best place to get water and oil lines to feed turbo - RX8Club.com



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Old 12-14-2010, 11:14 PM   #1  
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best place to get water and oil lines to feed turbo

where is the best place to get water lines and oil lines for a top mount turbo

I was thinking splitting into the lines that go to the heater core, and tie that to the turbo for the water lines.

the oil lines is usually from the oil sandwitch plate that can be purchased but I want to use that for oil temp and pressure sensors, so my question is, Is there another place to get oil from, or can one T, into the oil sandwich plate to get the oil feed?
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Old 12-14-2010, 11:37 PM   #2  
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Most of us use the coolant lines running through the Throttle Body for the water lines.

Depending on the oil sandwich plate you get, some have 2 ports, some have 4. get one that has 4 and you can use the 3rd port for the oil feed. You can tee off the oil sandwich plate if you only have 2 ports.

check atpturbo.com, that is typically where I look to get the fittings and lines for the turbo.
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Old 12-15-2010, 12:09 AM   #3  
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As the takeoff point is unfiltered oil , an in line oil filter is also a good idea .
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Old 12-15-2010, 06:04 AM   #4  
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My sandwich plate had 2 or 3 ports to tap into.

For coolant I know many use the throttle body line and it is supposedly sufficient. But I personally used my heater core lines. We are talking about something that gets so hot it glows red...more cooling capacity cant hurt. I didnt split it though, I just ran it inline.
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Old 12-15-2010, 12:41 PM   #5  
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Quote:
Originally Posted by Brettus View Post
As the takeoff point is unfiltered oil , an in line oil filter is also a good idea .
Thats Exactly why I was looking for a different location


Quote:
Originally Posted by Mawnee View Post

For coolant I know many use the throttle body line and it is supposedly sufficient. But I personally used my heater core lines. We are talking about something that gets so hot it glows red...more cooling capacity cant hurt. I didnt split it though, I just ran it inline.
I completely agree with you

Last edited by FazdaRX_8; 12-15-2010 at 01:09 PM.
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Old 12-15-2010, 08:37 PM   #6  
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i pulled off a sandwich plate (prosport) and used a inline filter from mcmaster carr for the oil and the throttle body lines for coolant. mine is also a remote mount so for coolant the turbo is not seeing near the temps.
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Old 12-15-2010, 10:42 PM   #7  
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Quote:
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Thats Exactly why I was looking for a different location
I have mine in one but you don't want to go there .
Better to use the normal spot and get a filter .
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Old 12-15-2010, 11:48 PM   #8  
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Quote:
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I have mine in one but you don't want to go there .
Better to use the normal spot and get a filter .
intriguing
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Old 12-16-2010, 05:28 AM   #9  
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Is there anything in particular we should look for in a "inline" oil filter?
Flow rating?
Filter density?
I'm also assuming you replace these with the same frequency you replace the standard oil filter?

I've never purchased a inline oil filter before, sorry for the noobness
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Old 12-16-2010, 05:40 AM   #10  
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http://www.moroso.com/catalog/catego...?catcode=20005

I would place it in such a way as to be able to easily remove and clean it - inspect every 3000 miles.

I have mine post oil filter, because I am lazy.
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Old 12-16-2010, 06:48 AM   #11  
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^ Thanks man
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Old 02-09-2014, 08:36 PM   #12  
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Old thread bump, but to balance out this discussion someone needs to point out the obvious disadvantage of the inline filter. OEMs don't use inline filters because of the risk of blockage resulting in turbo failure due to oil starvation. This is the reason why Subaru went away from inline turbo feed filters after a brief period - they had significant turbo failures due to blocked filters. Oil filter blockage could occur over a period of time or less likely due to a one-off oil contamination event during engine work/servicing.

So if you can work out a method of tapping a clean oil line, or even running unfiltered oil with no inline filter, you may choose to do so.

One suitable method is to use a remote mount oil filter kit, then tap the filtered oil line on its return from the remote filter back into the block. This way you're running filtered oil without the risk of starving your turbo.
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Old 03-26-2017, 08:22 AM   #13  
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A small thread resurrection. Does anyone have anything to add to this from their experience since earlier posts?

From the above, I presume that the easiest way to plumb in the water coolant lines is to divert the hose from the TB to the rear rotor housing through the turbo (ie route hoses from the TB to the turbo lower inlet and turbo higher outlet to the rear housing). I prefer purpose-made heat-shielded stainless hose near the turbo to a slip-on sleeve to protect soft hose.

I'd have a look at routing from the heater hose but am away from my car for a while and don't really want to wait until I'm back for me to work out what I want to do, as that may delay my ordering bits.

I looked at clocking the CHRA but decided not to as my CHRA has the inlet and outlet ports at different levels, thus giving little gain for the hassle of realigning the compressor housing and wastegate actuator.
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Old 03-26-2017, 02:45 PM   #14  
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Quote:
Originally Posted by Ian_D View Post
A small thread resurrection. Does anyone have anything to add to this from their experience since earlier posts?

From the above, I presume that the easiest way to plumb in the water coolant lines is to divert the hose from the TB to the rear rotor housing through the turbo (ie route hoses from the TB to the turbo lower inlet and turbo higher outlet to the rear housing). I prefer purpose-made heat-shielded stainless hose near the turbo to a slip-on sleeve to protect soft hose.

I'd have a look at routing from the heater hose but am away from my car for a while and don't really want to wait until I'm back for me to work out what I want to do, as that may delay my ordering bits.

I looked at clocking the CHRA but decided not to as my CHRA has the inlet and outlet ports at different levels, thus giving little gain for the hassle of realigning the compressor housing and wastegate actuator.
I have long since removed the throttle body water lines and go straight into where they came from at the pump and the back of the engine.

It's a good idea to have the outlet at turbo higher than inlet to get the siphoning effect at engine shutdown .
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Old 03-28-2017, 04:05 PM   #15  
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Thanks. I suspect I'll end up using the lines bypassing the TB.

Clocking the CHRA is important where the inlet and outlet are at the same level, as shown by the Garrett leaflet here. However, for a CHRA like mine with the inlet and outlet at different levels, as shown in the image, clocking is much less important.
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Old 03-28-2017, 04:33 PM   #16  
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Mine is on it's own circuit with a pump, heat exchanger, and reservoir. As for the TB coolant hose I just have a hose going from the rear nipple to the nipple on the tstat housing.
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Old 03-29-2017, 10:11 PM   #17  
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Quote:
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Mine is on it's own circuit with a pump, heat exchanger, and reservoir. As for the TB coolant hose I just have a hose going from the rear nipple to the nipple on the tstat housing.
You have a separate oil system solely for the turbo? Did you end up doing that out of necessity, or because it sounded like a cool idea?
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Old 03-30-2017, 10:02 AM   #18  
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Quote:
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You have a separate oil system solely for the turbo? Did you end up doing that out of necessity, or because it sounded like a cool idea?

No, cooling system, it has a water cooled center section. I do a have a custom oil pressure regulator setup (I have a thread on it) on the turbo though.

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Old 03-30-2017, 12:16 PM   #19  
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Gotcha, I guess I was a bit confused as to why you mentioned the throttle body hoses.

Do you monitor the coolant temperatures on the turbo? If so, what kind of temperatures were you seeing? Would you recommend the setup in the end?

I'm currently trying to figure out the best way to hook my BNR up, the idea of using the throttle body coolant lines always concerned me a bit. I'm not sure if I trust myself to set up a completely different cooling loop though.
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Old 03-30-2017, 01:13 PM   #20  
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Quote:
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Gotcha, I guess I was a bit confused as to why you mentioned the throttle body hoses.

Do you monitor the coolant temperatures on the turbo? If so, what kind of temperatures were you seeing? Would you recommend the setup in the end?

I'm currently trying to figure out the best way to hook my BNR up, the idea of using the throttle body coolant lines always concerned me a bit. I'm not sure if I trust myself to set up a completely different cooling loop though.

I have one of those radiator caps with the built in temp gauge on the coolant reservoir and it never gets above 200F, I had planned to install a temp gauge just for the turbo coolant but I think I am done with the car honestly aside from installing new suspension. Everything has been working well on the car for a couple of years now so I don't want to mess with anything.

Creating a whole cooling circuit is complicated but I think it is worth it. I use a common Bosch electric water pump that is used by OEM's on Mercedes, VW, etc.

But using the throttle body coolant circuit makes the most sense to keep things simple.

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Old 03-31-2017, 07:53 PM   #21  
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Sounds like a fairly simple setup the more I think about it. How much coolant does the entire circuit hold? Your oil pressure regulator setup actually looks a lot more complicated. Do you think one helped more than the other regarding the longevity of your turbo?
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Old 04-02-2017, 11:19 PM   #22  
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Mine is on it's own circuit with a pump, heat exchanger, and reservoir...
Because extra
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Old 04-03-2017, 09:23 AM   #23  
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Quote:
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Sounds like a fairly simple setup the more I think about it. How much coolant does the entire circuit hold? Your oil pressure regulator setup actually looks a lot more complicated. Do you think one helped more than the other regarding the longevity of your turbo?
It is pretty simple, I have the pump on a relay and I have a switch and an alarm for low pressure if the pump stops. The systems holds about 2.5 quarts of coolant.

The oil pressure regulator is more complicated but I do think it is necessary since our engines put more oil pressure to the turbo than is recommended.

As for longevity, this turbo has lasted but the previous one was rebuilt by Turdblown/Com Turbo and neither of them have a great rep and the turbo only lasted a few thousand miles. The last time it was rebuilt it was done by Majestic Turbo here in Texas and they have a great reputation but this turbo has also been on the regulator setup and the divorced coolant system since it was installed.
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Old 04-03-2017, 10:58 AM   #24  
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Supposedly, this one I have was rebuilt by BNR in the last 1000 miles. So I can only assume that it was done in a proper way. Though I've never sent it out to have it checked. Maybe I should drop it off at magestic just for good measure. They're only about an hour away.

Sounds like I'll have to study your oil pressure regulator setup a bit more. I think the pictures scared me more than anything.
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Old 04-03-2017, 11:17 AM   #25  
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Yeah if it were me I would have it rebuilt anyway, pulling it later is a PIA.
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