LT77 gearbox mountings, Has anyone tried......

[briantvr350i]

Hi Guys,

I have a pair of new gearbox mounting rubbers to fit to my S2 350i

Has anyone tried changing these with the engine/gearbox in situ?

It looks as though there may be enough room to undo the nylock nuts at the bottom end and jack the tail end of the gearbox up enough to unscrew the rubber mountings from the gearbox and change the old oil soaked squidgy ones for some nice solid ones.

Before I waste my time finding that can't be done I wondered if anyone had tried to do it before.

I realise due to the design and build tolerances in wedges, even if someone has managed it there is no guarantee that it will be possible on mine, but I thought I'd ask anyway.

Regards,

Brian (and a Red 350i)

I might even get to drive it when it stops raining, someone had to go and declare a drought didn't they!

[JMF894]

Hi Brian i have these to do on my 450

Was supposed to get them done last Saturday but couldn't get access to a pit in the end.

I have however had a good look under there and asked around a bit.

You will need to give yourself approx 25mm clearance in order to unscrew the old bobbins out of the gearbox.

You should be able to do this without removing anything eg prop etc.

Are you attempting it at home? I take my 450 down to my local garage for this kind of thing as, as mentioned i can get it over their pit whichhas a gearbox jack that i can simply slide into position.

Watch out for the gear linkage/lever as you jack the 'box up and also any pipework that runs across the top of the 'box.

As said i know this only from advice and not yet from experience.

Let me know how you get on bud.

Jimbo

[GV]

I haven't changed these in situ only with the box out. I think the key issue here is making sure you get the old mounts off in one piece as mine split in the middle due to the rubber being contaminted with oil. Provided you have good access under your car it will be a case of undoing both 13mm nuts and then jacking up the rear of the g/box slightly to get the mounts free before undoing them. Like I said, be careful not to split them in half across the diameter.

I would be interested to see if there was a poly alternative to the rubber type as I don't think they appear to last very long especially if they do get oily...

[njhucker]

I had mine changed by roath garage (tvr specialist). They did not take the box out to do it.

[briantvr350i]

Thanks for the replies boys,

Looks like it may well be possible, I'll let you know how I get on.

Regards,

Brian (and a Red 350i)

[GV]

njhucker said:

I had mine changed by roath garage (tvr specialist). They did not take the box out to do it.

I changed mine when my gearbox came back after its refurb...

[briantvr350i]

Hi Boys,

Finally time and decent dry weather coincided...

Managed to change the bushes in a couple of hours in the drive using nothing more than a couple of decent car ramps and a trolley jack with some blocks of wood.

Both old bushes needed a chisel and a hammer to free them, then they unscrewed by hand the rest of the way. Usual TVR issues of no room to work, chassis and exhaust in the way, but really quite straightforward.

Result, exhaust no longer rattles on chassis, gear-lever doesn't move around during power on/off...


judge for yourselves if they needed changing or not!



Regards,

Brian (and a Red 350i)

[JMF894]

I did post this a coule of weeks ago but at least you're sorted now

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Jimbo