Turbo Coolant line in the way

[ilikerice]

I got an issue that I do not know how to tackle this..

There is a turbo coolant line (assuming) that runs off a coolant pipe behind the exhaust manifold. It is in the way of another outlet/inlet of some sort.

Can someone tell me what that is for?

Do I need to use it, or can i plug it of?

What goes there?

I do have another coolant pipe that does not have this. Should i just use that one instead?

 

[19Eclipse90]

The one on the block is the turbo coolant feed for a 2G. If you can find another, smaller plug that fits the block and clears the water pipe, that would be ideal. Unfortunately, I don't know what thread size it is. http://www.dsmtuners.com/forums/newbie-forum/385767-2g-block-coolant-line.html

EDIT: Helpful info on the size of that hole in the block: http://www.dsmtuners.com/forums/newbie-forum/341365-block-fitting-size-turbo-coolant-7-bolt.html#post151912768 and http://www.dsmtuners.com/forums/newbie-forum/385767-2g-block-coolant-line.html#post152375764

What's on the water pipe is the turbo coolant return for a 1G. You will need this unless you aren't running water to your turbo.

 

[ilikerice]

Cool. If I use the other pipe I have. Where does the return line go from the turbo then? I dont see any other spots where a return would go.

 

[19Eclipse90]

There aren't any. Unless you mean to modify that pipe for a return for the turbo and one for the oil cooler (which I see you have), you shouldn't use it.

That's why, IMO, it is ideal to find a smaller plug for the block.

 

[ilikerice]

OK, so keep the pipe i have on now and plug the block?

Sorry, I'm a little confused on how I should set this up. This sux that I'm using parts from every forkin car from 1990-1999 n/a and turbo..

 

[19Eclipse90]

Yes. Both the turbo and the oil cooler will be fed from the thermostat housing; each must also return to the water pipe.

 

[ilikerice]

Ok, so now that I got my head on and I can visually understand whats going on, I need some advice.

This is a 1G head on a 2G block. I will be running a 16G now.

A- is going to be my oil feed to my turbo. What size should i get for this?

B- is going to be my turbo coolant feed: someone told me I dont need these vacuum lines for
anything on a 2G. So I was just going to remove this and use it as a coolant feed.
I am curious if I can (T) this off to also run to my Oil filter housing "F"

C- You stated earlier this is a Coolant feed also. Should I use this for my turbo or my Oil filter housing
cooler? I was thinking about using it for my OFH cooler "F"

D- I was planning on just blocking this one instead. BUT if I could (T) off "B" for both turbo and OFH, I
would like to just plug "D" and "C".

E- I figured this runs to the coolant return so I just run a hose to those two.. easy enough.

F- Is my coolant feed to my OFH I am assuming by process of elimination

Input and suggestions greatly appreciated.

 

[19Eclipse90]

Unless the size at A has been changed, it is an M10 x 1.25mm. The Mitsubishi banjo bolt (MF650102) can be had from a number of sources, for example: EXTREME PSI : Your #1 Source for In Stock Performance Parts. I consider that a bit expensive for one bolt, so I went with this instead: SS Oil Feed Line-Head to Mitsubishi Turbo : JNZ Tuning.

B, correct, you do not need that on a 2G. It's perfectly fine to remove it and use the location as a coolant feed. Yes, you can use a T here if you really want to. I wouldn't because of how easily another feed could be opened (see below), but that is up to you.

C, yes, is the coolant feed for a 2G. Even if it can be used without getting in the way of "D", I wouldn't use it. On your thermostat housing, you have two available ports (just to the right of "B" in the picture and just to the right of the water temperature gauge unit) that can be drilled and tapped for a 1/4" NPT fitting (barb or other) that would work much better as a feed within your system and doesn't require a "T" of any sort. Drilling and tapping should be relatively easy as the housing is only aluminum.

As for the hole in the block, if I had to guess I would say it is 3/8" BSPT, the size of one of the larger plugs found in the oil filter housings. Some threads on here suggest that it can be blocked off using oil drain plugs, but if I'm imagining it correctly, that requires you leave what you have circled in "C" in the block which would cause even more issues.

EDIT - Check here for the size of the hole in the block. http://www.dsmtuners.com/forums/newbie-forum/341365-block-fitting-size-turbo-coolant-7-bolt.html#post151912768 and http://www.dsmtuners.com/forums/newbie-forum/385767-2g-block-coolant-line.html#post152375764

D, since you're running coolant to your turbo, you need this as the turbo coolant return.

E and F, you are on the money.

I think that covers everything there.

 

[ilikerice]

Thanks a bunch. Ill get right on all this. Just waiting for the guy with the turbo. Then I can start running lines and measuring lengths.

I feel like I was being graded on a test with that post.

 

[19Eclipse90]

Thanks a bunch. Ill get right on all this. Just waiting for the guy with the turbo. Then I can start running lines and measuring lengths.

I feel like I was being graded on a test with that post.

Sorry, I just want to make sure you and anyone else who might find this thread in the future has it all squared away.