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Old 10-26-2012, 06:39 AM   #1
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Default Sr20 t25 oil lines and fittings specs.

I have a turbo (SR20 T25) and I'm planning on purchasing the remainder of the parts i need soon. To give you an idea of how the turbo will be positioned i'll also tell you that I will be getting the DIY turbo kit from flying miata.

I have a 2000 miata and I know i'll need a brass tee to come off the oil pressure sender. What is the size of this brass fitting?

What are the specifications you used for the fittings coming off the block and what are the sizes for the feed and drain on the turbo? I've read that 4 -an for the feed and 8 -an for the drain lines are the typical hose diameter so i'll probably use that size.

Also what length hoses did you use for these oil lines?


Your experience and knowledge is very much appreciated,
Eric
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Old 10-26-2012, 09:05 AM   #2
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I got my oil feed line and fittings as a complete kit from FM.
Give them a call. It's a complete kit.
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Old 10-26-2012, 10:53 AM   #3
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i would like to know the answer to this question as well. what thread is the fitting going into the block? what thread are the coolant and oil supply on the turbo? does anyone know what size restrictor to use for a ball bearing gt2560r? I know some places have kits but i want mine to be just right, i dont want excessively long lines. Im running my turbo in a festiva so the position of my turbo will be much different then where a miata would be.
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Old 10-26-2012, 11:25 AM   #4
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Abe at Artech (PM him on here) can also offer complete kits, although not the hard lines like FM can do. But also not at the price FM sells their stuff at.

I only bought Abe's water lines as much feed and drain carried over from my previous oil cooled setup, and I think I paid something like $45 shipped. The whole package of fittings, water lines, oil feed, and oil drain was something like $120 shipped.
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Old 10-27-2012, 05:26 AM   #5
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that is not to a bad price. Were the lines also steel braided?
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Old 10-27-2012, 09:55 AM   #6
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Don't think so, really nice rubber lines though. One of mine has withstood a track day sitting directly below the manifold.
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Old 10-27-2012, 03:26 PM   #7
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do you remember the approximate length of the oil lines?
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Old 10-27-2012, 03:47 PM   #8
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Email or PM him, like I said I didn't get the oil lines.
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Old 11-17-2012, 09:27 PM   #9
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i got my fittings today. i will run -6an on coolant, -4an oil feed, and -8 on oil drain. for all the fittings i paid 62 bucks but i got the wrong turbo drain! I need a 38mm drain. I also am not sure what size threds i will need for going in the block. ill post pics later.
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Old 11-19-2012, 04:52 PM   #10
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If you’ve got an early block (not an NB like the OP) which has the oil and water feed ports on the exhaust side, the fittings are pretty hard to find. I bought them here:

Oil Feed Port:
AN -3 ( 3AN) to M10x1.5 Metric Stainless Steel Adapter
eBay seller Torques_UK
Item No. 150617977133
$8.56 shipped to the USA.

Water Feed Port:
Male 12 x 1.5mm Metric Concave Seat to 4AN Male Steel
Pegasus Auto Racing Supplies
Part No. 3265-40 (Same as Goodridge 306-04-M12P)
$10.94 shipped.

I also found a cheap source for typical Garrett turbo coolant fittings. Male 1/4" JIC to 14 x 1.5mm Male c/w Washer and O-Ring, Adaptall Part No. 9068-04-14. Clearwater Hydraulics in Idaho has them for $4.12 each and will ship in a USPS first class padded envelope.

Don’t by this oil feed restrictor fitting if you have a Garrett ball bearing turbo.

DIF 10016 Turbo Oil Restrictor -3AN to 7/16-24 (.032" Oil Hole Size)



I bought it because I wanted a steel fitting and not an aluminum one. The turbo’s oil inlet port has an SAE 7/16-24 flare in it. This fitting doesn’t have a corresponding inverted flare and doesn’t seat far enough to use the included copper crush washer. FR Sport told me it would still work with the tiny inverted flare machined into the fitting, but with less than 1/32” of contact, that's doubtful.
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Old 11-27-2012, 10:36 PM   #11
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ok i have my motor all apart and i cant remember which lines go where. looking at this picture where the nipple comes out of the block is this coolant? then diagonal to the lower right is oil?


so the coolant on the block is Male 12 x 1.5mm? and the oil port is M10x1.5 Metric? this is a fwd 1.6 b6t motor out of a gtx/capri. I would imagine it would be the same as miata? where does the turbo coolant return go? Is it a good idea to put in a "t" at the oil port on the block for a oil pressure sender? or should i pull oil pressure from some where else?
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Sr20 t25 oil lines and fittings specs.-img_7525.jpg  
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Old 11-27-2012, 11:03 PM   #12
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Quote:
Originally Posted by Hot_Wheels View Post
ok i have my motor all apart and i cant remember which lines go where. looking at this picture where the nipple comes out of the block is this coolant? then diagonal to the lower right is oil?


so the coolant on the block is Male 12 x 1.5mm? and the oil port is M10x1.5 Metric? this is a fwd 1.6 b6t motor out of a gtx/capri. I would imagine it would be the same as miata? where does the turbo coolant return go? Is it a good idea to put in a "t" at the oil port on the block for a oil pressure sender? or should i pull oil pressure from some where else?
Your 2000 engine block isn't going to have the oil port or the coolant port there. You get oil from the other side of the engine. Either get a T fitting for the oil pressure sender, or get an oil filter sandwich plate and take it from there. Your coolant is going to come from the front of the motor. You will see a small hose that goes into the thermostat housing. Take it from there. Simple in & out.
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Old 11-27-2012, 11:04 PM   #13
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Coolant fittings - You can see them in this picture from an old build of mine. They are the braided lines in the front
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Old 11-27-2012, 11:34 PM   #14
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i hi jacked erics thread. Im actually working with a 1.6 from a mazda gtx/capri. so its exactly as you see in the picture.
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Old 11-27-2012, 11:55 PM   #15
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My bad. The oil line is the one in that picture without the fitting. That coolant line has to return somewhere. I'm guessing there's a return in the coolant body coming off of the water pump.
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Old 11-28-2012, 04:59 AM   #16
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this site always comes in handy

Turbocharger Specs

and as for water lines i followed the 'flyin'miata' guide

http://www.flyinmiata.com/support/in...all_turbos.pdf
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Old 11-28-2012, 02:28 PM   #17
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Quote:
Originally Posted by Hot_Wheels View Post
so the coolant on the block is Male 12 x 1.5mm?
That's what I thought until I tried to install the fitting I bought onto the block. My '94 Miata BP block is tapped M12 x 1.25.
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Old 10-04-2016, 04:35 PM   #18
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Quote:
Originally Posted by dustinb View Post
Coolant fittings - You can see them in this picture from an old build of mine. They are the braided lines in the front
did you just use any two bolt flange for that air intake to the turbo? Or did you buy that intake?
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Old 10-04-2016, 05:47 PM   #19
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I feel like this thread might be a little old
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