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Zaspen

72 240 Transmission Crossmember Rubber Bushings

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    I made a rookie mistake and had all the pieces of my transmission crossmember power coated including the inner piece that has the rubber bushings.  Well the rubber bushings melted away- go figure.  I turned to the poly bushings which apparently don't fit a 72 mount and now I'm at a bit of a loss.  Anybody have any replacement ideas or even an old mount with good bushings laying around?  The OEM replacement bushings have been NLA for years.  Zeddsaver has a restored one for $200 plus shipping so that is always a (pricy) option. I'm trying to keep my restoration as correct as possible so I really want to stick with the original mount style.  Picture of my mount style below for reference

    20171110_113059.jpg

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    Looks like you need part #18.  It would have a metal sleeve around the rubber.  Is the metal sleeve still in yours?  Not really clear what went wrong with yours.  The rubber does not melt.

    http://www.carpartsmanual.com/datsun/Z-1969-1978/engine-240z-260z/engine-mounting/manual-from-c-hls30-46001-rls30-grls30

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    #18 is what I need.  It melted from the heat of the powder coating process.  

    20200225_210515_resized_1.jpg

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    So the metal sleeve is still in there, I think I see it).  I wonder if the urethane bushings are meant to have the sleeve removed?  Might be an option if you can't find a replacement.  Press the sleeve out with a vise or a press if the urethane that you have is too tight to fit.  It's probably about like a front control arm bushing.

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    The poly bushings they sell are still too big with the sleeve out. I actually turned one down to fit but then they are too long. Both the small diameter and the flange area are too long. 

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    Bumping this topic to see if anyone might have some ideas.  I'm getting close to the point of tranny install.  Thanks

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    Unfortunately it seems every manufacturer and z store ignores the fact that the 1972 bushings are actually different from all other years. 

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    Posted (edited)

    Maybe something in the universal sizes are close?  There must be some other car that has a similar size bushing.

    https://www.suspension.com/universal-bushings.asp

    Some rubber style too :

    https://www.rpmrubberparts.com/stock-parts/category/vibration-control-products/bushings/center-bonded-bushings

    Edited by Terrapin Z
    added info

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    For future reference I did figure something out for these bushings.  The outer transverse link rubber bushings have the same OD and length for the body of the bushing.  The inner sleeve has a bigger ID but the original crossmember inner sleeve fits perfectly inside the new bushing,  The new bushing also has a slightly shorter sleeve so you have to make that distance up with a spacer.  Luckily I had some old transverse link bushings that I was able to pull the inner sleeve and cut to size.  I should have taken some pictures but I was pushing to get it done and the tranny in.

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