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Swapping in a Trans from a 240sx...advice?

March 17, 200916 yr

I have heard of this swap and have thought about it for the simple fact that you can get better gearing for the 240sx tranny.

So what are the ratios? As far as I can see they are not as good as the late 280zx tranny, especially the low 1st. The late 280zx was classified by Nissan as a "close ratio" tranny. The later one also had the benefit of stronger synchros.

As with all choices of trannys very much depends on your choice of wheel/tyre sizes and final drive.

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March 17, 200916 yr

comment_277827

hmm im not to sure but i think you can bold the bell housing from the z tranny to the 240sx, ive done this swap with one of my friends on his ka 510 but not 100% sure about it on a z

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March 18, 200916 yr

comment_277862

So what are the ratios? .

Outlined in the article written by Steve - and as Posted a #4 above. See the 4th page.

http://ZHome.com/ZCMnL/tech/240SX5spd/transmission.htm

FWIW,

Carl B.

Edited March 18, 200916 yr by Carl Beck

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March 18, 200916 yr

comment_277895

Outlined in the article written by Steve - and as Posted a #4 above. See the 4th page.
http://ZHome.com/ZCMnL/tech/240SX5spd/transmission.htm
FWIW,
Carl B.

Thanks Carl. Useful article. Basically confirms what I said that the ratios in the ZX tranny are superior to the SX box. As for strength, the selector forks in the SX are obviously beefed up to presumably counteract the tendency of the ZX to break them but double roll pins seems to cure this problem.

Can't see why it's necesary to go to the expense of all the hassle to fit the SX tranny when there's a tranny available which for 90% of daily drivers is perfectly adequate and in some respects superior.

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6 months later...

October 1, 200915 yr

comment_296186

prior post: "Can't see why it's necesary to go to the expense of all the hassle to fit the SX tranny when there's a tranny available which for 90% of daily drivers is perfectly adequate and in some respects superior."

A better, more positive-feeling shifter maybe...looks like the FS5W71C unit has a redesigned ball&socket link which seems a bit beefier than the old style with the bushings that always wear out & can't stand up to abuse.