Chicken Drumstick Posted March 26, 2012 Share Posted March 26, 2012 On a factory V8 90 with the standard LT85 5 speeder, when you rev it you get a whine sort of sound from the transmission. It does this either with the clutch in or out, although maybe a slightly different tone/sound. And also while driving. I don't think it's a problem as the vehicle has been known and/or in the family since around 2002 and goes fine, but I wouldn't mind knowing the cause of the noise and if anything can be done to reduce or curer it? And while I accept the LT85 will always feel more agricultural than an LT-77/R380, is there anything you can do to reduce the amount of throw/movement needed to change gear, or indeed make it feel more like an LT-77 in operation? Some sort of "quick shifter" linkage or similar? Thanks. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted March 26, 2012 Share Posted March 26, 2012 Only a guess here but could the whine be an oil pump? Quote Link to comment Share on other sites More sharing options...
antony110 Posted March 26, 2012 Share Posted March 26, 2012 I have no idea but Ashcrofts would know, that are very friendly and do not mind sharing Thier expert knowledge in this area. Quote Link to comment Share on other sites More sharing options...
landmannnn Posted March 26, 2012 Share Posted March 26, 2012 Just some bearings, Ashcroft do a diy bearing kit if you have a look on their site. Don't know about the gearchange, I had a V8 90 from nearly new, seem to remember 3rd gear nearly hit the radio and 4th gear was almost in the cubby box. Quote Link to comment Share on other sites More sharing options...
kiwi_110 Posted March 27, 2012 Share Posted March 27, 2012 Haha, unfortunatley a long throw and much noise are the price you pay for the good ol' LT-85... They're hard on their bearings, the helical cut gears cause the gear cluster to crash forward into the front of the box under load, that's a lot of thrust for the input shaft bearing to handle. You can rebuild with up-rated bearings to help cope with it. If you have a split-case model, you have an advantage during the rebuild process. Ray. Quote Link to comment Share on other sites More sharing options...
mickeyw Posted March 27, 2012 Share Posted March 27, 2012 As Ray said ^^^ The mainshaft bearings are the source of the noise, they don't seem to stay quite for long, even after a rebuild. The bearings are huge in size and huge in price too. I rebuilt my solid case LT85, not too difficult but you do need some special tools to remove/fit bearings to the shafts. If you are used to handling LT77s you had better have an extra Weetabix for breakfast before tackling an LT85 I wonder what difference modern synthetic lubricants would make to the running of this 'box? Of course you'd have to use something the oil pump is happy with. Quote Link to comment Share on other sites More sharing options...
tacr2man Posted March 27, 2012 Share Posted March 27, 2012 I run Redline Mt oil in my 110 V8 CSW , have done for years , works well , and the box has done some very hard work , eg towing over 3.5 tonnes in 45C and a maximum of 54tonne in one instance . the main box seems quiet enough but the transfer gets a bit whiney esp over 70 you can just about hear it over the tyres , but its always been like that . I dont see how you can shorten the throw of the gear lever other than by cutting something off the top, as you are moving some quite large gears , in a gearbox with a tall top . They obviously put the dog leg in it to stop it hitting the dash ! JMHO Quote Link to comment Share on other sites More sharing options...
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