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  #1  
Old March 18th, 2011, 09:32 PM
jhhorse
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joe heins
1995 defender 90
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Lt230q

Are the LT230Q boxes any quieter? considering one when my noisy (and getting noisier) transfer case goes on my 95 D-90.
Thanks
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  #2  
Old March 18th, 2011, 10:23 PM
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Scott
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Yes!
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  #3  
Old March 19th, 2011, 06:47 AM
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Tony Sims
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The are supposed to be, but experiences differ. The story:

Quote:
The LT230Q transfer box is mounted at the rear of the main gearbox and transmits drive to the front and rear axles via the propeller shafts. The LT230Q, while similar to the LT230T differs mainly in the following areas:
• Helix angle of gears increased to 31 together with an increase in the number of gear teeth thus giving quieter running and an increase in power transmission efficiency.
• Increased length mainshaft input gears together with increased thickness bearing housing and repositioned bearing.
• Redesigned intermediate gear bearings. Redesigned high gear bush giving quieter running
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
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This is straight out of the Manual for Build Builders.
Tony
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  #4  
Old March 19th, 2011, 10:17 PM
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Nick
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The are supposed to be, but experiences differ. The story:
How can you tell which one you have?
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  #5  
Old March 20th, 2011, 06:37 AM
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Tony Sims
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I think they have serial numbers beginning with 38D or 43D.
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
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Originally Posted by chris snell
This is straight out of the Manual for Build Builders.
Tony
1984 110 "Smokey" (sold)
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  #6  
Old March 20th, 2011, 08:50 AM
ajh
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Andrew J. Hutton
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The new one I got from Ashcroft is significantly tighter and quieter than the old non-Q box. They're also stronger so better if you're going to be putting in a higher output engine as well.
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  #7  
Old March 20th, 2011, 02:42 PM
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I switched from the LT230 to the Q and noticed a difference immediately. I even lost quite a bit of "slop" that plagues these trucks.
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Old March 20th, 2011, 03:12 PM
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Tony Sims
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Quote:
Originally Posted by ajh View Post
The new one I got from Ashcroft is significantly tighter and quieter than the old non-Q box. They're also stronger so better if you're going to be putting in a higher output engine as well.
Did you have them install the HD solid cross pin?
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
Quote:
Originally Posted by chris snell
This is straight out of the Manual for Build Builders.
Tony
1984 110 "Smokey" (sold)
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  #9  
Old March 20th, 2011, 03:17 PM
ajh
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Not needed for this one, but if I was putting real power behind it with lockers I'd absolutely go for that. I'm thinking about doing one with a Quaife centre for a racer I'm hoping to start working on in the next while. With the 200TDI I'm just not worried.
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  #10  
Old March 20th, 2011, 07:11 PM
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Quote:
Originally Posted by TS888 View Post
Did you have them install the HD solid cross pin?
While I think this is a good upgrade, I seriously doubt that anyone has put that much more stress on an lt230 than I have. (arrogant I guess, but probably accurate). If you keep your diff locked, and don't try digs, I think the t-case as good as it gets in stock form. Fantastic actually. I like it much better than the atlas in my racecar.
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  #11  
Old March 21st, 2011, 01:42 PM
jhhorse
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joe heins
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Thanks to all the input, I went ahead and made the swap; I guess my old transfer box was getting ready to become a million little pieces on the highway, the LT230Q I had installed, used from a 98 Disco, is virtually silent compared to the original!
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