Hello All,

I've been searching around and figured this would be a good place to document my motor swap. Long story short, my buddy built up his RevUp on a G35, but does not have time to continue his car build. So I got a great deal on a built from the ground up, super charged, RevUp. I have an '04 350z track edition Non RevUp that the motor will be going into. I am swapping the engine, ECM, and engine wiring harness.

Yes, I am aware of the extra sensors on the RevUp and incompatibilities of the harness wire mappings. Luckily, I have spent many hours going through the FSMs for the G35 and 350Z to figure out how I need to rewire the F1, F2, F3, and F102 connectors on the wiring harness. Only 2 wires that I have not been able to figure out what they are for on the G35 harness. All the pins on the 350Z are accounted for. Fun Fact: The ECM pins are the same on both cars they just come from different connectors that I have found so far.

Yes, I am aware of NATS. UPREV in Austin is going to take car of that for me. The G35 ECM already has their software on it. Also have the wide band O2's.

This car is going to be my track car. I bought it last year in decent mechanical shape, but the exterior is a bit rough. Drives excellent. The long term goal is to have a budget track car that is still road legal (even if just barely legal). I have attached a few pictures of the RevUp motor build, motor transportation, and of my 350Z.

My current task list for the swap:
1) Rewire the F1, F2, F3, and F102 connectors to match the 350Z
2) New Exhaust
3) NATS
4) Tune
5) Drive

If anyone has attempted anything similar, suggestions are welcome. I know there will be a few "just don't do its," but I think I can get it going.

Kind of a side note for the thread, but any suggestions on decent exhaust systems that won't break the bank are also welcome. I will need some better flow for this engine. I already have high flow cats on there.

 

I rem reading a thread where guy used RevUp engine in non revup car. Ill look for it to double check but I THINK he simply did not hook up exhaust cam sensors......but I'm only about 5% confident in my memory.

I'll search when I have more time. I have a revup engine and am always curious when folk inbreed it with the DE. Mainly in case my block gives.

Good luck! Damn I miss Austin.

 

Good luck, sounds like an awesome build! You're gunna need some more rubber out back haha

 

I want to be able to use the added bonus of having a Rev Up. Not using the sensors is an option, but I will use that if I really get stuck.

What a buddy and I came up with today was to see where the extra cam sensors route to on the Rev Up harness. It is possible to just route them on the DE harness and plug into the ECM, well... that's the theory at the moment. Now I need to find where all those cables connect to. Luckily I have the Rev Up already sitting in my garage to comb through the wiring harness.

More rubber is a definite. I have some wider rims that came with the car that I may end up using. I think they are 10 inch and 11 inch width rime. I did not like how they looked so I found a cheap set of OEM Nissan wheels to put on the Z (the ones in the pictures) which are 8.5 inch width all around if I am remembering correctly. I still have wider tires in the rear even though the rims are the same size.

 

Send me a message if you need any help with the F1, F2, F3, F102 plugs. I have both Z and G mapped out for multiple years.

 

Thanks for the offer! I will take you up on that if I end up going that route. I have developed a new plan that will keep the DE harness intact just in case (except for 2 ECM connections) but add the Rev Up functionality.

Project update:
What I have been working on is figuring out if the ECM pins are mapped the same between the two cars. Other than the missing exhaust sensors and air fuel ratio sensors, the ECM pin connections map to the same place between the engines.

The plan is to keep the DE harness and add the Rev Up sensors that are missing on the DE. I need to take the following sensor/connections from the G Rev Up harness:
F16 - Exhaust valve control Bank 1
F17 - Exhaust valve control Bank 2
F45 - Exhaust valve timing position sensor Bank 1
F46 - Exhaust valve timing position sensor Bank 2
F40 - Air Fuel ratio Bank 1
F41 - Air Fuel ratio Bank 2
*F241/F242 - Oil Temp Sensor
For some reason my air fuel ratio sensors on the Z DE harness do not have all the ECM pin connections like my service manual says they do. I think I do not have wide band o2 sensors or something.

I won't have any updates for a month or so. Another long trip planned.

*Edited

 

Finally done traveling an have had two solid weekends.

Updates:
- ECM pin mappings are the same between the 2004 350z Track Edition and 2006 G35 with REV UP
- Engine has been removed. I was able to get it out without dropping the trans. Will have to unbolt it, slide it back, and then re attach when putting the new engine in.
- Took apart the G35 harness to get the 6 sensors listed from last post.

To Do:
- Move the DE harness over to the REV UP motor
- Add the 6 senors to the harness

 

I took the DE harness and put it on the Rev Up. Then added in the Rev Up sensors that were missing.


After running all the wires, I use wire loom tape and some plastic wire loom to wrap everything up.




Now it was time to put the New To Me engine in the Z

 

Turns out, the Rev Up has an Oil Temp sensor as well. I had to wire that in last night. To correct earlier statements there are 7 sensors that had to be brought over.

 

but no oil pressure sensor, right??

 

Oh! I forgot that detail. The Rev Up did not have an oil pressure sensor. It only had an oil pressure switch (good or bad, no in between). I was able to just take off the Oil Pressure Sensor from the DE and screw it directly into the Rev Up. The wiring does not route to the ECM at all. It has its own separate circuit that wires to the cluster in the center of the dash (can't think of what is is called at the moment).

Theoretically, it should just work since I am using the Z harness.

 

Welp... No good news.

Completed since last post:
- Going shroudless and waiting for Mishimoto to ship my fans...
- Connected up enough to get it started
- Walbro feul pump to keep up with the 1000cc injectors and put fresh gas in there
- Since UpRev is down the road and the ECM already has their software, I got NATS disabled and I plan on getting it Dyno tuned there. The people at that shop are an awesome bunch of people and their dogs are chill too.

AND it cranks but will not turn over.

Even with NATS disabled the security light is on. I am going to try a few things this weekend. If I still do not have spark and cannot figure out why, I will double check the image with UpRev to make sure it was disabled. I hear the fuel pump priming when I put the key in the on position.

Other Info:
- My buddy still has the original key fob. I am going to lock and unlock the car and see if the ECM registers it (not sure of all the subsystems needed for the key fob to work, but figured it is worth a shot)
- It is not the wheel lock issue that there was a recall for
- I also saw that the CAM sensors could magically go bad on some forums, but I doubt that is the case. If I cannot narrow things down that will be on the list of things to try
- The battery is only a year old. It has been sitting for awhile but I kept a trickle charger on it. It cranks without issue.
- Check for spark
- Double check that the pump is working as expecting and getting fuel to the cylinders. I think NATS disables the fuel pump spark. So if the fuel pump is priming, then NATS should not preventing spark? (<-Shot in the dark)


If anyone who might keep up with this have any ideas of things to check, suggestions are appreciated.

 

Turns out I have no spark. I disconnected the 02 sensors and put the original ECM back in. Security light goes out, but still no spark. The o2 sensors were disconnected because they do not match between the ECMs. Other than the security light, the behavior is completely the same between the two ECMs. The fuel pump primes, cranks, but does not turn over.

I have been searching forums for things to test. Might need to make another post to crowd source some ideas.

 

No Spark Thread Here
https://my350z.com/forum/engine-and-...l#post10973280

 

Well... I cannot find any bad grounds, any more bad sensors, etc. I think it is time to through in the towel and look for a garage. Found a place called Smiley Autowerks in Kyle Texas. Once I have the radiator fans mounted and super charger installed, I will get it to the shop and go from there.

 

Still waiting on the garage to have some space. It is all back together now. Playing the waiting game.

 

That game SUX!!!!

Good Luck tho

 

Welp... I can remember. Checking this many times, but I must have been checking it wrong. I scoped the cam intake and the crank sensor. They do not look correct. Looks like the folks I talked to are right and the flywheel is in the wrong position.

 

Rotated the flywheel into the correct position. I have spark now. Just need to replace the rear wheel bearings and get it tuned.... then should be good to go.