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Underbody braces, turbos and more!

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 Post subject: oil feeding
PostPosted: Sat Jun 09, 2012 1:36 pm 
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Location: lake stevens, wa
One of the only things I can't find much information on is oil feed for turbos. I know that shoving as much oil as possible isn't good. So how much oil should go through it and how is a good way to regulate it? It's a td03L.

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00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Sat Jun 09, 2012 4:27 pm 
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a simple solution for limiting oil flow to a turbo is to use an orifice in the supply line.

fill the fitting on the upstream connector of the supply hose with silver solder and drill a small hole through it. at 55 psi (the pressure at which the relief valve on the oil pump operates) a 1/16th to 1/8th inch hole is probably about right to keep from over oiling the turbo.

consider whether the turbo is water cooled or just oil cooled to determine oil flow. i'd only use the orifice on a water cooled turbo housing.

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1991 Blue Geo Metro Convertible highly modified 1.0L Turbo3 5 spd. - 1991 Red Geo Metro Convertible customized with a Twincam 5 spd.

My Turbo3 Project
My Cardomain Page -Ol' Blue
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 Post subject: Re: oil feeding
PostPosted: Sat Jun 09, 2012 4:58 pm 
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Location: lake stevens, wa
It is indeed water cooled.

Does it have to be silver solder? If so could you explain why please?

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GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Sat Jun 09, 2012 5:54 pm 
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Location: Rivendell
So the way I did it was to create a grub screw and drill a hole through it with a 40 thou drill.
The grub screw was screwed into the end of the fitting I got to thread into the oil gallery hole on the side of the block.
I created a grub screw by:
tapping a thread into the internal of the fitting
finding a bolt to match the thread
drilling the hole down through the centre of the bolt
filing a slot across the end
cutting the bolt to size
installing into the internal of the oil gallery fitting.

voila
no silver solder

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Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.HP is how fast you hit the wall, torque is how much you push the wall out.


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 Post subject: Re: oil feeding
PostPosted: Sat Jun 09, 2012 6:34 pm 
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From what I've read only ball bearing turbos require a restrictor. I'm not sure about all bb turbos but Garrett bb turbos want between 40-45 pounds of oil pressure. Most restrictor fittings for the Garrett bb turbos are 1mm. Only way to be sure that you're getting the right amount of pressure to the turbo is to tee into the feed line after the restrictor with a oil pressure gauge. That's what I plan to do.

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 Post subject: Re: oil feeding
PostPosted: Sat Jun 09, 2012 10:34 pm 
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1987TurboSprint wrote:
From what I've read only ball bearing turbos require a restrictor. I'm not sure about all bb turbos but Garrett bb turbos want between 40-45 pounds of oil pressure. Most restrictor fittings for the Garrett bb turbos are 1mm. Only way to be sure that you're getting the right amount of pressure to the turbo is to tee into the feed line after the restrictor with a oil pressure gauge. That's what I plan to do.


1mm = 39.37 thousandths of an inch. I was trying to be kind to those constrained by imperialism...

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Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.HP is how fast you hit the wall, torque is how much you push the wall out.


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 Post subject: Re: oil feeding
PostPosted: Sun Jun 10, 2012 12:27 am 
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Yep, this is the one I bought after reading a dozen posts from google searching and then reading the second FAQ question on Garrett's website here. I will try it with and without with a oil pressure gauge to make sure I'm in that 40-45 pounds zone.

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1987 Chevrolet Sprint Turbo under construction


Last edited by 1987TurboSprint on Sun Jun 10, 2012 12:42 am, edited 1 time in total.

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 Post subject: Re: oil feeding
PostPosted: Sun Jun 10, 2012 12:41 am 
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One of the post I came across here. Some places say journal bearings don't need a restrictor, othe places say they want a .060" restrictor. eBay Austraila has a listing for a tdo3 restrictor thats 1.5mm. Again though most places I looked said you should always check to see what your oil pressure feeding the turbo is with and without the restrictor anyways to make sure because pressures change from engine to engine.

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 Post subject: Re: oil feeding
PostPosted: Sun Jun 10, 2012 12:44 am 
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ellpee wrote:
1987TurboSprint wrote:
From what I've read only ball bearing turbos require a restrictor. I'm not sure about all bb turbos but Garrett bb turbos want between 40-45 pounds of oil pressure. Most restrictor fittings for the Garrett bb turbos are 1mm. Only way to be sure that you're getting the right amount of pressure to the turbo is to tee into the feed line after the restrictor with a oil pressure gauge. That's what I plan to do.


1mm = 39.37 thousandths of an inch. I was trying to be kind to those constrained by imperialism...

That's just how all the ones I've seen are listed. Everything else on our cars are metric anyways =)

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 Post subject: Re: oil feeding
PostPosted: Sun Jun 10, 2012 4:20 pm 
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Location: lake stevens, wa
Thank you. Good learnage.

87turbosprint in the link to the other forum are they talking about the housing itself being under pressure? And if it leaks under that pressure the housing is no good. I've never heard such a thing but perhaps I read it wrong?

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GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Sun Jun 10, 2012 4:54 pm 
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sledgehammer wrote:
Thank you. Good learnage.

87turbosprint in the link to the other forum are they talking about the housing itself being under pressure? And if it leaks under that pressure the housing is no good. I've never heard such a thing but perhaps I read it wrong?
Post #13 is talking about oil supply and restrictors.

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1987 Chevrolet Sprint Turbo under construction


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 Post subject: Re: oil feeding
PostPosted: Mon Jun 11, 2012 6:01 pm 
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I've read it a couple times now and I don't think I need a restriction. Because in the housing there is two 1/8th inch holes on either side that I would guess go to journals. But there is another hole in the middle that is about 1/16th inch. And I'm worried that I would be starving the engine for oil. What are some thoughts on this? Also where is a good place to get oil feed from on the 96 g13 8valve engine. I don't see any spots on the head.

_________________
GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Fri Jun 15, 2012 10:52 pm 
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Location: lake stevens, wa
?? Where is the best place to get oil feed for the turbo?

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GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Fri Jun 15, 2012 11:54 pm 
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I'm pretty sure you don't want to feed the turbo from a passage in the head. I'm not sure on the 8v sohc's but on g10's there is an oil passage on the exhaust side of the block right by the oil pump. At least there is on my t3 g10, I think on the non-turbos the passage is just plugged. I'm pretty sure the closer to the oil pump the better. Also on the G10's there is a plugged oil passage right next to the oil pressure sensor, behind the front engine mount.

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 Post subject: Re: oil feeding
PostPosted: Fri Jun 15, 2012 11:58 pm 
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Location: lake stevens, wa
Oh ok. There is a plug on oil pump. I didn't think that would be a good idea because it would starve the rest of the engine.

_________________
GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Sat Jun 16, 2012 2:10 am 
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I used the bung that had the stock oil pressure sensor in it and moved the sensor up to the head.

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2006 Scion xB (fun-mobile)
1990/92 Suzuki Swift GTi TURBO (The GTiT)


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 Post subject: Re: oil feeding
PostPosted: Sun Aug 05, 2012 1:42 am 
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Location: lake stevens, wa
Anyone know if the trans coolant lines in an auto radiator would hold up to engine oil temp and pressure. I was thinking i may as well use them if i can rather than no oil cooler. Thanks

_________________
GEO MAFIA!
00 swift 2dr turbo 1.3 5spd 4.10. Sold to friend.
93 geo metro with 96 1.3 5spd swap turboed at 5psi. roommates.
14 ford Mustang v6.


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 Post subject: Re: oil feeding
PostPosted: Sun Aug 05, 2012 8:01 am 
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Location: columbus, ohio
in general, the passageways in a transmission cooler are smaller and create a huge restriction and an attendant pressure drop if you use them as an oil cooler.

i wouldn't do it. i'd use a dedicated oil cooler heat exchanger with larger bore lines and hoses.

_________________
1991 Blue Geo Metro Convertible highly modified 1.0L Turbo3 5 spd. - 1991 Red Geo Metro Convertible customized with a Twincam 5 spd.

My Turbo3 Project
My Cardomain Page -Ol' Blue
My YouTube Channel
My Photo Gallery
SAAB Sonett II


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