WTB: Front cover for '83 FS5W71B transmission

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abisel
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WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 05 Feb 2017 18:44

The front cover on mine has a grove where the throwout bearing sleeve rode. I would like another front cover in as new a condition as possible. Any leads?

Here is mine:
IMG_20170205_113347760-1.jpg
IMG_20170205_113347760-1.jpg (392.14 KiB) Viewed 598 times

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toylet
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby toylet » 05 Feb 2017 19:31


datzenmike
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 05 Feb 2017 21:12

Any cover '84 and older from an F4W71B or FS5W71B will work. Most are aluminum but I did have a steel one once.

Do NOT hammer on the part grooved with the release bearing. It will break. Instead reach in the clutch arm hole with a socket extension and hammer on the clutch arm pivot bolt to loosen the cover plate.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 06 Feb 2017 04:07

toylet: I have seen that one from American Power Train, but I am not sure it is for the smaller main bearings of the FS5W71B. I guess I could call them.

datzenmike? I saw a video where the guy screwed a long bolt into the hole of the pivot ball and tightened the bolt to loosen the cover.
speaking of videos here they are:
https://www.youtube.com/watch?v=eTdf7ncLy0A&list=PL6E9CZdcETvUPAlhJ2WqmZfgerC6Tdfks
Last edited by abisel on 06 Feb 2017 16:34, edited 1 time in total.

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 06 Feb 2017 09:53

BTW, here are a few more pictures of the transmission, thoughts?
Does L4 NMCA mean an Australian transmission? It is a 5-speed but I wonder if a close ratio. I'll have to count the turns.

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IMG_20170205_113331646-1.jpg
IMG_20170205_113331646-1.jpg (239.99 KiB) Viewed 553 times

IMG_20170205_113454743-1.jpg
IMG_20170205_113454743-1.jpg (225.1 KiB) Viewed 553 times

IMG_20170205_113506569_HDR-1.jpg
IMG_20170205_113506569_HDR-1.jpg (259.94 KiB) Viewed 553 times

datzenmike
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 06 Feb 2017 17:35

Well it's an L series 5 speed built after '79 and the mount looks like from a zx. If so, this is a close ratio with a 3.062 first and depending on year either 0.773 or 0.745 over drive

NMCA... Nissan Motor Car or Company Austraila.

Just remove the bolts and tap the pivot ball, pops right off.

Image
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zKars
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby zKars » 07 Feb 2017 06:06

Should be the 82-83 0.745 OD that we all wish we had 5 of. Tall ears on the shifter mount give it away.

I'm not very close, but I can rustle you up a front cover thingy if you get desparate.

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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 07 Feb 2017 06:29

The ears are also tall on the '80 720 box. I have a '79 zx 5 speed in my 710.(mid ratio that year) I put an '85 720 diesel tail on to get the taller hole for the shift pin fulcrum point. Shortens the shift length. That 5 speed still has the pin hole in the old or lower position but it could be drilled out higher up.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 09 Feb 2017 14:03

Still looking for a "like new" front cover for the early B series.

However, I heard that even the later model B series front covers would work, you just have to get the later and larger B series counter shaft bearing shims. Can anyone else confirm this?

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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 09 Feb 2017 20:20

The '85 and on cover has a 62mm counter bearing vs, the earlier 56mm.

As you are keeping the 56mm bearing you need the 56mm shims. The shims stack up on the front of the bearing and are squeezed between it and the cover plate. The more the bearing sticks out from the case, the thinner the shim(s) needed. For example if the bearing sticks out 0.1185" you need 0.024" of shim for a total of 0.1425"... if 0.1346you need a shim of 0.012 for a total of 0.1428" As you see the totals are near the same amount.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 18 Feb 2017 13:48

Now I need the 5th/reverse shift rod.

When I removed it and wriggled the shift fork off the rod, something was inside the fork and caused scratches on the rod. Not the roll pin either. My bad!!

So does anyone have a 5th/reverse shift rod for a 71B transmission? One without any scratches, dents, rust, etc.?

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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 18 Feb 2017 14:15

The rod simply moves forward and back about 1/2" each way. A scratch won't affect how it works, only the fork does anything.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 18 Feb 2017 14:46

datzenmike wrote:The rod simply moves forward and back about 1/2" each way. A scratch won't affect how it works, only the fork does anything.


That is true if the scratches were just localized. I wish I had noticed when removing the shift fork from the rod, but the zig zag scratches extend from the shift fork all the way to the end. So they would ride in the adapter plate and the bell housing. Dang it! I suppose I could try and dress up the scratches (pretty deep) with emery cloth, but if I can get a replacement rod, me thinks that would be better.
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby datzenmike » 19 Feb 2017 17:37

This is actually a 720 5 speed. I took this picture in direct sunlight probably 15 years ago and the camera did some tonal color change?

Image

The bottom shift rod is the 5trh/rev. there's nothing on it all the way to the front of the case. All the case does is support it in a hole. Nothing special, not a close clearance fit.

Image

That notch is for the spring loaded reverse light to ramp up and turn on when the rod moves forward. (to the right) You can see the small horizontal mark from the wear. There will be 3 small notches at the adapter plate (to the left) for a spring loaded check ball to drop into to help hold in 5th neutral and reverse. That's all there is and any scratches are not going to affect operation.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs

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abisel
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Re: WTB: Front cover for '83 FS5W71B transmission

Postby abisel » 20 Feb 2017 14:20

It may be that the shift rod scratches don't effect operation, but the far left side of the rod goes through the adapter plate and the far right side into the bell housing. I might be able to dress out the scratches in those areas. However, I would still like a rod without any scratches. I can't believe I messed this one up since all other disassembly went without a hitch.


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