VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

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qwik510
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VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby qwik510 » 02 Jul 2014 15:23

I just happened upon a 1984 300ZX that was super clean and low mileage (53,000) but it got wrecked. It was a lady owned, original paint, garage kept car. The damage was not to the engine or drivetrain and the engine still starts and runs strong.

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So it got me thinking about using it to swap into a wagon.

Anyone out there done this swap? Will the transmission fit into the tunnel without extensive modifications? Are these transmissions good or do they have problems? Anything else that would cause any major issues? I would use a 200SX intake and exhaust manifolds and keep the 300ZX ECU and wiring.

Let the discussion begin.

Thanks!
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David
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datzenmike
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby datzenmike » 02 Jul 2014 20:00

E4N71B, just a whisker longer than the earlier 3N71B (maybe 32.5") The 510 autos were 26" sooooo....

The E4N71B has extra clutches and discs in it and is quite heavy duty. It also is a true 4 speed automatic with a 0.686 over drive. Fourth gear can be locked out by a switch on the shifter.

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Here's a picture of the one I had from an '84 Maxima...

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Below it is an ordinary 31.5" 3N71B 3 speed. The L4N71B was about an inch longer. You can see the fourth gear case mounted between the removable bell and the remainder. It has the stubby tail end just like the 510 autos but it's about 6 1/2" longer.
Last edited by datzenmike on 03 Jul 2014 22:05, edited 1 time in total.
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qwik510
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby qwik510 » 03 Jul 2014 04:10

Thanks Mike. You always amaze me with your knowledge of these Datsun Transmissions,

So it being longer is no big issue. Shorten the driveshaft, modify the shift linkage to fit, looks like it is not too fat so maybe just a bit of massaging of the trans tunnel in a few areas as long as the placement of the engine is not too high.

Any other issues anyone knows of?

Thanks,

David
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David
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icehouse
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby icehouse » 03 Jul 2014 07:22

I wired a VG car that once had an auto in it. That silver wagon that used to be Hill Billy's, the one Chumpstone bought. It had a giant tranny tunnel and that was the story behind it. Someone originally had a VG auto swapped in it. I would ditch the auto and find a manual box for ease of installation.
I liked Hainz better...... Can we trade back?

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JordanTr
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby JordanTr » 03 Jul 2014 10:02

71C from a Z31NA behind the vg would fit nice. T5 or R30a would be larger and probably be a tight fit in the tunnel.
Jordan | '72 2 door KA project | '94 240sx RB26DETT | '97 Silvia RB25DET | '90 Audi 90 Quattro 20V (DD)

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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby icehouse » 03 Jul 2014 13:57

Yeah I would do the 71C it doesn't need a tougher tranny in a 510 so no need for the stronger units.
I liked Hainz better...... Can we trade back?

qwik510
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby qwik510 » 03 Jul 2014 14:26

icehouse wrote:Yeah I would do the 71C it doesn't need a tougher tranny in a 510 so no need for the stronger units.


According to info on Z31.com, All automatic Z31s used the 4N71B transmission.

What's the difference between the 71B and the 71C?
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David
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JordanTr
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby JordanTr » 03 Jul 2014 19:32

The 71c is the same 5 speed that's behind ka/ca/sr and vg NA. It is a manual trans just to clarify.

See http://www.az-zbum.com/information.transmission.shtml
Jordan | '72 2 door KA project | '94 240sx RB26DETT | '97 Silvia RB25DET | '90 Audi 90 Quattro 20V (DD)

datzenmike
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby datzenmike » 03 Jul 2014 22:08

qwik510 wrote:
icehouse wrote:Yeah I would do the 71C it doesn't need a tougher tranny in a 510 so no need for the stronger units.




What's the difference between the 71B and the 71C?



Different type of shifter and linkage. About twice as strong as the B.
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby qwik510 » 04 Jul 2014 05:34

Ok, so I am not sold on the auto swap but will still consider it since this car has a low mileage, well maintained drivetrain. I will also keep my eyes open for a manual trans and flywheel in case I decide to go 5 speed with this. I have driven a n/a Z31 with auto before and think this drivetrain would be nice in a wagon. Not superfast for sure but a nice cruiser and good on the highway with the overdrive 4th gear. I think the 3.90 rear in the wagon would wake it up a bit too over the 3.7 the Z31 has.

Being that my projects move much slower these days, this will likely not get moving for a while.

Thanks guys!
Enjoy The Ride!
David
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bertvorgon
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Re: VG30 with Auto Trans into a 510 Wagon - Anyone Done It?

Postby bertvorgon » 04 Jul 2014 05:50

Is this the one....
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