Opinions on the 4.6 for an NAS 110? - Defender Source
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  #1  
Old March 31st, 2010, 10:29 PM
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Peter/Lesbo
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Opinions on the 4.6 for an NAS 110?

So with an NAS 110 restore on the docket, I want to replace the 3.9 with something that has a bit more power... On the drive back from California it was struggling up the long grades. It was able to cruise at 75 easily, albeit quite noisily. I would LOVE to find a four wheel drive dyno so I could find out what the engine is actually doing. It might just need a rebuild?

Thant being said, what does anyone think of the 4.6 for a NAS 110?

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  #2  
Old March 31st, 2010, 10:45 PM
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Some feel, if you're not a diesel guy, that the 4.6 is the perfect motor for the 110. I couldn't really tell you, since I didn't manage to get mine driving before I left
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  #3  
Old March 31st, 2010, 10:55 PM
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I hear the 5 litre tvr hybrids work wonders. Not cheap but Hamster seems thrilled with his.
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  #4  
Old March 31st, 2010, 11:04 PM
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Brad Harris
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I'm on the 10 year find and build a 110 plan and have a definite opinion about the engine I'm going to stuff into it... but I'll not mention it here for fear of offending the purists...

I've only driven a 4.6 in a RR but it seemed like a nice engine...
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Old March 31st, 2010, 11:10 PM
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I feel it's darn near perfect. Very drivable, and doesn't give you the "schoolbus" feeling. Even in front of an automatic it still is decent.
Just my .02 though.
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  #6  
Old April 1st, 2010, 12:32 AM
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Peter/Lesbo
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Quote:
Originally Posted by bharris View Post
I'm on the 10 year find and build a 110 plan and have a definite opinion about the engine I'm going to stuff into it... but I'll not mention it here for fear of offending the purists...

I've only driven a 4.6 in a RR but it seemed like a nice engine...
Ok come on spill the beans, what would you like to put in your 110?

How hard is the 4.6 to find and roughly what do they run? I "figger" that keeping the NAS 110 a gas rig might be best.

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  #7  
Old April 1st, 2010, 01:17 AM
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All you really need is the short block and a new cam and a spacer. If you have the money, buy a known good block or a new block. Personally, I would run GEMS or non-air injection Bosch heads as opposed to skimming the originals, but there is nothing wrong with the stock ones.

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  #8  
Old April 1st, 2010, 08:18 AM
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J. Michael McCaig
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If you don't mind the fact that the NAS110 is no longer "original, as it came from the factory" and you want to stick with petrol then definitely do it. This is what Rover should have done for the NA market. It is a night and day difference. As Ron said you can use the GEMS heads or, if you want to use your old heads, don't skim them if you want to lower your compression ratio a little to run on regular.
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Old April 1st, 2010, 08:29 AM
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Rich Campbell
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Quote:
Originally Posted by EWR View Post
I feel it's darn near perfect. Very drivable, and doesn't give you the "schoolbus" feeling. Even in front of an automatic it still is decent.
Just my .02 though.
"schoolbus" For the longest time I couldn't put my finger on what it is like to drive a 90. You just hit the nail right on the head with that. I do love driving it though!.
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  #10  
Old April 1st, 2010, 09:17 AM
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Go for it!
I drove a 4.6 NAS D110 recently that still had the 3.9 ECU, and even with that it was as if someone turned on the lights. When you hit the gas peddle you can feel the speed increase not just a bunch of noise.
Keep the 3.9 plenum so you retain the stock look if you want.
There is a good thread already started that has good information on the conversion: Click Here---> 4.6
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