VH45DE wiring question

[450Z]

I am in the middle a project car that will marry the best of the old Datsun cars with the best of the new Nissans engines. I now have a VH45DE mounted to a T56 6 speed trans which is now mounted in a 1972 Datsun 240Z. I will be at the point of trying to start the engine in the car soon. Some time ago I bought what was supposed to be a complete 92 Q45 factory shop manual. After I got it I realized that it was missing the engine chapters and the last pages which have the electrical pull outs! Isn't Ebay great!I have since downloaded the manual for a 94 Q45. Does anyone know how different the wiring would be these 2 years? How accurate would the 94 wiring diagram be if used on a 92 VH45DE? Any help would be greatly appreciated.

[elwesso]

Wow... Pretty cool project... i'll get the semantics out of the way so that we can start prodding you with questions about your swap..

The engine wiring is pretty much the same throughout the years.. Main thingwiring wise that changed was the addition of the LAN system in the 94s, but that does certainly not effect you at all...

The bottom line is, between 90-95 Q45, the ECU's are all compatible within the years, so that means the pin-outs are the same. I currently run a 1991 Q45 ECU in my 1994 Q45t, and its just fine... So that being said, i think probably the only difference is 2 things: The wiring listed in the FSM may have different colored wires listed (I kinda doubt it though), and some of the connectors are different (meaning just a different design, still the same wires).

The cliff notes: I think if you follow the 94 Q45 wiring diagram you will be just fine...

Now, where can we get that adapter plate for the 6 speed for the VH45?

[heywier427]

Wow... Pretty cool project... i'll get the semantics out of the way so that we can start prodding you with questions about your swap..

The engine wiring is pretty much the same throughout the years.. Main thingwiring wise that changed was the addition of the LAN system in the 94s, but that does certainly not effect you at all...

The bottom line is, between 90-95 Q45, the ECU's are all compatible within the years, so that means the pin-outs are the same. I currently run a 1991 Q45 ECU in my 1994 Q45t, and its just fine... So that being said, i think probably the only difference is 2 things: The wiring listed in the FSM may have different colored wires listed (I kinda doubt it though), and some of the connectors are different (meaning just a different design, still the same wires).

The cliff notes: I think if you follow the 94 Q45 wiring diagram you will be just fine...

Now, where can we get that adapter plate for the 6 speed for the VH45?

now thats the question of the day!

[450Z]

I have had another Q45 owner ask me if I could make him one. I mentioned that it took alot of hours to make and I would have to give it some serious thought to making another one. Not to mention the custum clutch and slave cylinder. As I recall the last I heard from him was when I asked him if there was enough room to put a clutch pedal assembly and master cylinder in the car.What do you think?

[Raxephon]

As I recall the last I heard from him was when I asked him if there was enough room to put a clutch pedal assembly and master cylinder in the car.What do you think?

There is room for a clutch pedal and a master cylinder, its "snug" but there's room.

There is a possibility of interference from the parking brake though.

What kind of metal did you decide to use for the adapter plate?

How thick a plate did you decide to use?

This wouldn't be a pic of yours would it?

[elwesso]

There is room for a clutch pedal and a master cylinder, its "snug" but there's room.

There is a possibility of interference from the parking brake though.

What kind of metal did you decide to use for the adapter plate?

How thick a plate did you decide to use?

This wouldn't be a pic of yours would it?

You will have to remove the parking brake, 100% for sure on that...

[maxnix]

I now have a VH45DE mounted to a T56 6 speed trans which is now mounted in a 1972 Datsun 240Z. .

Guess you know about the chain guide issue? Might want to read about what T-3 does to rehabilitate JDM take outs before you nestle that baby into the 240Z chassis.

Please keep us posted on your project.
Modified by maxnix at 10:14 PM 3/21/2006

[450Z]

There is room for a clutch pedal and a master cylinder, its "snug" but there's room.

There is a possibility of interference from the parking brake though.

What kind of metal did you decide to use for the adapter plate?I used 6061-T6 aluminum.

How thick a plate did you decide to use?It worked out that 3/4" was about right. The clutch and related shim got everything in alignement. I used a Stage III Z32TT clutch that I had the GM spline put in the clutch disc.

This wouldn't be a pic of yours would it?

Yup.If you go to my Car Domain website you might get some appreciation for what is involved in making this happen. http://www.cardomain.com/ride/563982

[maxnix]

I wonder if the under drive pulley will drive the alternator sufficiently to drive all your electric accessories? I am sure it can be done if you can fit a larger output alternator.

[450Z]

I sized it to be the same as my Z32TT underdrive pulley. You also have to remember that this is only a 1972 240Z. All it has to power up is lights, wipers, gauges, heater fan, electric water pump, rad fans and maybe a radio. It's not an all encompassing car like the Q with active susp, abs, traction control, dual ash trays, light in every oriface, etc ...........

[maxnix]

I thought you were using electric steering boost, electric fans and water pump?

[450Z]

Thats right. But it still does not add up to anywhere near the max output of the alternator (looks like about 221Amps?). My TT with the under drive pully had no problems driving the entire car and what ever speed or load the engine was at.

[450Z]

Thanks, I have read about that issue. At this point I just want to get this thing running, then I'll work on the the details. Is there anyway of knowing if the guides have been changed on this engine?On a similar topic do you know if anyone has a parts engine that I could get a camshaft encoder for my 92? Mine was slightly damaged in the parts car I got it from. It works, but it doesn't look like it will last long.Thanks.

Guess you know about the chain guide issue? Might want to read about what T-3 does to rehabilitate JDM take outs before you nestle that baby into the 240Z chassis.

Please keep us posted on your project.

Modified by maxnix at 10:14 PM 3/21/2006

[Raxephon]

Thats right. But it still does not add up to anywhere near the max output of the alternator (looks like about 221Amps?).

Should be about 110 Amps.

On a similar topic do you know if anyone has a parts engine that I could get a camshaft encoder for my 92?

Huh?Whats a camshaft encoder?

[450Z]

On most cars there is a crank angle sensor to allow the ECCS to control the inj and ign. On Nissans they are mounted on the drivers side exhaust camshaft.

[Raxephon]

On most cars there is a crank angle sensor to allow the ECCS to control the inj and ign. On Nissans they are mounted on the drivers side exhaust camshaft.

Hmm, first time I've heard a Crank Angle Sensor (CAS) called an encoder.

PopPop might still have one zerothread?id=158292

9th one down.

[maxnix]

Thanks, I have read about that issue. At this point I just want to get this thing running, then I'll work on the the details.

The next crank might be the last. one never knows. Not a gamble anyone experienced with the issue would take a bet on. Lots of 1990-1993 owners have found their guides in pieces, and there is no better time to rehabilitate the engine than when it is out.

Good luck.