Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > S Chassis

S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


Reply
 
Thread Tools Display Modes
Old 06-22-2022, 12:03 AM   #1
Edyz7s
Leaky Injector
 
Edyz7s's Avatar
 
Join Date: Feb 2014
Location: California
Age: 28
Posts: 101
Trader Rating: (0)
Edyz7s is an unknown quantity at this point
Feedback Score: 0 reviews
s14 Ruined transmission because of incorrect driveshaft?

I have a 1995 240sx s14 that was converted to manual. I did not do the conversion but i've been owning like this for 2 years now. I believe I have a s13 transmission since it does not have the s14 crank position sensor on top of the bellhousing. Also i believe it has the auto ABS driveshaft since it has ABS and its pretty long that i think it touches the end of the transmission (but not enough that it grinds on it hard). So ever since then it would leak around the shifter. I first replaced the output shaft seal thinking that was it but continued leaking. Recently i replaced the shifter gasket cause it had only RTV. So with both seal (replaced less than 10k miles) and gasket, it is still leaking transmission fluid.
I'm concluding from what I assume, having the wrong size driveshaft, its causing it to leak fluid from the output of the transmission.
But this is where it got worse.
Recently I installed solid subframe risers from Gktech because i am low. Doing so it helped greatly with my suspension and the geometry of the car. But I believe it made the drivetrain worse. It only happened on 2 occasions after installing the subframe risers, where it seems like the differential locked up or something. When I would come to a stop on neutral, something in the rear would lock up causing it to shake the car. I wouldn't think it would be the ABS because even after i let go of the brake it would shake under 5 mph. I just feel its all connected to the driveshaft being incorrect for my s14.
But my main question is, if I were to have driven a lot with the incorrect driveshaft, can it ruin the rear end of the transmission? I drove around 50 miles on the freeway recently and after that it left a good amount of transmission fluid underneath the car and it's never done that before.

Apologies for the long post, just trying to be thorough.
Edyz7s is offline   Reply With Quote
Sponsored Links
Old 06-22-2022, 08:49 AM   #2
AKADriver
Post Whore!
 
AKADriver's Avatar
 
Join Date: May 2002
Location: Springfield, VA
Age: 42
Posts: 3,473
Trader Rating: (1)
AKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond repute
Feedback Score: 1 reviews
I don't think an auto driveshaft would even fit. IIRC the yoke is a different diameter and it wouldn't even go in. You'd have noticed the obviously different yoke when replacing the seal. This is an auto S14 shaft:



And this is a manual shaft:

AKADriver is offline   Reply With Quote
Old 06-22-2022, 09:39 AM   #3
Edyz7s
Leaky Injector
 
Edyz7s's Avatar
 
Join Date: Feb 2014
Location: California
Age: 28
Posts: 101
Trader Rating: (0)
Edyz7s is an unknown quantity at this point
Feedback Score: 0 reviews
Okay so I don't have an auto driveshaft.
I remember it looking like the manual driveshaft when i took it off. But i also believe i have a non-abs driveshaft because it sits super close to the transmission, cant even see the yoke from the outside.
Edyz7s is offline   Reply With Quote
Old 06-22-2022, 12:46 PM   #4
AKADriver
Post Whore!
 
AKADriver's Avatar
 
Join Date: May 2002
Location: Springfield, VA
Age: 42
Posts: 3,473
Trader Rating: (1)
AKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond reputeAKADriver has a reputation beyond repute
Feedback Score: 1 reviews
That's possible. Also shoving a non-ABS driveshaft into place with an ABS diff would ruin the center support bearing which would exacerbate these kinds of problems.
AKADriver is offline   Reply With Quote
Old 06-22-2022, 03:44 PM   #5
Edyz7s
Leaky Injector
 
Edyz7s's Avatar
 
Join Date: Feb 2014
Location: California
Age: 28
Posts: 101
Trader Rating: (0)
Edyz7s is an unknown quantity at this point
Feedback Score: 0 reviews
I didn't think the center support bearing could be a fault because it literally sits where it should be. But that could be possibly what i'm hearing when it fails randomly.
So regarding replacing the seal once, because the yoke is shoved in entirely, it can cause it to leak still?
Edyz7s is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 03:59 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net