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280zx JTR crossmember in s30?


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I searched a couple of phrases without too much luck so I was hoping someone might be able to help. I'm looking for someone that has used the JTR 280zx trans crossmember setup in an s30 instead of the flatbar. Don't get me wrong I'm not knocking the flatbar as I know many use it with great success. I just saw the in tunnel 3 piece zx crossmember and thought I would prefer it if it isn't too much trouble to utilize it instead. Thanks for the help.

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Is it like a triangular looking piece?

 

Where there are two plates that come down the trans-tunnel walls, then there's a bar across the middle that the transmission rests on?

 

I think I have the mount you're talking about, in that case. I think it's part of the Hooker Scarab kit.

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The angles of the plates were wrong(they didn't spread far enough to touch the walls) and the cross-bar was about 1/2" to 5/8" too narrow to bridge the gap. That mount is designed to fit very snugly against the walls of the transmission tunnel-- and there's no way that was happening in mine. I took some measurements at key points along the frame and used a laser-level to see if there was something up with my uni-body, nothing seemed terribly out of tolerance (which is amazing for a 40-year-old Z).

 

It may have been just poor manufacturing precision (i.e. there was little QA or the jigs are just worn/tired/old) or a fluke, but I think the JTR mount set-up, or something similar is probably the best solution. I like the set-up PParaska did, where he used the transmission cross-member to tie the extended frame-rails together. IIRC, it's very similar to the JTR solution but with extra length to extend to the rails on either side.

Edited by kamikaZeS30
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