what 5spd is this?

[EricB]

In the pics I've attached the one labelled 4spd is a B box on loan from fellow club member Victor Laury (thanks Victor), the tranny labelled 5spd is a gift from another club member (thanks sennavsprost) before he moved up to San Francisco.

The thing about the 5spd I was given is that he thought it to be a T5 based on the "T5" stamp inside the bellhousing which I've enlarged for you all to see.

What's weird though is that I had another club member send me photocopies of the tranny tear-down pages for an '81-'82 T5 FS5R90A and the illustrations don't match at all what I'm looking at it. I compared what I have here with the illustrations of the optional 5spd FS5C71A in both my '73 Nissan SM and '70-78 Haynes SM and it doesn't match either.

So what 5spd is this?

I need to order parts for it and obviously need to know what car to get them from...

The '78 5spd that is in my Z at the moment has a bad bearing or two and I was going to pull it off and swap it with this "T5" because when it was in my friend's car shifter-wise it felt a lot tighter and more precise than mine...

[Victor Laury]

That's not a BW T5. Just another FS5W71B like your current bad transmission.

Parts at drivetrain.com

[sblake01]

The Borg Warner T-5 would have a removable bell housing and a different shift lever mechanism.

[Bambikiller240]

The Borg Warner T-5 would have a removable bell housing and a different shift lever mechanism.

To add to Stephens description............I don't know anyone who would say a T5 "felt a lot tighter and more precise" than a Nissan transmission.

[EricB]

ok then just answer me this:

Supposing my local nissan dealer parts guy is a moron and only goes by what year car the tranny I need replacements parts off of comes from, what do I tell him?

Does FS5W71B = '78 280Z 5spd?

-e

[Victor Laury]

ok then just answer me this:

Supposing my local nissan dealer parts guy is a moron and only goes by what year car the tranny I need replacements parts off of comes from, what do I tell him? Does FS5W71B = '78 280Z 5spd?

-e

That would work for everythig except gears. Some of the gaskets bearings and seals are shared throughout and most carried over from the earier A box to the later C boxes. With the exception of the coutershaft.

But, We can find the vintage by identifing the overdrive ratio. I made a quicky Degree wheel for the input shaft and a pointer for the output. I'll look up the data I used to remember the process I used.

[EricB]

Keith sent me the link to this site: http://www.geocities.com/inlinestroker/ratio.html

So according to it I have an 81-3 "close ratio" ZX 5spd as I have the single ear rear mount, the bolt that holds the speedo cog in place is at 6o'clock, and I can vouch that the speedo cog I pulled looks identical to the one listed as 81-3 ZX

cool... now i can order the right parts, thanks for the link Victor.

-e

[Victor Laury]

That's an interesting site. I was speaking of Marc's transmission info site

Gearing Chart

Using the info:

(8/78-7/79) (1st)3.321 (2nd)2.077 (3rd)1.308 (4th)1 (5th)0.864

(8/79-6/80) (1st)3.062 (2nd)1.858 (3rd)1.308 (4th)1 (5th)0.773

(7/80-6/83) (1st)3.062 (2nd)1.858 (3rd)1.308 (4th)1 (5th)0.745

In fith gear, turn the output 1 revolution, If the input only turns .745 (just before 9:00 oclock), then it has the 80-83 gearset.

A little after 9:00, the 1980 gearset

Just before 11:00 oclock, the early gearset

[sblake01]

The T-5 was used in the turbo ZX because it was thought to be stronger than the other 5 spds. I know guys with turbo cars and the regular (non t-5) 5 spd that aren't having any problems. I guess it's all in how you drive. It looks like the 80s or 90s Mustang 5.0 trans with a different bell housing. The only T-5 car I ever drove seemed less precise in it's shifting than the Nissan trans. Maybe I wasn't used to it or it was worn.

[Bambikiller240]

..... I guess it's all in how you drive. It looks like the 80s or 90s Mustang 5.0 trans with a different bell housing. The only T-5 car I ever drove seemed less precise in it's shifting than the Nissan trans. Maybe I wasn't used to it or it was worn.

Or what they are willing to put up with to have a "stronger" transmission. Most of the folks that I know (admittedly not a whole lot of people) who have a T-5 either in a ZX or V8 conversion long for a smoother shifting transmission. I have not heard anyone complain about strength issues, just smoothness, and noise in comparison to Nissan trans.

[Brett240]

Hi guys,

ib blew my gearbox a couple of weeks ago, when i pulled it i noticed it had "L7" stamped onto the side of the box, i replaced it with a box with "L5" stamped onto the side. the only difference i can see is the L7 has an extra sensor for what i assume is to tell a computer that the box isd in 5th? i also know that th L5 has a 2.9 frst gear.

What are these boxes/what are they out of?

thanks,

Brett