Datsun Roadster Forum-311s.org

Ok well if you followed my trans seal saga, every seal I've tried leaks.

The yoke itself is smooth, no discernible wear or pitting. It does have some jiggle up and down when moving it.

https://vimeo.com/679304475

That leaves me with a worn output bushing on my 'rebuilt' trans. Orrr other mystery cause, maybe sloppy output shaft? Anyway...

The bushing is NLA, so I got an ATP FB-12. Dimensions are ID 1.5055 OD 1.62 OAL 1.5005

it is listed for 1968-1970 Nissan 1600 1.6L, 1968-1969 Nissan 510 1.6L but seems to be listed for roadsters too on the ATP site.

Can anyone confirm measurements???

Other questions

1) seems like an off the car job for sure...is there a special tool for removal/install? Tailshaft off and use a punch?

2) if the bushing doesnt work, anyone know of an option besides a whole new tailshaft housing?

Did you try thick wheel bearing grease on the yoke you can pack a lot in the end
It doesn't run or melt and can stop the 90 w
It's not leaking out the end of the yoke is it ?
Check the vent is open
You would want to break kleen the bushing to get the grease to adhere to the bushing too
It's harder to find the thick fiberous grease now
Wonder if the lowtemp solder would coat the bushing to build up

redroadster wrote: Fri Feb 18, 2022 6:28 pm Did you try thick wheel bearing grease on the yoke you can pack a lot in the end
It doesn't run or melt and can stop the 90 w
It's not leaking out the end of the yoke is it ?

yes I had thick grease all in the seal. I never tried like packing the yoke with it figured it would just get forced away at high rpm.

it leaks past the seal lip, into the yoke cover and then down.

the end cap of the breather moves freely - cant otherwise check it without having the trans out.

So the deal is many other automakers have tools to pull and replace the output bushings for the driveshaft. Especially with 4X4 vehicles because of the wear associated with lift kits and the bushings. It might be that a bushing exists and tool to remove and replace it. You might want to talk to a transmission shop and see if they can fix it. Dave

If all else fails.....NOS Housing

https://www.ebay.com/itm/125134627672?h ... SwnRFh~q0O

I have not tried it yet, but Steve Pettersen, who is an expert roadster transmission rebuilder, recommends the following: coat the seals and surrounding metal with Permatex Anaerobic Gasket Maker to take care of any imperfections in the sealing surfaces and prevent leaks. You might want to give that a try. Good luck!

Mike

mikeb wrote: Fri Feb 18, 2022 10:26 pm I have not tried it yet, but Steve Pettersen, who is an expert roadster transmission rebuilder, recommends the following: coat the seals and surrounding metal with Permatex Anaerobic Gasket Maker to take care of any imperfections in the sealing surfaces and prevent leaks. You might want to give that a try. Good luck!

Mike

did that

devo wrote: Fri Feb 18, 2022 9:32 pm If all else fails.....NOS Housing

https://www.ebay.com/itm/125134627672?h ... SwnRFh~q0O

yeah it's on my mind. could get pretty damn expensive for a 4 speed if I need a new reverse switch too. couldn't figure out what version it was (there are 3 according to carpartsmanual)

I'd recheck the vent tube tiny baby spiders seem to luv the tube to hide in a trans or other blockage (blow compressed air thru it / with the fill plug out ) and that pushes it out , also if the yoke has a wear groove you need to avoid it riding in the groove I've seen a 2nd seal, buytal rubbered to the inserted seal that stopped a leak