1977 280z automatic to manual swap questions - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
User Tag List

 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 01-26-2019, 04:25 PM Thread Starter
Member
 
Join Date: Oct 2017
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
(Thread Starter)
1977 280z automatic to manual swap questions

I have an EU 4-speed 260z gearbox (74-78) and a 5-speed gearbox, unknown if from a 280z or 280zx.
I'm confused which parts fit these transmissions. I found a pressure plate, nabco master cylinder and flywheel second hand, most likely 260z. So if these things fit, I only need a clutch, .

1. Are flywheels and pressure plates from 1974 to 1983 interchangeable, is the only difference 225mm for coupe and 240mm for turbo/2+2?
2. Zcardepot sells different clutch discs and kits for a 70-74, a 75-78 and a 1975-1983. And different throwout bearing sleeves for, 70-71, 71-74, 74-78 and 75-83. Some of the year ranges do not seem to match between the different parts, so how to know the difference. What do I need?
3. And I see many conflicting posts, but do you need a manual starter?
4. How to determine which speedometer pinion I need, considering I don't know the exact year of the gearboxes?

Last edited by Peter_789; 01-27-2019 at 12:35 PM.
Peter_789 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 01-28-2019, 01:14 AM
Senior Member
 
bificus's Avatar
 
Join Date: Sep 2010
Location: SC
Posts: 1,067
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Garage
Hi Peter,

I did a swap 2 years ago on my 75. It was a lot easier because I got a whole donor car from 78. I just got 78 2+2 parts and refreshed gaskets and other worn parts. The throwout bearing sleeve I understand needs to match the pressure plate. I reused my auto starter, works fine. The one the donor had was inop anyway. The speedometer gear is matched to the differential so it should be just fine. There are small differences in the manual and auto driveshafts I reused mine due to a flange mismatch on the diff. Lastly I never found a good solution on reverse lights. I googled the #### out of it and came up on another datsun site and got a virus. Do yourself a favor and get a trans jack and drop the exhaust.

1975 280Z F54/N47 MSA 6-1 Header 2.5 Exhaust
bificus is offline  
post #3 of 9 (permalink) Old 01-28-2019, 06:20 PM Thread Starter
Member
 
Join Date: Oct 2017
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
(Thread Starter)
The FSM says the propeller shaft is only different between coupe 565mm and 2+2 865mm. The differential carrier is R180 for automatic and R200 for manual, but I don't see if they have different dimensions. Hope I don't have to replace that.

So as long as the clutch, pressure plate and throwout bearing match they fit in both transmissions? Would it be worthwhile to buy a new pressure plate, or is a 2nd hand also good (how can you check this)?
The reverse light works via the inhibitor switch on automatics. I don't know how it works exactly, but the FSM shows the wiring for manual and automatic.
Peter_789 is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 01-28-2019, 06:50 PM
Senior Member
 
bificus's Avatar
 
Join Date: Sep 2010
Location: SC
Posts: 1,067
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Garage
I had purchased a clutch kit for the turbo/2+2 just in case. The issue with the drive shaft was the flange on the diff didn't match. My car and the donor car are both coupes. Drive shaft should be ok, If you want to use 2nd hand parts have them checked out at a machine shop.

1975 280Z F54/N47 MSA 6-1 Header 2.5 Exhaust
bificus is offline  
post #5 of 9 (permalink) Old 01-28-2019, 08:19 PM Thread Starter
Member
 
Join Date: Oct 2017
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
(Thread Starter)
What is the difference between these two pressure plates btw. The first one is from zcardepot for 75-78 280z the second from a 280zx coupe, but it seems to have a ring in the middle.
Attached Images
File Type: png pressure_plate.png (771.6 KB, 11 views)
Peter_789 is offline  
post #6 of 9 (permalink) Old 01-28-2019, 09:18 PM
Senior Member
 
bificus's Avatar
 
Join Date: Sep 2010
Location: SC
Posts: 1,067
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 58 Post(s)
Garage
The one on the right has some wear! In all seriousness The one on the right is face up showing the plate, the left is face down showing the springs.

1975 280Z F54/N47 MSA 6-1 Header 2.5 Exhaust
bificus is offline  
post #7 of 9 (permalink) Old 02-02-2019, 11:08 AM Thread Starter
Member
 
Join Date: Oct 2017
Posts: 35
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
(Thread Starter)
What do you guys think of this clutch kit? Is that good enough for weekend cruising? The one from zcardepot is twice as expensive, and has 12 pins in stead of 18, so maybe stiffer?
Attached Images
File Type: png clutchkit.PNG (273.8 KB, 9 views)
File Type: png clutchkit2.PNG (141.3 KB, 8 views)
Peter_789 is offline  
post #8 of 9 (permalink) Old 02-02-2019, 11:37 AM
Member
 
crayzlair's Avatar
 
Join Date: Mar 2012
Location: NW Ohio
Posts: 67
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Quote:
Originally Posted by Peter_789 View Post
What do you guys think of this clutch kit? Is that good enough for weekend cruising? The one from zcardepot is twice as expensive, and has 12 pins in stead of 18, so maybe stiffer?
I went through a couple of stock clutches in my '76. Bit the bullet and bought a Centerforce. That was back in 1982. Still using the same clutch today, and I auto-crossed the car for over 20 years!

Larry


1976 280Z - Street

1973 240Z - SCCA Autocross F Prepared
crayzlair is offline  
post #9 of 9 (permalink) Old 02-06-2019, 12:51 PM
Senior Member
 
gr8gary's Avatar
 
Join Date: Jan 2015
Location: Nashville, TN
Posts: 145
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
I would stay away from the clutch kit there’s ever ties for $55! That sounds way too cheap. I have always had good luck with Exedy kits. Rock auto is a great place to purchase them.
gr8gary is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic shifter moves freely 280z 1977 Peter_789 70-83 Tech Discussion Forum 1 05-26-2018 10:06 AM
2 complete cars: 1977 and 1977.5 280z MasonSteele Cars for Sale: 1970-83 240Z, 260Z, 280Z, 280ZX 6 05-21-2015 12:12 PM
Automatic to Manual swap dynamic_smiler Car Talk Forum 9 03-24-2003 10:04 PM
need to swap automatic for manual trans JRHAMPTON 84-89 Tech Discussion Forum 1 07-12-2002 01:20 PM
1977 280Z (AUTOMATIC) Rick 70-83 Tech Discussion Forum 2 01-28-2000 01:42 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


Content Relevant URLs by vBSEO 3.6.1