6.2 Td turbo oil lines ?

[badgravity]

Installed turbo on my 6.2blazer - just need to figure out where to take turbo oiling from - and then it hit me that maybe i can use engine oilcooler lines ?
Just need to make new hard lines.

Is it a good idea ? and where does the 6.5 TD take oil ?

 

[LOGANSTANFORTH]

Installed turbo on my 6.2blazer - just need to figure out where to take turbo oiling from - and then it hit me that maybe i can use engine oilcooler lines ?
Just need to make new hard lines.

Is it a good idea ? and where does the 6.5 TD take oil ?

I know on HMMWV's with the turbocharged 6.5, there is no oil lines for the turbo, it sets on a machined surface at the back of the block with a figure 8 shaped gasket in it and it feeds and drains the turbo that way.....there is a oil line in the middle of the lifter valley on a 6.5 for the oil pressure sending unit also.....you can see the sending unit on the left side of the picture bolted to the driverside intake manifold.....the braided steel hose is about 12-15 inches long and just screws into the middle of the lifter valley

 

[Russell]

On a stock 6.5L with a turbo mounted on the exhaust manifold, the oil is taken from a port that is drilled into the block up near the timing cover. That said, no 6.2L diesel has that port.

For my engine, I bent a 3/8" .035" ID stainless steel hard line to run from the port that the oil pressure sensor originally sat in up to the turbo, then relocated the oil pressure sensor to a port just above the oil filter that has a little pipe plug in it from the factory.

For fittings to connect my hard line to the turbo and the engine block, I purchased Swagelok industrial compression fittings. They are made of stainless steel, and make a seal between the tube and fitting that is guaranteed at over 10 000 PSI before it will fail. Installing them is very easy, and they can be loosened and re-tightened multiple times for service in the future. Other nifty fact is that the fittings do not reduce the inside diameter of the tube to create their seal.

 

[drumz2129]

On my 6.2, I added a 'Tee' fitting under my oil pressure sending unit and used a braided stainless line to feed the turbo. I noticed about a 5psi drop on the oil pressure guage. For oil return, I cut a hole in the passenger side valve cover and found a vacuum grommet the right size to seal the return hose to the cover.

 

[drumz2129]

What type of turbo kit are you adding? I used an ATS setup

 

[Russell]

Ah, good thought on the return. My truck has an electric lift pump in the fuel tank, so I simply used a turbo return plate from a 6.5L diesel where the mechanical lift pump would normally sit.

 

[cegusman]

You could also use the port right above the oil cooling lines for the feed. Just need a longer hose and weld a bung to the oil pan for the return.

 

[drumz2129]

Ah, good thought on the return. My truck has an electric lift pump in the fuel tank, so I simply used a turbo return plate from a 6.5L diesel where the mechanical lift pump would normally sit.

Not to hijack or anything, but did you add the electric pump? What was the reason? Im still running the mechanical lift pump so that option was out.

 

[Russell]

I added the lift pump so I could use the 6.5L turbo return plate, haha

My lift pump is a bone stock TBI gasoline fuel pump. Haven't had any problems with it, and it easily maintains the 9 PSI my injection pump likes to have.

 

[badgravity]

You could also use the port right above the oil cooling lines for the feed. Just need a longer hose and weld a bung to the oil pan for the return.

Also very good idea - but still no one convinced me to not use use my oil cooling ports ... since i have loop there anyway - just make bigger loop trough turbo

 

[drumz2129]

Also very good idea - but still no one convinced me to not use use my oil cooling ports ... since i have loop there anyway - just make bigger loop trough turbo

How much restriction does the turbo bearings add? Im not sure if it is free flowing through them or if there is restriction built in to keep oil on the bearings longer to pull the heat away. That would be the only concern i would have doing it that way, because you would be resrticting the flow of oil through the cooler. I would also make sure to use the return line from the cooler to feed the turbo since the turbo bearings can get hotter than the engine if your EGTs get out of hand.

 

[Russell]

I would install an actual oil cooler if you just have a loop in there right now. A good B&M plate cooler is only around $50. You don't have to run fancy stainless lines like I did, just have your local farm supply house build you some hydraulic lines to run in between the engine and the cooler.

Besides, as mentioned above, running the cooler lines through the turbo would probably present too much resistance and may open up the bypass valve which results in a large loss of oil pressure.

 

[protechk5]

Where did you get those fittings? Is that something I can get from a parts store? Also what kind of hose did you use for the return, is the return under pressure, or can you just use a rubber hose?

For my engine, I bent a 3/8" .035" ID stainless steel hard line to run from the port that the oil pressure sensor originally sat in up to the turbo, then relocated the oil pressure sensor to a port just above the oil filter that has a little pipe plug in it from the factory.

For fittings to connect my hard line to the turbo and the engine block, I purchased Swagelok industrial compression fittings. They are made of stainless steel, and make a seal between the tube and fitting that is guaranteed at over 10 000 PSI before it will fail.

 

[Russell]

Swagelok has distributors in Richmond & Norfolk in Virgina, also one in Knoxville TN, and Frederik MD. You can look them up on their website.

I used a rubber hose for the return. It is very low pressure, just uses a oil rated hose of similar diameter to a heater core hose. The 6.5L turbo has a metal bracket that takes the oil down most of the way, just a short piece of hose between the return tube and the oil return plate installed where the mechanical fuel pump used to reside.