1.4 or 1.2 LT230 for defender - Defender Source
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  #1  
Old January 25th, 2015, 09:31 AM
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1.4 or 1.2 LT230 for defender

Looking to replace my 1.6 lt230 with a 1.2 or a 1.4.

Let me know if you have one!
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  #2  
Old January 25th, 2015, 09:38 AM
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What engine do you have?
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  #3  
Old January 25th, 2015, 09:40 AM
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Assuming standard diff gearing (3.54) and 2.5NA, I'd say 1.4 is where you'd want to be.
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  #4  
Old January 25th, 2015, 09:43 AM
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The 1.4 may be a stretch at that.
That's why I asked about the engine.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #5  
Old January 25th, 2015, 09:50 AM
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LOL. I remember being in Raubs tithonus @ MAR a couple years ago. We had to use low range to get up the payed road going up the mountain to get to the trails.
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  #6  
Old January 25th, 2015, 10:43 AM
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2.5na. Soo I'm guessing 1.4 or 1.2 is too much?? I just want to cruise at a bit lower rpm in the highway.
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  #7  
Old January 25th, 2015, 11:35 AM
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1.2 is too much. 1.4 should be okay, especially if you have the 51A gearbox with the lower first gear.
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  #8  
Old January 25th, 2015, 11:41 AM
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I too am currently researching on this.
Take your tyre size into your equation.
I'm running 255's with the 1.6 n a roverdrive and currently looking for 411's rather than the 354's.
I believe if I'd kept the 7.50 tyres with the roverdrive I'd been golden running the om617
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  #9  
Old January 25th, 2015, 11:51 AM
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Pablo, that 2.5 na motor was rated at something like 68 hp from the factory, I doubt yours is making that much anymore. Your LT230 is not the problem however, that worthless lump of dried dog turd sitting in your engine bay is.
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  #10  
Old January 25th, 2015, 12:02 PM
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I think too many people end up driving 2.5NAs that are in bad shape. At sea level, they should cruise happily at 70 mph on the flats. The 1.6 makes this difficult and a 1.4 makes this much easier.

If you can't at least sit at 65 on the flats, then your engine or injection system needs some attention.
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  #11  
Old January 25th, 2015, 01:12 PM
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Quote:
Originally Posted by Daddymow View Post
Pablo, that 2.5 na motor was rated at something like 68 hp from the factory, I doubt yours is making that much anymore. Your LT230 is not the problem however, that worthless lump of dried dog turd sitting in your engine bay is.
The engine actually runs great, it was swapped out for a reconditioned engine in 2008, no smoke, no rattles and pulls pretty good. And doesn't consume oil..

I can hit 65 And hold a Good 60mph But its loudd, I think a 20-25% extra in 5th gear would be perfect.

So I guess I'm in the hunt for a 1.4 now, if anyone has one let me know!

Thanks!
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  #12  
Old January 25th, 2015, 01:18 PM
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1.4 would be a good step esp if the long term goal is a 200tdi
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  #13  
Old January 25th, 2015, 01:27 PM
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Quote:
Originally Posted by PabloCocito View Post
The engine actually runs great, it was swapped out for a reconditioned engine in 2008, no smoke, no rattles and pulls pretty good. And doesn't consume oil..

I can hit 65 And hold a Good 60mph But its loudd, I think a 20-25% extra in 5th gear would be perfect.

So I guess I'm in the hunt for a 1.4 now, if anyone has one let me know!

Thanks!
If you go 1.2 you'll spend most of your time on the highway in 3rd.
If you go 1.4 you'll spend most of your time on the highway in 4th.
Your issue is not gearing, it's lack of performance.
Running great and having enough guts to pull your ride at a decent speed are two entirely different things.
Changing the gearing will not make you go faster.
You'll need to change the engine for that.
I was driving a 4 cylinder N/A diesel years ago, pulled out on the highway, and a car 5 miles back nearly ran into the back of us.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #14  
Old January 25th, 2015, 01:32 PM
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Quote:
Originally Posted by Rocky View Post
1.4 would be a good step esp if the long term goal is a 200tdi
I have a 1.4 and wish I had a 1.2 but that is in a 200Tdi powered 90.
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  #15  
Old January 25th, 2015, 01:49 PM
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Quote:
Originally Posted by rdavisinva View Post
If you go 1.2 you'll spend most of your time on the highway in 3rd. If you go 1.4 you'll spend most of your time on the highway in 4th. Your issue is not gearing, it's lack of performance. Running great and having enough guts to pull your ride at a decent speed are two entirely different things. Changing the gearing will not make you go faster. You'll need to change the engine for that. I was driving a 4 cylinder N/A diesel years ago, pulled out on the highway, and a car 5 miles back nearly ran into the back of us.
I'm not looking to go faster at all I'm happy holding 55ish, I just want to be able to hold that speed and not have to be at max rpm, it just feels like it's gonna blow the whole time in the highway..
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Old January 25th, 2015, 02:00 PM
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I think you missed the point... instead of being in 5th with the engine sounding like it will blow with a 1.6, you'll be in 4th gear with a 1.4 with the engine sounding like it will blow.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #17  
Old January 25th, 2015, 02:07 PM
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Quote:
Originally Posted by rdavisinva View Post
I think you missed the point... instead of being in 5th with the engine sounding like it will blow with a 1.6, you'll be in 4th gear with a 1.4 with the engine sounding like it will blow.
And that's when you throw it in 5th and cruise at the same speed give or take just at lower rpm? My dad has a rover drive in his which converts it to 1.4 when engaged and it cruises great in rover5th

Wouldn't it essentially be the same but as if the over drive is always engaged?
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  #18  
Old January 25th, 2015, 02:12 PM
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Your engine won't be able to pull 5th except when you're going down hill, that's what you don't understand.
Switch to 1.4 or 1.2 - put it in 5th, hit a very slight upgrade or on the flat with a slight head wind and you can't go 55. You don't have enough power.

Capiche?
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #19  
Old January 25th, 2015, 02:12 PM
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It's the POS motor not the transfer case ratio that is the problem!!!
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  #20  
Old January 25th, 2015, 02:34 PM
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Quote:
Originally Posted by rdavisinva View Post
If you go 1.4 you'll spend most of your time on the highway in 4th.
I'm sorry but this is just not true. I ran a 2.5NA for years with a 1.4. Absolutely no problem staying in 5th even at altitude. If you can't maintain 5th on the flats, the engine is not in in proper condition. Like I said 70 mph at sea level on the flats should be no problem.
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