im trying to find out how to hook up the oil return/ feed lines for the turbo . Can anyone guide me through this process . Best route , easiest , modifications , suggestions . here are pics of the process and how the turbo looks . pretty much almost done with it maybe another week or two although i want to finish it now

 

What block are you running? If it is a turbo motor it should have come with a feed line on the drivers side front iron. If not, I have heard of people taping into the oil system by the oil filter. I run a 4AN line to feed the turbo. If you are running a stock turbo match the feed line size to the stock feed line. If it is aftermarket refer to the manufacturer for suggested size.

The drain line is a little more complex. You will need to:
1. Remove the radiator
2. Pull off the water pump/alt
3. Remove the front pulley assembly
4. Remove the front cover bolt
5. Remove the front cover (remember to hold the clutch in while you are doing this)
6. Drill and tap the front cover for the return line (size may vary depending on turbo size)
7. Put the car back together.

There are other ways but this is the way they came from the factory. Do it right, do it once. Oil pan is a second option.

I hope that when you had the end play adjusted you wrote down the value. That will be essential when you put the motor back together. If you did not I would try and use a torque wrench first and find what that value is.

Hope this helps,
Z

 

the block is a 12a . the turbo itself is from the old school 12at . ok so i can tap into the the oil filter as the feed and tap into the oil pan as the return ?

 

i ment oil cooler not filter

 

Oil cooler is unfiltered oil, not a good idea. Buy the oil pedistal block from ReSpeed for your supply tap. If you remove the oil pan, it is possible to tap the front cover on the engine, if you're very careful about collecting shavings.

 

cool , i guess the oil pan is coming off . but does anyone have any pics on how they tapped the front cover . pictures are always better then words .

 

What about putting a return in an OMP blockoff plate (assuming all of the OMP is removed). I would rather do that than drill into the front cover itself.

 

1. It's too high usually.

2. You still have to remove the front cover to remove the drive unit for the MOP.

 

Yeah I know you still have to remove the front cover, I'd just prefer not to drill and tap into it if I don't have to. I hear you on it being too high though, I'll probably just end up going in the pan despite the frothy oil issue.

 

Tapping the front cover is not hard. The part that hurts is the cost of a new 1/2" NPT tap and the correct sized drill bit. For the pan, it's better to drill a hole and weld on a nut for more thread bite.

 

I looked at the ReSpeed unit. It looks like unfiltered oil.

Doesn't RotaryShack have a turbo oil filter?

 

Get / make a baffle...

 

RotaryShack sells a turbo oil feed kit that puts a T before the OEM oil pressure sender and sends the oil from there. Thats the word from Robert.
I'm trying to buy one right now but am waiting to hear back from him.

 

I could add an oil filter before the turbo. I have a spare empi oil filter pedestal with fittings just waiting for a project. It would take the unfiltered oil from the ReSpeed or RB temp and presure block (type 1) and send it through a large filter before the turbo. I must do this because the front plate does not have a threaded fitting like the S4 and S5 front plates, and the engine is together so I'm not going to take it apart just to attempt to cut some threads.

 

Jeff, I haven't studied the flow ports of either adapter. I does make a difference which side of the filter the oil comes out of.

 

Ive used an early style tall filter pedestal and tapped the filtered side for an oil feed. Very easy to do.

 

There's that option I suppose. I have a spare tall style around here.

 

There is another option. I tig welded some aluminium tube onto the front cover and whipped up a brass hose tail fitting for the turbo. All I needed then was a length of hose and some clamps.

 

Many ideas for oil feed and drain:

http://www.aaroncake.net/rx-7/naturbo13.htm

 

found this while searching ... i guess thats where you drill and tap the oil return . doesnt look too hard

 

That pic looks like it's tapped in the front iron, not the front cover. In the linked thread is a pic of where I tapped my front cover for a future oil return, It still has the brass plug in it, lol.

https://www.rx7club.com/attachment.p...0&d=1156454872

 

^That is where I tapped mine as well. There is a spot that is perfect right bole the OMP.

 

Wow that is CLEAN. Nicely done.

 

Yeah plus it helps that he powdercoats everything, lol