Late and Early gearbox mounts

PostPost by: garyeanderson » Thu May 15, 2008 11:17 am

Fred had some questions on the gearbox mount on his 65 S2 and Photos tell the story a lot easier than verbage so here are some that I took this morning.
Fred posted a link to his gearbox mount, one of the previous owners has been creative in making a new bracket to afix a early tailshaft to a late gearbox mount. the link is
http://www.96trees.com/?p=12
Freds Photos

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hear are the photos from my parts bin.

Early tailshaft (upside-down) had a pair of threaded holes to accept the fabricated bracket (omega shaped piece with stud).
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machined pad shown with two threaded holes from another angle
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Late mount on left and early on the right with omega bracket.
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Hole spacing difference on the late top, early bottom mounts.
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I didn't get out the respective gearbox crossmember brackets as I may not be able to lay my hands on them but Roger Sieling sent along this photo of the late crossmember bracket and you can see the difference between it and the bracket that is in Freds pictures. It's enough to say that they are indeed different. The early brackets have the hole spacing that are different and the late crossmember brackets are reinforced with some extra bracing welded on to prvent cracking.

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PostPost by: Fred Talmadge » Mon May 19, 2008 1:35 am

Here are the two parts from my Elan. Notice the studs welded to the crossmember they bolt to the rubber piece that is then attached to the gearbox with that aluminium part. Real problem with this setup is that there is not side resistance, except for the single bolt.
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cm2.jpg and
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PostPost by: rgh0 » Mon May 19, 2008 11:07 am

Your setup is a conversion of the early mount backet and gear box to take the later rubber mount designed for later bracket and gear box

Bolts welded on support cross member to match the wider spacing of the rubber mount holes as no room to redril holes given the cross member different shape from the later version.

Adpater made of gear box to match later rubber mount.

Lack of sideways restraint same as all cars with later mounts and this normally gives no problem. Would only be an issue if the front engine mounts are lisaligned and the engine does not sit parallel with chassis

cheers
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