NAS 110 ride quality vs. my 110 - Page 2 - Defender Source
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  #21  
Old March 7th, 2016, 12:59 AM
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Quote:
Originally Posted by Tyler Wirken View Post
Thanks. So I need to do that math on all of the gears then if I want to keep the tires I have.

I will check out Ashcrofts site.
Put a Roverdrive in it.
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  #22  
Old March 7th, 2016, 06:54 AM
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There is a Q series LT230 that folks say Stands for Quiet. I don't recall if the 97 had the Q series. But the difference in gearing on the highway does make a huge difference in overall vibes and exhaust tone.

Are you running genuine motor mounts? I swapped out a set of brand new aftermarket mounts recently. Noticed a Big difference right away.
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  #23  
Old March 7th, 2016, 07:51 AM
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Originally Posted by Brewie212 View Post
Won't fit on the rear 110 springs.
I used OME80PR10 on rears.
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  #24  
Old March 7th, 2016, 08:01 AM
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What tire pressure are you running? I would look into the later door seals.
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  #25  
Old March 7th, 2016, 09:13 AM
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Perhaps a combo or any one of the following differences exhaust, t-case whine, street tires, and door fitment or other air gaps, no bulkhead vents NAS110, etc.
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I am talking purely from an aesthetics standpoint.
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  #26  
Old March 7th, 2016, 09:16 AM
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On tire diameter - the noise generated by the tire is almost totally unrelated to diameter.

The advantage of a smaller tire is less rotating mass and, ultimately, cost.

Running a 4.10 gearset means that you need larger diameter tires, which is a disadvantage.
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  #27  
Old March 7th, 2016, 09:24 AM
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I run 235/85 on Boost with the Q transfer case and the noise is bearable. When I had the tires installed the guy put 50psi, it sounded like crap and rode like crap. I dropped it down to 35 psi and I was pleased.
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  #28  
Old March 7th, 2016, 10:05 AM
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Stock shocks (Woodhead brand) are simple/soft hydraulic shocks. Most all aftermarket shocks are high pressure gas shocks. There is a considerable difference in ride quality,and road noise, that is transmitted up into the truck by the stiffer shocks. This will include tire noise and resonance.
Street tires have softer sidewalls, all terrains and mud terrains are much thicker/stiffer sidewall tires which again mean a stiffer ride and more sound and road feel transmission into the truck.
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  #29  
Old March 7th, 2016, 11:31 AM
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I know this is not the best idea because it sucks, but the padded carpet really cuts down on noise. The 4.10 gears with 1.2 t-case out of the 97 D90 about evens out for rpm. Not quite, but close. Make sure the t case is full of oil.
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  #30  
Old March 7th, 2016, 12:03 PM
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Quote:
Originally Posted by 1of40 View Post
There is a Q series LT230 that folks say Stands for Quiet. I don't recall if the 97 had the Q series. But the difference in gearing on the highway does make a huge difference in overall vibes and exhaust tone.
The '97 D90's did have the LT230Q transfer case which also has the cross drilling in the output shaft for better lubrication. I'd also bet they were put in the D1's of the same year and hence there are probably many available for recycle yards or buy an entire '97 D1 for a song.
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  #31  
Old March 7th, 2016, 12:46 PM
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Quote:
Originally Posted by rijosho View Post
Perhaps a combo or any one of the following differences exhaust, t-case whine, street tires, and door fitment or other air gaps, no bulkhead vents NAS110, etc.
My 110 without bulkhead vents is much much quieter than any other tdi defenders I've been in. I dont have the NAS style AC, but I did put a little sound deadening in there behind the bulkhead.
After trying to insulate other tdi defenders, ive come to the conclusion that the vents (or lack of insulation behind them) let a lot of noise through.

That said, I'm going to cut vents into that truck someday.....the vents are way too awesome not to have.
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  #32  
Old March 7th, 2016, 01:51 PM
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Originally Posted by D90user View Post
the vents are way too awesome not to have.
Hmmm, not sure what this means. Mine just seem to be there, but doesn't seem to be set up to really do anything. They do look old school from the outside in a cool way. Otherwise, am I missing something?
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  #33  
Old March 7th, 2016, 01:59 PM
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Originally Posted by cowboy View Post
am I missing something?
certainly sounds so.
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