as title says its stuck in 3rd but feels like neutral, its an a12 in a datsun 1200 ute with a 4 speed need help ASAP

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tradesafe: Dazda, 2ndTimeStanza, Qeleh, big mac, hatchman


1979 Datsun Sunny Wagon 13b Turbo conversion: http://ozdat.com/forum/viewtopic.php?f=60&t=28890

possible sheared roll pin in selector fork.

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"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

Treating it a bit too harshly?
With some boxes, ie racing, it's an idea to double roll pin the selectors to the rods.

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Yep, i race a Datsun, and I drive a truck, sometimes I get confused, and then the truck goes fast, and the Datsun gets a lot of boxes shoved into it. AWW GEE

It just poped right out and works fine now

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tradesafe: Dazda, 2ndTimeStanza, Qeleh, big mac, hatchman


1979 Datsun Sunny Wagon 13b Turbo conversion: http://ozdat.com/forum/viewtopic.php?f=60&t=28890

No doubt it will do it again. We used to get a false neutral. I think the guide holes through the extention housing get worn and allow the selectors to skew. You could either get another extension housing and possibly even change it in the car, our ideally pull the gearbox out and get the guides sleeved. We used to have the double roll pins too but never had a prob with them anyway.

Once it's happened once, it will do it again.

Start keeping an eye out for a replacement box and/or plan to rebuild yours if you are attached to it for some reason.

Yeah we are aware, its not my car but it happened while i was driving so i said if pay for a new gearbox

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tradesafe: Dazda, 2ndTimeStanza, Qeleh, big mac, hatchman


1979 Datsun Sunny Wagon 13b Turbo conversion: http://ozdat.com/forum/viewtopic.php?f=60&t=28890