Drilling Turbo oil lines on a TD42 N/A motor

[Lowy44]

In regards to fitting a turbo to a TD42 N/A motor, Has anyone thought about or done it, drilling the block for the turbo oil lines? Every thread I have read, all mention installing fittings to the sump. Is there any reason why you couldnt drill and tap a hole in the block where the turbo lines are fitted on the TD42T version motors? I am currently in the process of stripping a recently acquired N/A42 for inspection, and although I havnt got the sump of yet, I really cant see any reason why this could not be done.

Thoughts peoples?????

[MudRunnerTD]

Do you mean the return line? or the supply line mate? The return line normally goes back to the sump because the oil is Hot when its been used through the turbo and goes back to the pool to be cooled. The supply should be taken out of the side of the block from an existing bung.

Also obviously most are fitting the turbo to the running engine in-situ and dont have the luxury of a stripped down block. There should be a heap of available openings into the oil supply galleries down the side of the motor to take the supply from mate.?

[nissannewby]

I have thought about this myself. I wouldnt advise it. Being that it wasnt cast in the block to start with then drilling and tapping the block for your return could muck with the integrity of the block itself. I have always removed the sump when fitting oil drains to them.

[Lowy44]

MudrunnerTD, I'm refering to the turbo oil drain line. I'll have a look at the block today to see if there is any casting in which this may be possible. I would have thought that on the TD42T versions, the threaded hole would be where there is a raised section in the casting, and assuming the blocks are casted the same, that thecasting would be there on a N/A42?

[nissannewby]

Looking at both my patrols one NA and the other a T the blocks do look slightly different. The T block looks to have more ribs in it as such. Will be interested to see how you go keep us posted.

[AB]

The T block had a drain plug but I would be very surprised if your N/A motor had a plug for the drain. Mine didn't and I punched a hole in the sump as mentioned above.

Some people put a T piece on the alternator drain but I'm not too keen on that myself with pressure build up.

Have a look anyway mate and let us know. The plug near the LH front engine mount is oil feed, the plug LHR of the block is water drain, I don't think there is anymore plugs on the LH of the block for N/A.

Take a photo of your block too and post it up...

[Lowy44]

AB, I'm taking about whether or not the N/A block has a raised section in the casting where the plug would normally go on a T block.

I can post a pic up as soon as I get it, can someone post a pic of the LHS of the T block to compare?

[AB]

I'm 99.999% sure it does mate just no plug of course. I will check mine tonight when I get home.

[Lowy44]

These are the castings I was talking about. I reckon the lower casting could be drilled and tapped to suit, and be utilised for the turbo drain.

[MC97GQ]

Lowy44,

On my TD42, which has an after market turbo fitted, toward the front of the motor on the alternator side are two holes that were used to run oil lines for the turbo.

Mine doesn't have the oil cooled alternator, so you should be able to use them, I will try to get a photo up some time to show what I am talking about. But if you look at the block you should see where I mean.

I hope this helps

Mark