water/oil lines

Basic tech questions such as future setups, different turbo kits, car diagnosis, etc
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Bero
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water/oil lines

Post by Bero »

hey guys,
I'm running a blacktop T25 (compressor a/r .80, exhaust a/r .64) and I'm not entirely sure what AN fittings i need to be using.
I'm going to order braided lines, but what fittings should i have from the block to the braided line, and the braided line to the turbo, and from the turbo to the oilpan? (oil obviously)
and also for the water line, what fittings should i use from the coolant line to the turbo, and back into the coolant line?

basically, i need to know exactly what fittings to use.
can anyone with similar setups help me out here?

thanks
Bryan

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master_vang
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Post by master_vang »

some say that running just the oil lines should be ok....don't quote me on that though...
Bero
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Post by Bero »

well, i wouldnt want to screw anythign up now would i!

anyone? theres gotta be someone out there who knows what fittings i need?
i ESPECIALLY need to know what fittings to run from the block.
cmon ppl!
Bryan

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glacier985
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Post by glacier985 »

I am going to be running the same setup as you and have done some research about the oil lines and so far I got the feed line, but I'm working on the return line as I type.

Here is what I have

1. 1/8" BSPT Male X NPT Female
2. 1/8" NPT Female X Female X Male Tee
3. 1/8" NPT Male X BSPT Female
4. .060" oil restrictor
5. -3an steel NPT male
6. -3an steel braided 44” brakeline
7. -3an to 7/16-24 brake adapter

Right now I only have the top three parts, because thats all I need to put on the block, for the return line I have just the 1/2" NPT steel bung to weld into the oil pan, but I think all I need is the outlet flange, a couple 1/2" barbs and a -10an hose. I can get pictures of what I have setup now tomorrow if you need them.
1990 240sx SE, 96K, ka24eT Time to Finish

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Cobra723
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Post by Cobra723 »

are you a 100% sure on that? cuz im doin the same setup and all i need is the oil lines too... i need to order it asap.
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glacier985
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Post by glacier985 »

Yea Im 100% sure, because I found most of it from sr20forum with guys running t25/t28 turbos on the fwd sr's. Everything is pretty easy to find and not to expensive. The hardest thing to find is the oil restrictor, at least I can't find one for less the 15 bucks.
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Cobra723
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Post by Cobra723 »

but y would u want a oil restrictor?
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Bero
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Post by Bero »

also, what about the water line? what are you going to do about that?
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Rick
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Post by Rick »

Use the lines that goto the throttle body. Just put the turbo in place of the throttle body coolant lines. That what I just did with the GT35R.

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Post by SHIFT_KA24DET »

^^^ Pix Rick?
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glacier985
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Post by glacier985 »

I'm not running the water lines unless I absolutly need them. Which I still haven't found a clear answer. And the oil restrictor is to not allow too much oil into the turbo to blow the seals and have the turbo spit out smoke.
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Post by driftedoffroad »

oil lines are used to cool/lubricate the turbo when the engine is running (with oil pressure)

coolant lines for a turbo are used to cool the turbo after the car is off. when the coolant heats up in the turbo it actually will pull itself through and continue to cool the turbo.

conclusion as long as you idle your car down you should not need the coolant lines.
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tastyratz
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Post by tastyratz »

always run coolant lines to properly cool the turbo whenever available. a coolant lines the easiest one to run dont be lazy, a cooler turbo will produce cooler charges, be less likely to coke the oil and make scum buildup if you shut off the car hot, etc.
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Post by BillKlineVT »

Wow this didn't come up when you searched on this forum, or did you? I've been told that with 3AN lines you really don't need an oil restrictor, but I have the JGS feed line kit which is 4AN, so the .060 restrictor was needed. Here are a couple links that are of help: http://www.jgstools.com/turbo/trboil.html

You want this kit: TA004-GT 48" line w/ inverted flare adapter $54.99 ... make SURE you get the 4 foot line - I've seen the 3 foot and it's too short to make it to the turbo in any remotely clean fashion. That will take care of your feed line kit, comes with all the fittings you need, and guess what, JGS is a sponsor! This is what I have, and haven't had any problems with it.

On that same page, you can get the return line as well, which is 24" Lenght TK168 T25/28 $34.49 and TA046 1/2" NPT Steel bung $1.99 , and that should take care of your oil return setup.

In terms of a restrictor for under 15 dollars (guessing you saw them at ATPturbo), here is a link that is a very good deal: https://vs01.tvsecure.com/~vs01037/orders/index.htm and find this: 313 1/16 In. Restrictor Orifice - Controls Oil Flow into Frantz Oil Filter. $ 4.00... that's right, 4 dollars plus shipping! Same exact thing as what ATP sells, and I use it so I know it works just fine.

Regarding water lines... I didn't run any on my t25, and never had a problem. I used my turbo timer to let it circulate oil thru the housing when it was cooling down, and never had any problems. Now that I have my GT2871R, I hooked up coolant lines, which can be seen at the bottom of this thread: viewtopic.php?t=2549&highlight=water+lines

Have fun!
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Post by Cobra723 »

just out of curiousty bill, did u run ur car on the track yet? if so wat are the times?
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Post by BillKlineVT »

not on a straight track, hehe... I'm into autox and getting into track events, etc. I'll be sure to hit up the local 1/8 mile when i get back to school though.
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Post by Cobra723 »

the reason i was asking was b/c ur old setup is basically like mine. and ur new setup is wat im thinking of getting, so i just wanted to compare.
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Post by tastyratz »

a water cooled turbo isnt a necessity, just like an intercooler. if you have the input for a water line in the turbo however you better use it. a turbo can be designed different with the water jackets, chances are if you have a water cooled turbo it may run hotter without the lines in comparison to a similar one that doesnt have water line inputs. plus if you have a chance to run a water line to it for a few bucks and a few minutes work to have a turbo that runs longer, cooler, safer, and will perform better, why wouldnt you do something like that when you can run a line to the tb easily
Bero
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Post by Bero »

still looking for pics and fittings for water lines.
still not 100% on where to tap for water lines
Bryan

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Post by BillKlineVT »

Did you read the thread I linked you?? I posted the exact part numbers for the Tee's you need to tap into the heater core lines, and there are 2 pics in the link in that thread of how I tapped into the heater core lines. ATPTurbo.com sells banjo fittings that thread right into the t25 center section, and have a barbed fitting on the other end to push a hose right on there.
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BikiRom Daughterboard on a '95 ECU
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Post by Bero »

WHOOPS.. i must be stupid... lol
sry for that!

im in line now
Bryan

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