14 hours ago, inline6 said:

There seems to be quite a large amount of movement of the new transmission yoke inside the tail of the transmission. I am concerned that the bushing in the tail shaft is excessively worn.

I'd fix this first. Besides the bushing, the fit of the splines should control play also. Are you sure that you have enough engagement?

15 hours ago, inline6 said:

I'll need to check for a wear specification. The 240SX transmission I the one thing on this whole car that I did not fully rebuild! Ugh!

Can't tell where the seal is riding in your picture but here is a picture of an old early 240Z shaft I picked up that had a groove from a worn seal, for reference. Gives an indication of factory engagement. The wear pattern in your picture is very weird.

No, I am investigating my transmission rear bushing. I have two of these on hand I bought years ago:


https://sales.omegamachine.com/Nissan_FS5W71C_Extension_Housing_Bushing_p/71411.htm

I slipped one onto the old prop shaft yoke and it fits nicely. Not loose and not tight. I will have more time later tonight to measure ID and the OD of the new yoke. I'd say the new yoke is deflecting a good 0.030" to 0.040" up and down (total) inside the tail of the transmission right now.

I am thinking I may need to pull the transmission tail section out of the car to do this bushing replacement.

Edited May 6May 6 by inline6

I wouldn't want to split the transmission in the car. I would rather have the whole unit on the bench

IMHO, That is not a good idea moving forward. You won’t be able to access all points of concern if it’s not on the bench. I personally have gone through a couple of the “B” series and access is critical. You’re already half way there removing the shaft. Not to mention you’re going to have to rotate the tail shaft back and forth to remove and install. Personally I wouldn’t do it in the car. My 2cents.

Yeah I agree. So I took the day off today so I have the time to remove the transmission and replace the rear tail shaft bushing. Headed out to the garage shortly to start on that.

On 5/6/2025 at 2:07 PM, Zed Head said:

Can't tell where the seal is riding in your picture but here is a picture of an old early 240Z shaft I picked up that had a groove from a worn seal, for reference. Gives an indication of factory engagement. The wear pattern in your picture is very weird.

The seal was riding here:

Those wear marks indicate where the yoke was rubbing up against the bushing. Those weren't there when I installed the prop shaft.

I confirmed the extension housing bushing was worn, allowing the main shaft and yoke to move excessively. Unsure if the prop shaft was balanced properly when it was shortened. The local place I took it to for balancing (after swapping in the new yoke) said it looked like it had not been balanced. Additionally, the weights they welded onto it were not tiny. So, perhaps the prop shaft was way out of balance and that is why this happened.

I was able to get the transmission out on Thursday, and get the rear housing off, replace the bushing, and get it back together. But, I wasn't able to get the transmission back in the car. Unfortunately, my wrist got injured in a soccer game last night, so I won't be able to get the transmission in for a while.

Edited Sunday at 12:58 AM4 days by inline6

4 hours ago, inline6 said:

replace the bushing,

How bad was the old one?

I have it and will check the ID (it is no longer installed) and compare it to the spare new one I still have on hand.

I won't be out in the shop much until my wrist heals some. The end of my radius bone is broken (at the wrist) and my pinky is broken too. Was definitely unfortunate in the game on Friday!

Are you a keeper? All of my injuries were ankle, knee, nose, eyebrow, or jaw. And one AC joint. And a groin.

Yes, I am a keeper! I had to come out to try to block an open shot. Two of the other team's players briefly competed for who was going to take the shot, and I guess one of them went straight through me. I say guess, because I am unsure what happened, but I did get the save :)

For me, each wrist has now been broken - this is the second time for my radius bone in the left arm. The first time, I got a cross shaped break in it when the ball shot from 10 feet away hit nothing but my left and hammered it toward the bottom of my forearm. Continuing :) -- Both pinkie fingers, one middle finger, and a few front, as well as one back rib. I have torqued both sets of shoulder ligaments several times, but they are quite good now. And, I got nine stitches (one internal, 8 external) at the left eyebrow about 8 months ago.

That is pretty much it. Many years were injury free, but not so much in this last 8 months. I didn't think I would still be playing competitively at 56, but I still really enjoy it. I think I am nearly ready to stop playing in Over 30 now however. The stitches and these most recent bone breaks came from playing in that league.

Edited 18 hours ago18 hr by inline6

Soccer's a gamble. I felt lucky to have made it through the years with none of the major long-term injuries. I did have to do some PT on a knee. My doctor had been a college athlete and had the "suck it up and take some Advil" attitude. So I went in to weekend warrior mode and tried to tough it out. He sent me to PT when I went back a month later and showed him that the thigh on the injured leg was about 2/3 the size of the good one. The PT shop owner used to do the Cleveland Browns football team. Got me straightend up pretty quick but it still wouldn't bend as far as the other one for about three years.

And the tough-it-out doctor was afraid of blood. Later, after the knee, he refused to remove the stitches in my chin because the tails were cut too short (forgot to mention the chin. And the broken collar bone.) and there would be blood if he had to dig them out. I had to go to the drug store and buy some tweezers and pointy scissors to dig them out myself. There was blood.

Good times.