On 10/20/2018 at 3:26 PM, Gav240z said:

Which might explain why shifting to 5th always felt strange compared to rowing through the first 4 gears.

Yeah , I have never driven FS5W71B , but I can imagine. 5th is one way operating gear , I mean it does not have “ down shift “ , this makes the fift gear less likely worn out than the other gears . So Nissan remain the Porche type synchro for the fifth gear ? 

Kats

FS5C71A has big two nuts for securing the fifth gear , this design is a cause of common trouble of surging the gear and the hub by the big two nuts become loose.

Mr . Kawashima has been rebuilding so many Nissan transmissions , he puts a single big nut with special securing method for the fifth gear of FS5C71A If customers want it . 

Also he recommends using a 71B upgraded folks , double sealing for the control lever etc . 

He offers me FS5C71A with all the Warner synchro modification, I think it will be very nice but , I just like the original at the moment.

Kats

These two FS5C71A rebuilt by Mr.Kawashima , one is in my Z432 and the one is taking a rest after driving a few thousand kilometers.

I checked the big two nuts , they are rock solid ! Mr. Kawashima tightened them properly. 

Kats

I'm admiring Mr.Kawashima's rig for working on the transmission, let alone his work.

Edited November 2, 20186 yr by SSS-S30

Great transmission pictures, Kats!  Thanks

Yeah, I liked that stand too.

I also like the double staked nut. It looks like he added a set screw to the nut. Staked the edge of the nut and then staked the set screw as extra insurance. That's what experience will do for you.

On 11/3/2018 at 1:50 AM, kats said:

Yeah , I have never driven FS5W71B , but I can imagine. 5th is one way operating gear , I mean it does not have “ down shift “ , this makes the fift gear less likely worn out than the other gears . So Nissan remain the Porche type synchro for the fifth gear ?

I will trade you a drive of a 71b gearbox, for a drive of an S20 powered S30z? ?

Again thank you everyone, Mr . Kawashima will be so happy when he see these comments .

The reason why I took off the #1 FS5C71A

just after a few thousand kilometers,

was I wanted to have rotations  between these two perfectly rebuilt 71A .

And also me and Mr. Kawashima both were curious about how the big two nuts stay after a couple thousand kilometers usage. We will check it again in next few thousand kilometers. Also I want to see how the synchros are getting worned out .

Gavin , I would love to ! You can visit me anytime and you have to determine what is the Z432 and what is the 240ZG , also the automatic Z with A/C  and the 4speed with 3.364 Z by driving them in your hand .

All of my cars are daily driver , you can test the wiper and the rear glass defroster in a heavy rain , and see the how “ parking lights “ and “ passing lights “ work at night .The aerial mast and the 8 track FM pack make you feel good . 

I wish I could open a cafe with Zs , for everyone who wants to see and feel the original Zs  just like back in 70’s .

Kats

 

Edited November 4, 20186 yr by kats

Today I did some work on the S20, Japan is now nice but little bit chilly in the morning and evening. I adjusted carbs at an airport parking lot before my flig?ht

The carbs were summer set up , I was hoping I set for autumn, but I tried not to touch a lot . I felt I must stay with Mr . Watanabe ‘s tuning . My work is not perfect , I am just an amateur . 

Kats

 

Edited November 7, 20186 yr by kats

Hi , two cars comparison.

Both are 1972 model , and survivor, . They are not restored , but have had been well taken care of from original owners.

As you guess and see both , the orange is nicer than the maroon . California climate? Maybe , but this maroon is keeping very good condition as spending its life in humid Japan .I realized we can keep our car like this if we take care of our car very well even in Asian countries.

 I think the difference came from “ history “  of each cars. The maroon had some scratches on the left hand front fender and door , and little bit under the left hand rear bumper , near the muffler. The orange did not have such injuries. This makes maroon looks inferior of its exterior condition to the orange, the repair job at that time ( 1973 and after ) was not good  . But I like its history,  then It makes me feel difficult to decide remain as it is , or paint it like new with whole new parts which I have stored.

Also the orange still has complete carpet and jute set , even each one has a paper stamp of quality inspection. The maroon is missing two front jute set , all the others are remained with the car . Tools , wheels, hubcaps , and speakers

, seats , these hard to keep things with cars are original.  I can compare one by one , the one has spent its life in the US , and the other one has spent its life in Japan . Some parts are looked identical of its condition, but some parts are not the same , it is fun to guess what made these parts looked different. 

And both have a lot of receipts from the begging ! 

Kats

 

 

Edited November 14, 20186 yr by kats

Some pictures 

Kats

 

Edited November 14, 20186 yr by kats

@kats

 

Here is a nice solution for keeping wheel-to-hub nice: Anti-seize

 

The salt on the roads here can bond the wheel to the hub (especially if hub-centric). 

 

For a classic liek yours, brushing a light coat of anti-seize on the hub surface reduces/hides rust. 

 

I always put on the studs too but others do not.

 

Below is an example of a Miata hub from the net.