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What gearbox did I just buy?


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#1 Mikey

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Posted 13 October 2013 - 06:46 PM

I bought this gearbox yesterday for my 260 auto conversion
It was advertised as a 260z gearbox
But The bell housing says L4 NMCA
And NMCA 1# on the gearbox.
Just wanting to make sure it's not a s13 box or something.
Thanks
Mikey


#2 1600dave

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Posted 13 October 2013 - 07:03 PM

I have a box with the same markings fitted to my old 1600. It came out of a Bluebird.

I believe NMCA = Nissan Motor Company Australia and L4 = L-series bellhousing, so could be out of anything aussie-made and fitted with an L-series engine (ie not a zed)

#3 Mikey

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Posted 13 October 2013 - 07:17 PM

Hmm.. So I guess it won't work without changing the bell housing and mounts?
Maybe I'll post some pictures after I've cleaned it up if it helps to identify

#4 Riceburner

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Posted 13 October 2013 - 07:40 PM

Take some measurements of the length, aren't the L4 boxes shorter than L6?

#5 Mikey

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Posted 13 October 2013 - 08:02 PM

No it is the longer box.. 775mm I think.

#6 1600dave

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Posted 13 October 2013 - 08:02 PM

If its an l-series 5 speed, it will bolt up to the rear of an L26 no dramas.

The only 5 speeds that are shorter are Stanza and R30 skyline. 180B SSS and Stanza 5 speeds are a lighter-duty box (also have a "dogleg" shift pattern). The only real differences between a bluey 5 speed and a 260Z one is the ratios and synchro type.

#7 Mikey

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Posted 13 October 2013 - 08:43 PM

ok.. so do you think the mounts will be the same?
and also am i able to but the standard 225mm 260z clutch
thanks again for the info..

#8 dat2kman

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Posted 13 October 2013 - 10:04 PM

You'll need a flywheel, four cylinder L20B are 200 mm diam clutch, six cylinder L can be 225 mm or (rarer) 240mm
The box you describe is a common Lseries 71B type box, fitred to Bluebirds, 1970-1980's Skylines, later 260/280 z or zx's.
Your crossmember should be fine, the auto mount may be different to a manual box type.

#9 NZeder

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Posted 14 October 2013 - 05:26 AM

I would have thought the easy way to tell is sandwich plate between the 2 halves of the gearbox. A 71 series (be it B or C - excluding the A as that is 3 piece design) has a steel plate between the 1/2s but the 63 series (aka 4 cylinder box) does not have a steel sandwich plate.




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