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Correct turbo oil feed line?

I have an 86 930 that I'm finishing the rebuild on and have a couple of questions regarding the turbo oil feed line.

Basically it looks like I have a mix of systems (I bought the engine in boxes after a melted piston and may not have gotten all the correct lines...)

- I have a line that looks like it fits on the front pressure sender unit, crosses over the front of the engine and drops to the turbo.

- I also have the rear banjo bolt with the 9mm restrictor ball, but am missing the hose to run from this rear stand-off to the turbo.

Is the rear sender with check valve the preferred way to feed oil to the turbo ( running a K-27 and can make up an an-4 line to replace the missing one)?

Thanks
Andrew M
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Old 06-01-2011, 05:28 PM
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Andrew

A banjo bolt with a male 4 AN at the rear restricted fitting is the most used. With the restrictor it allow some flow adjustment by addling a light spring on top of the 9mm ball if needed.

Here are a couple pics:






Cole
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Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.

Last edited by cole930; 06-02-2011 at 08:12 PM..
Old 06-02-2011, 11:48 AM
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The factory line is a hard line from the check valve and light switch to the #1 intake and the shroud screw, then rubber line to the top of the turbo.
Why would I want to use AN-4 fittings and steel mesh wrapped hose when the proper oil line is still available?
Bruce
Old 06-02-2011, 06:20 PM
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Bruce,

My reply was in response to Andrews questioning the use of a 4 AN line. Total cost of line, fittings, seals, banjo and, oil inlet flange is about $60-$80.

The factory turbo oil feed hard line PN# 930 107 125 03 - $116

The turbo inlet flex line and flange PN# 930 107 124 01 - $99.50

So the $125, or so, you save will get you and the wife a decent dinner out, a couple drinks, and probably get you laid afterward. The wife is happier and no longer *****ing about all the money you blow on 930 parts so now you can go order more parts without a hassle.

Cole's old bull young bull theory
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Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.

Last edited by cole930; 06-02-2011 at 08:12 PM..
Old 06-02-2011, 08:05 PM
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Haha, good response Cole. Alternately Andrew could ask me to give back the line he GAVE me!
Old 06-02-2011, 09:06 PM
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lol.. along with all that the AN fittings and braided line look 10x cooler.
Old 06-03-2011, 07:33 AM
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. . .and the hard line can't really be properly cleaned out.
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Old 06-03-2011, 08:03 AM
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Andrew,

I have only seen a picture of the Turbo Oil feed line that crosses the front of the fan in the service manual. I have yet to see it on any turbos posting here. Almost everyone seems to have the oil feed line that originates at termostat and runs under the intake manifold. Just currious, is there a part number for that line that crosses the fan ? The factory line seems to be the easiest route...

This is what i typically see:



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Old 06-03-2011, 10:48 AM
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The one you are talking about from the service manual is the early oil supply line and is NLA as I tried to source all the parts when I did my turbo install the best alternative is to get the kit from turbokraft as it has all you need for a lower price than the factory stuff. The banjo was difficult to source and the wait is long for the check ball housing from the factory and the 9mm ball is NLA from Porsche AG when I ordered from pelican thanks to Ben at M&K to send me one.
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Old 06-03-2011, 06:40 PM
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I have a whole bag full of balls, I mean, if anyone needs a 9mm restrictor ball let me know.

Cole
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Last edited by cole930; 06-04-2011 at 07:49 AM..
Old 06-03-2011, 07:09 PM
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Quote:
Originally Posted by Jim2 View Post
Haha, good response Cole. Alternately Andrew could ask me to give back the line he GAVE me!
Thanks Guys!
That help a lot.

Jim -
So, umm... are you back yet?

I'm heading out there today to check the lines that I have, but I think the seller kept the updated line and gave me the old style line.

AM
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Old 06-04-2011, 07:03 AM
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Yup, I'm back from vacation Andrew but no plans of going to work today. If you need it you'll have to come by my house and p/u otherwise I'll leave it with your car on Monday.

BTW, there is only one style of line. There is however two components which make up this line feeding the turbo. Perhaps the short section which bolts to the top of the turbo is confusing you.
Old 06-04-2011, 08:13 AM
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Thanks guys - got it sorted out. It turns out I did have the correct line, but the hose was rotated so it didn't seem to match up. A little rotation of the hose and a bit of finessing to get it uner the CIS system and all is good.

AM
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Old 06-04-2011, 01:25 PM
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andrew15-

I am curious if you might have a minor oil leak at this hose where you were able to rotate it.

When crimped the hose normally does not rotate on the tube. If it does, usually its become hard and has lost its ability to seal & will start to leak.

Len

Old 01-10-2012, 06:18 AM
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Not yet....
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Old 01-10-2012, 09:01 AM
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If you need to source the 14MM banjo bolt, Speedway Motors has one with a -6AN fitting on it. It is apparently used with some Power Steering applications for street rods. The link is Banjo Fittings for Power Steering Pump - Speedway Motors, America's Oldest Speed Shop . Hope this helps.
Tom
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Old 01-10-2012, 10:55 AM
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Had a chance to build a fixture so I can now Re-Hose these turbo oil feed lines...........




So now there is an alternate source......$35 plus shipping to do yours. Also available on an exchange basis.

Len at Autosportengineering dot com

Old 04-06-2012, 03:10 AM
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Quote:
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Had a chance to build a fixture so I can now Re-Hose these turbo oil feed lines...........




So now there is an alternate source......$35 plus shipping to do yours. Also available on an exchange basis.

Len at Autosportengineering dot com

$35 shipped for the feed line? That's a helluva deal! When I bought my turbo, the motor had @ 2k on a rebuild. There were leaks so my mechanic looked at the motor and pulled it. One thing led to another and he shows me the feed line the previous builder used. The guy used part of the old hard line, but replaced the rubber hose with fuel hose and hose clamps.
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Old 04-06-2012, 04:32 AM
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Thanks for the free bump WPOZZZ. You are close but not quite correct.

I am offering to RE-HOSE your original turbo oil feed line for $35. The hose is $25 and the (2) crimp sleeves are $5ea.

You must send me your original and pay the shipping costs. Its about $8 by Priority Mail, and typically takes 2-3 days coast to coast.

I have a couple spare lines, so I will re-hose them & offer them sometime soon on an EXCHANGE basis.

Email me only.

Please no PM's, its usually full and I cannot send photos via PM.

Go to my user name and click on send email.

Len

Old 04-06-2012, 04:57 AM
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I know my mechanic has another rebuild coming up, so I'll ask him if he needs the line re-hosed.
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Old 04-06-2012, 05:12 AM
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Old 04-06-2012, 05:12 AM
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