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 06-29-2016, 02:41 PM   #1
Milenko2121
 
Join Date: Jun 2013
Location: California
Age: 32
Posts: 14
Trader Rating: (0)
Milenko2121 is an unknown quantity at this point
Feedback Score: 0 reviews
What transmission is this?

I've been trying to find a rebuild kit for my S14 transmission as I'm planning on doing an overhaul later in the year due to transmission whining at idle(goes away with clutch pressed in) it doesn't grind at all just noisy whine that started 6 months ago and hasn't changed since.

I am reading a lot of conflicting information online as to which kit I need to overhaul it.

I originally had the S13 transmission in my L28ET 280z (I had my bell housing machined to fit), but 1st and 2nd grinded so I purchased a used SR20DET transmission for $100, and was surprised when I popped it open.

I'm told all S13/S14 SR20DET transmissions are the same, but I have two in front of me that looked identical until I popped the bell housing off.

The gear ratios are the same on both
3.321
1.902
1.308
1.000
0.759

However, 3rd gear is physically larger in the S14 version and also has a much beefier shift fork.

I'd appreciate the help figuring this out, and also to possibly stop the "all S13/14 transmissions are the same" argument.

Thanks,
Mil
Attached Images
File Type: jpg 10966738_10204636674811060_66923580_n.jpg (51.7 KB, 61 views)
File Type: jpg 10965194_10204636674851061_512605352_n.jpg (50.0 KB, 59 views)

Last edited by Milenko2121; 06-29-2016 at 03:13 PM..
Milenko2121 is offline   Reply With Quote
Sponsored Links
Old 08-05-2016, 05:23 PM   #2
Milenko2121
 
Join Date: Jun 2013
Location: California
Age: 32
Posts: 14
Trader Rating: (0)
Milenko2121 is an unknown quantity at this point
Feedback Score: 0 reviews
bump
Milenko2121 is offline   Reply With Quote
Old 09-07-2016, 03:00 PM   #3
Milenko2121
 
Join Date: Jun 2013
Location: California
Age: 32
Posts: 14
Trader Rating: (0)
Milenko2121 is an unknown quantity at this point
Feedback Score: 0 reviews
bump
Milenko2121 is offline   Reply With Quote
Old 08-17-2017, 12:56 PM   #4
Milenko2121
 
Join Date: Jun 2013
Location: California
Age: 32
Posts: 14
Trader Rating: (0)
Milenko2121 is an unknown quantity at this point
Feedback Score: 0 reviews
round 2
Milenko2121 is offline   Reply With Quote
Old 08-28-2017, 01:57 PM   #5
gaz_moose
Zilvia Member
 
Join Date: Mar 2008
Location: engerland
Posts: 242
Trader Rating: (0)
gaz_moose is an unknown quantity at this point
Feedback Score: 0 reviews
the one with open bearings is off a 180sx / silvia S13
the one with sealed bearings is off an s14 / s15

the s14 box will have syncro's for reverse where the s13 one will be more complex and probably have a chewed up reverse gear.

if its a late s14 / s15 box then it will have a 'trap door' setup on the centre plate whereas the s13 box will just have loads of holes allowing oil to slosh backwards when accelerating.
gaz_moose is offline   Reply With Quote
Old 11-01-2017, 08:32 PM   #6
Milenko2121
 
Join Date: Jun 2013
Location: California
Age: 32
Posts: 14
Trader Rating: (0)
Milenko2121 is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by gaz_moose View Post
the one with open bearings is off a 180sx / silvia S13
the one with sealed bearings is off an s14 / s15

the s14 box will have syncro's for reverse where the s13 one will be more complex and probably have a chewed up reverse gear.

if its a late s14 / s15 box then it will have a 'trap door' setup on the centre plate whereas the s13 box will just have loads of holes allowing oil to slosh backwards when accelerating.

Appreciate the help, thank you. I had been confused about this for a bit.
Milenko2121 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 04:26 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
vB.Sponsors
Copyright © 1998 - 2019, Zilvia.net™