New to this forum but have owned z32's for 15 years now..... located in the US, not the UK ;)

I have an issue currently with my oil filter tree. My z is a 1990 TT chassis, with a "JDM" motor installed recently.

 

I'm truly not sure which oil filter tree I have on my z. The "mechanic" installed the oil pressure sending unit into the tree in order to utilize the stock harness (U.S. passenger side), but the tree doesn't have the "spout" for the oil cooler line.

 

I'm starting to think I have a EURO spec oil filter tree, or perhaps a 97-99 JSPEC motor, etc.

The oil filter tree has the 2 check ball valves in it (unlike the NA trees which don't have these check valves).

I also have an oil pressure sending unit installed on the driver's side (left side for USDM cars).

 

I'm hoping someone can post a pic, or explain clearly how EURO models are hooked up (oil filter tree and oil cooler).

 

Thanks in Advanze!!!!

As far as I'm aware UK/Euro spec is the same as Jspec.

So your OPS unit is installed on the oil filter tree?

Your tree has a "spout" for the oil cooler line?

The cooler line is on the tree, the sender is on the passenger side attached to the turbo oil feed line.

Sounds like you have a series 3/4 engine as the sender unit would be on the US Driver Side and Oil Filter On the opposite.

 

I've recently bought a new harness from wire specialties and the connection is on the opposite side so i'm needing to somehow move

the sender back to the opposite side.

JaiKai, that is interesting info.

I knew the motor was "new style" but I'm not sure what year exactly.

So perhaps the oil cooler spout was removed from my tree, and the OPS unit was tapped into it?

I also want to figure out which heads, fuel injectors, manifolds and turbos I have too :)

I have checked the JDM Nissan parts database for you and there are only 2 different oil trees used for JDM engines from 1989 up to 1998.

 

15238-30P10, which is the NA variant without oilcooler connections

 

 

and the 15238-40P11, which is the TT variant with oilcooler connector

 

 

maybe you have a modified NA tree and the previous owner had an external oil-filter/cooler re-locator kit.

I have seen this on a few modified JDM engines/cars

Oh, and to answer your question regarding the EURO tree: it is exactly the same as the US Twinturbo oiltree (there are no EURO-spec NA's)

Heads are easy. On the side left is at the back from memory it's stamped

Early Late

NA. 30p. 10y

TT. 40p. 48p

Early injectors are square topped, late are oval. The fuel rail is different too. Have a google images search and you will soon learn the difference.

Lymon.... both of those images make the tree look short.... mine is as long as a usdm tt tree.

 

Stephen.... my injectors are "new" style. i just couldnt match them to any injector (visually) via images on the internet. they might be the new style 370cc jecs (oem) as they are purple.

 

This keeps getting more puzzling.... haha!

 

I appreciate all the insight!

Lymon.... both of those images make the tree look short.... mine is as long as a usdm tt tree.

 

Stephen.... my injectors are "new" style. i just couldnt match them to any injector (visually) via images on the internet. they might be the new style 370cc jecs (oem) as they are purple.

 

This keeps getting more puzzling.... haha!

 

I appreciate all the insight!

I share your pain. I discovered a few months back that I had a late spec 10y NA block with turbos bolted to it and it was a late lower plenum with an early fuel rail and injectors mashed into it. Right mess.

I share your pain. I discovered a few months back that I had a late spec 10y NA block with turbos bolted to it and it was a late lower plenum with an early fuel rail and injectors mashed into it. Right mess.

not sure what you mean by "short", but if you have a couple of days, I will take a picture of a JDM filter-tree vs a EURO-spec one.

I'm currently rebuilding 2 engines, a JDM-spec and a EURO-spec.

 

I can't remember the tree being any different, other then the oil-pressure sender on the JDM engine is installed on the LH turbo oil feed, where in LHD engines it is installed on the tree itself. (but on both type engines it can be swapped to either location as there's a blanking plug/screw that can be removed, so the sender can be installed there)

not sure what you mean by "short", but if you have a couple of days, I will take a picture of a JDM filter-tree vs a EURO-spec one.

I'm currently rebuilding 2 engines, a JDM-spec and a EURO-spec.

 

I can't remember the tree being any different, other then the oil-pressure sender on the JDM engine is installed on the LH turbo oil feed, where in LHD engines it is installed on the tree itself. (but on both type engines it can be swapped to either location as there's a blanking plug/screw that can be removed, so the sender can be installed there)

Is that what that blank on the tree is, is it. Ideal location for oil temperature readings maybe.

Is that what that blank on the tree is, is it. Ideal location for oil temperature readings maybe.

Stephen.... I'm aware about the markings on the heads, I was curious if there's a way to see the markings with everything installed in the car?

Also, how did you determine which block you had? I would also like to determine the same thing.

Lymon.... pics would be great! I have time, seeing as my car is up and running (just without the oil cooler installed). I've performed miracles since getting my z back from the moron "mechanic". I wish I was in the position to yank the motor, but I'm not :(

More details...... Hope my pics worked, this is my first attempt at posting photos.

 

Here is NA vs TT... notice NA is shorter. Mine is the same length as the TT tree.....

 

Here is the version that is installed on my car currently. Notice there is no "spout" sticking out for the oil cooler line. My OPS unit is installed where you see the bolt in the pic.

 

Here is mine from the bottom, with oil filter removed. Notice the 2 ball check valves - these indicate TT tree, as the NA tree doesn't have these (due to differences in the block)

 

Here is how my oil pan is capped - any suggestion on a better method to cap this? I didn't do this, but it appears it's saturated and might be leaking slightly.

Stephen.... I'm aware about the markings on the heads, I was curious if there's a way to see the markings with everything installed in the car?

Also, how did you determine which block you had? I would also like to determine the same thing.

Lymon.... pics would be great! I have time, seeing as my car is up and running (just without the oil cooler installed). I've performed miracles since getting my z back from the moron "mechanic". I wish I was in the position to yank the motor, but I'm not :(

More details...... Hope my pics worked, this is my first attempt at posting photos.

 

Here is NA vs TT... notice NA is shorter. Mine is the same length as the TT tree.....

 

Here is the version that is installed on my car currently. Notice there is no "spout" sticking out for the oil cooler line. My OPS unit is installed where you see the bolt in the pic.

 

Here is mine from the bottom, with oil filter removed. Notice the 2 ball check valves - these indicate TT tree, as the NA tree doesn't have these (due to differences in the block)

 

Here is how my oil pan is capped - any suggestion on a better method to cap this? I didn't do this, but it appears it's saturated and might be leaking slightly.

Nope, I did it wrong... haha, sorry moderators and viewers!!! I'll learn ;)

Nope, I did it wrong... haha, sorry moderators and viewers!!! I'll learn ;)

I have never seen a tree like that before.

Certainly not a EURO-spec tree.

I have never seen a tree like that before.

Certainly not a EURO-spec tree.

Yeah. With your battery out the way I recon acess to your head markings would be easy. They are stamped in 1" letters on the corner one head it's at the front the other at the rear.

Infact theres a pic of mine here;

http://www.300zx.co.uk/forums/showthread.php?179355-2014-winter-works

Yeah. With your battery out the way I recon acess to your head markings would be easy. They are stamped in 1" letters on the corner one head it's at the front the other at the rear.

Infact theres a pic of mine here;

http://www.300zx.co.uk/forums/showthread.php?179355-2014-winter-works

Thanks guys. More digging to be done today :)

 

By the way.... how do you post pics correctly on this forum? I searched quickly but didn't find an answer.

 

Z ya!