2011, 02:07 AM   #15
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I always fill my new filter after replacing the old one. On cars where the filter isn't mounted horozontally, I just fill it halfway or so and spin it on as quick as I can.

as far as the turbo goes, you can also pull the IGN fuse under the dash and it will turn over but not start. I crank until the oil pressure warning light goes away, let it rest a little bit for the starter to cool down, then crank it a little more.
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Old 02-11-2011, 08:14 AM   #16
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Quote:
Originally Posted by 4080wrx View Post
right above your crank pulley is a sensor and plug. disconnect the plug. your car will then crank and not fire up.

from personal experience I have never prefilled the turbo with oil and never had any issues. the exhaust pressure coming from just the engine being spun by the starter is not enough to lock up a turbo do to lack of oil IMO. once you start cranking/priming, oil does however start to cover the internals of the turbo. I pesonally will crank it twice for 10 seconds each and then reconnect the crank angle sensor and then fire up the car. again never had any issues
this. you guys are overthinking the priming. squirt a little oil in the top oil feed opening on the turbo itself. connect the line to the turbo. start the car. done. did this when i did my vf52 swap and everything is good.
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Old 02-11-2011, 12:16 PM   #17
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Don't bother pulling any fuses, you don't need to go through ANY of that hassle.

Floor the gas pedal, and crank for 10-20 seconds (in bursts of 10 sec), then start the car. At WOT the ECU will cut all fuel while cranking, no need to pull a single fuse.
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Old 02-11-2011, 07:55 PM   #18
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im installing a vf43 tomorrow and was going to use a baister or whatever you call it and squirt oil in the turbo before putting the banjo on. will that be good enough?
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Old 02-11-2011, 08:16 PM   #19
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Quote:
Originally Posted by spec_bg View Post
im installing a vf43 tomorrow and was going to use a baister or whatever you call it and squirt oil in the turbo before putting the banjo on. will that be good enough?
i used a plastic ketchup bottle from the dollar store. squirt some in the top and spin the turbine some. the flooring the gaspedal technuique as mentioned below is the easiest way to get the oil flowing after the install.
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Old 02-12-2011, 06:35 PM   #20
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keep us updated on the install. the vf48 is gonna feel real nice compared to the vf40.
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Old 02-13-2011, 12:26 PM   #21
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Quote:
Originally Posted by the suicidal eggroll View Post
Don't bother pulling any fuses, you don't need to go through ANY of that hassle.

Floor the gas pedal, and crank for 10-20 seconds (in bursts of 10 sec), then start the car. At WOT the ECU will cut all fuel while cranking, no need to pull a single fuse.
Even after a decade and several cars, you learn something new everyday, thanks. I'm gonna have to try that with hydra too.
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Old 12-02-2019, 01:42 PM   #22
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Thanks for that eggroll.
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