T56 Mounting on 280zx 2+2

[HZ Ryder]

I reciently moved into the next phase of has been a very intresting journey. I need to mount a T56 into my 79 280zx. I am using the JTR installation kit which unfortunately fell short on delivery. I say this because I just found out that they don't make the mounting hardware for a T56. Unfortunately the kit appears to be well made as I have it but the T56 setup is slightly different. Soo my question is can I move the JTR trans mount back to accomodate the difference and use spacers to compensate for the drop or do I need to go out and by to pieces of metal and drill them out to make this work. This is frustrating as you would think that a popluar trans would be covered by these people... THe answer I got was there isn't a demand to make these parts... Maybe I am missing something but what are they making, they are cutting to pieces of metal, drilling holes and providing maybe 2.00? of bolts, washers and nuts.... mind you I am being kind and assuming they would provide grade eight bolts..

 

Sorry I am not a machinest, but it looks like I have to become one so I don't have nor do I want to spend more money on byung equipment that I have little use for..

 

Help..

 

Thanks in advance

[Mike kZ]

Hard to say without pics, but I would modify the trans bracket, and/or the tunnel. Just make sure your drive shaft angles are correct.

[HZ Ryder]

Hard to say without pics, but I would modify the trans bracket, and/or the tunnel. Just make sure your drive shaft angles are correct.

 

 

Thanks for the response... I may have idea on how to address this SNAFU.. Thoughts as you, I hope can see from the stock pics which I am using from JTR for illustration..

 

- Insted of mounting the bracket where they recommend, I would just measure off of where they say to mount the harware to the location that the T56 would need, and drill mounting holes there and mount the JTR bracket there. I am enclosing drawings as reference to aid in your assesement.

 

- The original (datsun) mounting points were cut off as per JTR insructions and the rear of the mount would attach to the lip of the old mounting point. They say for added strength, but that would old cover 1/2 of the holes of the new mounting bracket.. By mu moving the mounting points back, I would lose this "benefit" however I would like to think that the 7 bolts (4 on one side and 3 on the other) going through some think steel and through the trans tunnel would be strong enough to deal with the torque and trans movement.

 

- Now my oppology upfront, as this is a first for me... The instructions that came from JTR and their book, which are the same thing, are not in my opion clear. I got the engine setback thing... but I still have not gotten my head around the other two, yet extreamly important points...

- I was under the impression that the back of a transmission would need to be in direct alignment with the rear-end, the angling of the engine towards the passenger side would change the angle of center.... would this not impact the longevitiy of the propellar components and or cause vibration??

- what is the engine / trans angle and how do you get it

- what is the right trans and engine angle

- How would I messure the new propellar shaft length

 

P.S. I am also enclosing text from instructions for review

 

T56 TRANSMISSION CROSSMEMBER

If you want to install a T56 transmission, a special cross member is required, which is shaped to accept the T56 transmission.

The T56 transmission has a different mounting position than a T5 or 700-R4. This is a prototype transmission mount. The mount is positioned 1-1/8" lower, and 2-1/4" further back than a T5 or 700-R4 transmission.

The transmission cross member is mounted below the transmission ears due to the different mounting requirements.

 

JTR-T56 Pic.bmp newmount.bmp trans-distance.bmp

 

Thank you any support you could give...