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Whining drive train

 
 
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Dial222
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Joined: 27 Mar 2018
Odometer: 3




PostPosted: Tue Mar 27, 2018 12:55 pm    Post subject: Whining drive train Reply with quote

Ex Mod 110 with a Disco 300 Engine and Transfer box. Retained Military LT77 Gearbox into 3.54 axles.

Since replacing the transfer box i now have a whining noise in 4th and 5th at higher speeds. I can slow down and it eases or give it more welly and drive through it.

Is the whining likely to be the new Tfer box or a mismatch in hardware across the drive train or something else altogether?
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lambert
Articulating


Joined: 21 Nov 2009
Odometer: 751
Location: the crown subsistancy of yorkshire



PostPosted: Wed Mar 28, 2018 4:42 am    Post subject: Reply with quote

Lt77's aren't the most stable of things at the best of times. Was the clutch done with the engine swap? Welcome to the forum.
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Oh, really? That is a pity.
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Nightbar
Difflock Royalty


Joined: 30 Sep 2003
Odometer: 20614
Location: In a state of anticipation...


1999 Land Rover Defender

PostPosted: Wed Mar 28, 2018 4:57 am    Post subject: Reply with quote

Welcome (I don't know)
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The ex-Difflock Ambassador to Naples, Sir Nightbar DCJC DFS and 2 bars.

Plant a tree for the Difflock 3
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Dial222
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Joined: 27 Mar 2018
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PostPosted: Wed Mar 28, 2018 6:54 am    Post subject: Reply with quote

lambert wrote:
Lt77's aren't the most stable of things at the best of times. Was the clutch done with the engine swap? Welcome to the forum.


Yeah, the engine was done 3 years prior to the transfer, the issue only arose after the transfer but the fitter said the output shaft on the gbox would need attention within the next year or two. The whining was from the point of the transfer box fitting.

I wonder if it may in fact be my axle / prop, the sound 'feels' like its coming form further back anyhow. Had another listen on the way in.
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Mr Tyre
Mud Obsessed


Joined: 17 Jun 2002
Odometer: 4884
Location: Darlington Co Durham



PostPosted: Wed Mar 28, 2018 7:05 am    Post subject: Reply with quote

If the noise came after the transfer box fitting it has to be the box. You could check the diff oil level and the colour of the oil, and check the condition of the UJ's and give them a greasing to see if that helps, but i'm not convinced.


The military have used R380's for a long while now, the transfer box ratio on a Discovery transfer box is 1.2, if you are thinking about fitting anything larger in diameter than 32 inch tyres you want to be looking for a 1.4 ratio Defender box instead if the current box is u/s
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Dial222
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Joined: 27 Mar 2018
Odometer: 3




PostPosted: Wed Mar 28, 2018 9:32 am    Post subject: Reply with quote

Mr Tyre wrote:
If the noise came after the transfer box fitting it has to be the box. You could check the diff oil level and the colour of the oil, and check the condition of the UJ's and give them a greasing to see if that helps, but i'm not convinced.

The military have used R380's for a long while now, the transfer box ratio on a Discovery transfer box is 1.2, if you are thinking about fitting anything larger in diameter than 32 inch tyres you want to be looking for a 1.4 ratio Defender box instead if the current box is u/s


I still have my 1.667 so I can live with it til it blows if its the Transfer box. I'll be running it as largely stock so it'll stay in it's 7.50x16s
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Mr Tyre
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Joined: 17 Jun 2002
Odometer: 4884
Location: Darlington Co Durham



PostPosted: Wed Mar 28, 2018 6:26 pm    Post subject: Reply with quote

Don't know if you have run far with a 1.667 on but you will notice how much slower they go with them in, 1.667 is very popular with people running very large diameter tyres and stock 3.54 axles if you want to flog it on.
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Xpajun
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Joined: 22 Sep 2008
Odometer: 3234



1988 Mitsubishi Shogun

PostPosted: Thu Apr 12, 2018 6:29 pm    Post subject: Reply with quote

Obviously theabove poster (that maybe deleted soon) can tell you how to rbuild your diff using a HP 3D SPAM that will produce a diff that will be 1000 times stronger than steel

HP printers - yet another name to cross off my list of who to buy!
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Nightbar
Difflock Royalty


Joined: 30 Sep 2003
Odometer: 20614
Location: In a state of anticipation...


1999 Land Rover Defender

PostPosted: Thu Apr 12, 2018 6:39 pm    Post subject: Reply with quote

You know that the future is in adaptive printing! Cool
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The ex-Difflock Ambassador to Naples, Sir Nightbar DCJC DFS and 2 bars.

Plant a tree for the Difflock 3
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Mr Tyre
Mud Obsessed


Joined: 17 Jun 2002
Odometer: 4884
Location: Darlington Co Durham



PostPosted: Fri Apr 13, 2018 2:55 pm    Post subject: Reply with quote

Nightbar wrote:
You know that the future is in adaptive printing! Cool


Very Happy
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Xpajun
Mud Obsessed


Joined: 22 Sep 2008
Odometer: 3234



1988 Mitsubishi Shogun

PostPosted: Fri Apr 13, 2018 6:10 pm    Post subject: Reply with quote

You know there is a guy somewhere that makes limbs on a 3D SPAM - does it free of charge too they are made at a nth of the price that the NHS charges or pays, the only thing is he uses recycled plastic bottles - you know the ones that the rich folks want to ban
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Nightbar
Difflock Royalty


Joined: 30 Sep 2003
Odometer: 20614
Location: In a state of anticipation...


1999 Land Rover Defender

PostPosted: Fri Apr 13, 2018 7:00 pm    Post subject: Reply with quote

They don't want want to ban them - or how else can we be taxed through the nose to use them Cool
__________________________________
The ex-Difflock Ambassador to Naples, Sir Nightbar DCJC DFS and 2 bars.

Plant a tree for the Difflock 3
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jojo
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Joined: 11 Aug 2007
Odometer: 5263




PostPosted: Sat Apr 14, 2018 9:24 am    Post subject: Reply with quote

Nightbar wrote:
They don't want want to ban them - or how else can we be taxed through the nose to use them Cool


That's right; simple politics, if you cant tax it ban it.


J
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