z32 transmission in 240

[skilo31545]

I heard from a friend that a z32 manuall transmission will work on a s14. Is this true? I plan on doin the auto to manual swap, just still deciding on the transmission I want to put in. Can the s15 6-speed bolt-in with no or little modification? Has anyone tried this?

[Structure240sx]

kits are made up to the z32 transmission by turbodave for about $2600

mazworx has a kit for the sr20 to use the z32 transmission

the s15 6spd might work with a bell housing swap, but its speed sensor is in the differencial. there is no great benefit to even having the s15 6spd. there are more gears in the same amount of space, because of this the gears need to be small which equals being weaker

my transmission has held up to 500+rwhp many many times so far. im sure a few more launches at the track and the output shaft would break but i also have many 11 sec slips on this transmission

[skilo31545]

So I should just look at the junkyard for a decent mileage 240 transmission? I am on somewhat of a budget, but the build is going to take place over the next six months or so and I wanted to finalize some ideas.

[Chezedik]

I think you are thinking of the Z31 manual trans, it is a T5 and will work.

[Structure240sx]

no z32 trannies now are being used by some people

if you are on a budget get a 240 transmission. z32 manual trans also needs a custom driveshaft, shifter bracket, bellhousing

[skilo31545]

This is one reason Im asking.

http://cgi.ebay.com/ebaymotors...34536

has everything it should and only 68k kilo ~44k miles.

[Chezedik]

What would be the advantage?

[Structure240sx]

z32 has much larger/stronger gears, larger/stronger output shaft (big reason there) and certain years have dual synchros

[Iamjohnhayes]

i never actually looked it up but a few people told me that the 240 (mine is an 89 sohc) has a t5 trans. so wouldn't this be somewhat logical:

could you swap any t5 trans into the 240 using your orginal bellhousing?

i understand output shafts could be different but speaking solely about the trans itself.

[Chezedik]

The bell housing is not removable, so you would have to mod it, and make sure also that the spline count/shaft size would be the same, which it should be on the Z (but maybe not on something else, like say, a mustang). The output is easy, you would take a yoke from wherever you got the trans, and use a non-staked u-joint to make it mate to the driveshaft. This might require machining with anything other than the Z trans. But even the stock is almost identical to a T5 except the synchros may not be as tough, and there are more heat sinks on the 240 trans.

[Iamjohnhayes]

i did not know that the bellhousing was not removable on the 240 trans. i could have sworn someone on here said something about a trans swap where you traded bellhousings or something. I have never actually taken a good look at my trans other than when i was laying under it to put on my exhaust.

i just thought it would be cool if it was a t5 where you could remove the bellhousing, i would love to mess around with somthing like a tremic on my 240 after i finally get around to being turbo.

[Chezedik]

Well, they were probably talking about the SR swap, which does have a removable bell, but the KA does not. Second, the T5 in the Z31 is a clone, not an ACUAL Tremec. But I don't see why you couldn't find a way to change input shafts so you could use it, I just don't know if it would be worth the trouble. A 240 trans is good until you start making super power, then you can go with a TH350 (or 700R4, don't remember which, but one of the guys on KA-t.org uses it) or beef up the KA trans, or go Z31 or T5. I don't think I will ever be making the power to make it necessary.

[klattr1]

Chezedik, the KA bellhousing is removable...thats how SR people use KA transmissions...it was Duy you are talking about with the turbo 350 transmission in his KA: http://www.ka-t.org/duy.htm .... also Brad D and his C4 transmission in his KA: http://www.ka-t.org/brad.htm

here's a Z32 transmission in a KA done by "efeezi" on KA-T.org:

http://www.ka-t.org/forums/vie...light=

[Chezedik]

Not from what I have seen, and I have had mine down a few times, but maybe I am missing something. I have also been told a number of times that it isn't. But if it is, then I like the idea of a T5 also.

[grimple1]

don't forget the price of a nice stall convertor.

[Charlie240sxt]

i just had a big transmission problem yea the bellhousing comes off i had everything apart its got a back half that also comes off(I cracked mine) and the front bell housing the center "ring" holds the gears its kinda fun to take apart not to put back together

[eddiec]

i was looking for info on nissan's use of the t5 and another member led me to this. http://www.az-zbum.com/informa...shtml

[deviousKA]

You guys are looking at the wrong transmission.

The "actual" t5 (not a t5 copy) comes in the late model 280zx (~81-83). It is manufactured by borg warner itself and has a bellhousing to attach to the l28 l series (which is removable along with the input shaft). This transmission has been copied by just about everyone, including nissan after 84 in the z31/32/trucks/s-chassis etc etc..

This borg warner in the 280zx turbo is compatible with many domestic manufactured parts for its vintage (NWC i think). The bellhousing attaches directly to a ka, truck block is easier (no starter mods and 240mm flywheels). L28 sits vertical so does the shifter, no problems there.

And yeah, you may find it hard to believe (US transmission in Nissan), just search it. Nissan didnt have a decent transmission for the 280zx turbo when it first came out so they just went to borg. Strength wise I believe it is reasonable in oem form, but would be best to upgrade with all custom internals since you have the option.

[deviousKA]

Here you go.

http://zhome.com/ZCMnL/tech/BorgWarner.htm

http://www.geocities.com/zgarage2001/borg.html