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  #1  
Old December 6th, 2015, 11:38 AM
scrubs
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LT230 education help

Hi, before posting a wanted item thought it'd be best to ask for assistance.

Been reading on the LT230 1.2 to replace the 1.6 and am getting a bit confused with all the different types.

It'd be nice to find the Range Rover classic tcase but not sure if it'd mate upto an R380, or the second best tcase, "Q" ones seem to be the quite one but reading, lack good bearings.

Any input could save a lot of hassle and disappointment.

Replacing LT77 LT230 with Roverdrive

Looking to go R380 stumpy gearbox n tcase to work with om617a & 411's with 255's

It's a DD and has been very good with the ex mod set up but now running more HP n looking to put it to better driving use.

Thanks
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  #2  
Old December 6th, 2015, 11:42 AM
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What motor do you have?
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Old December 6th, 2015, 11:43 AM
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Om617a with M-pump, somewhere in the 250hp torque unknown
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  #4  
Old December 6th, 2015, 11:44 AM
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Quote:
Originally Posted by javelinadave View Post
What motor do you have?
In the op.

Quote:
Originally Posted by scrubs View Post
Looking to go R380 stumpy gearbox n tcase to work with om617a & 411's with 255's
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  #5  
Old December 6th, 2015, 11:46 AM
scrubs
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Red90, hoping u'd chin in, looked at your page on this you've done a lot of research, input would be greatly appreciated
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  #6  
Old December 6th, 2015, 11:47 AM
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Quote:
Originally Posted by scrubs View Post
somewhere in the 250hp torque unknown
Seriously? I call BS.
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  #7  
Old December 6th, 2015, 11:49 AM
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Red90, hoping u'd chin in, looked at your page on this you've done a lot of research, input would be greatly appreciated
Any box should be fine really. The later Q ones are not as noisy if that matters. Always safest to use a rebuild one.
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  #8  
Old December 6th, 2015, 11:49 AM
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Yeah even with an M pump I don't see the 617 pulling 250hp
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  #9  
Old December 6th, 2015, 11:53 AM
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Quote:
Originally Posted by scrubs View Post
Om617a with M-pump, somewhere in the 250hp torque unknown
Quote:
Originally Posted by Red90 View Post
In the op.
Obviously I missed that.
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  #10  
Old December 6th, 2015, 12:12 PM
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Quote:
Originally Posted by Red90 View Post
Seriously? I call BS.
Quote:
Originally Posted by ontheway View Post
Yeah even with an M pump I don't see the 617 pulling 250hp
The OM617 in USA has the MW pump (5.5mm plungers), specifically tuned to pass emissions testing, not put out any smoke, resulting in LOW performance (183 ftlbs torque and 125 HP at best).

There are Scandinavian OM617 engines special tuned supposedly putting out around 300HP with an M-Pump and 8mm Plungers.

Back in 1976 - 77 The Benz Factory Race team put an OM617 in the C-111 Race Car and won the Land Speed Endurance trials or what ever they called it at the time setting more records for any engine gas or diesel. First year the average speed was 157 MPH over 3 or 4 days, then they later reached 200 MPH. This was with an internal ALDA and 190 HP the first year (1976) and then about 250HP (1977). This was told to be with 6.5mm plungers although it was not publicized. Many believe the 230 HP was a result of more fuel delivered by the larger plungers, but otherwise a stock M-IP and fine adjustments. In 1977, it was believed the factory team used a specially designed M-series IP, something others have been trying to replicate ever since to get high performance.

Dieselmeken (Goran Lindgren) is one of the top M-Series pump gurus today, who has figured how to incorporate an external ALDA and some of his clients drift with OM617 engines at about 300HP, so the story goes.

Howard has an M-Pump with external ALDA and 7.5mm plungers.
Producing 250 HP with his full width intercooler is NOT unrealistic.
I know he smoked a clutch already and has to upgrade to an R380 stumpy.
He emailed me a few weeks ago asking about the R380 stumpy and I sent him the Ashcroft link.

Now that that's out of the way, let me think about how to answer Howard's question.
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  #11  
Old December 6th, 2015, 12:17 PM
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Quote:
Originally Posted by Red90 View Post
Always safest to use a rebuild one.
If he ends up going with a 1.2, no need for a rebuilt in my opinion...save your money and just get a decent low-mileage one from a D1 or early D2. That's what I did...$115 from the Pick-N-Pull, and the fluid that came out of it looked like it was brand new (and had obviously never been even off-pavement).
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  #12  
Old December 6th, 2015, 12:22 PM
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Quote:
Originally Posted by nathanwind View Post
If he ends up going with a 1.2, no need for a rebuilt in my opinion...save your money and just get a decent low-mileage one from a D1 or early D2. That's what I did...$115 from the Pick-N-Pull, and the fluid that came out of it looked like it was brand new (and had obviously never been even off-pavement).
One from a DII won't have the output for the VSS as far as I know. The DII uses the wheel speed sensors for the speedo.
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  #13  
Old December 6th, 2015, 12:31 PM
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Quote:
Originally Posted by scrubs View Post
"Q" ones seem to be the quite one but reading, lack good bearings.
This is the 1st I've heard of bearing problems on the LT230Q. I've got 170,000 miles on mine with no issues so far.

Where did you read about such problems ?
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  #14  
Old December 6th, 2015, 12:33 PM
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Quote:
Originally Posted by scrubs View Post
Hi, before posting a wanted item thought it'd be best to ask for assistance.

Been reading on the LT230 1.2 to replace the 1.6 and am getting a bit confused with all the different types.

It'd be nice to find the Range Rover classic tcase but not sure if it'd mate upto an R380, or the second best tcase, "Q" ones seem to be the quite one but reading, lack good bearings.

Any input could save a lot of hassle and disappointment.

Replacing LT77 LT230 with Roverdrive

Looking to go R380 stumpy gearbox n tcase to work with om617a & 411's with 255's

It's a DD and has been very good with the ex mod set up but now running more HP n looking to put it to better driving use.

Thanks
I think with the power output you are expecting a 1.22 is the way to go.
Jimmy brings up a good point, the DII T-case won't work directly with your spedo, so to avoid fiddling use a RR Classic or DI 1.22.
I know some of the sites can be confusing and your linkage may be different when you switch to the R380.

You might be getting the shaft wear confused with bearings, but just in case the final drive gear is now cross drilled midway to allow oil to get the the splines and reduce main shaft wear.
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"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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  #15  
Old December 6th, 2015, 12:35 PM
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My wife went to a random junkyard and paid $140 for a 60k mile LT230 from a '96 D1. That was 30,000 miles ago and no problems or noise (from the LT230.)

If you are worried about an unknown junkyard LT230, just hang on to your old one until you get tired of tripping over it.

Mike
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  #16  
Old December 6th, 2015, 12:42 PM
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Seriously rebuild it.

I still say BS on 250 hp. Show me someone's dyno.

Anyway. You will destroy an R380. Stock 2.8s kill them.
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  #17  
Old December 6th, 2015, 12:48 PM
scrubs
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Well, Red90, your input is as valuable as others, sorry to see you call your opinion, it's understandable being the internet, thanks to all others too, with your valuable input.
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  #18  
Old December 6th, 2015, 12:50 PM
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Quote:
Originally Posted by Red90 View Post
Seriously rebuild it.

I still say BS on 250 hp. Show me someone's dyno.

Anyway. You will destroy an R380. Stock 2.8s kill them.
John no way with the MW-Pump and 5.5 plungers (USA model),
BUT
They were putting out about 250HP back in 1977, google Mercedes C-111.
let me try and find the link...

(edit) Here's the spec on the C111-3 rated at 230 HP and 297 ftlbs of torque in 1978 (looks like I was a year off from above and 20HP going from memory).
Are you saying that with Today's Technology, it's bull shit to get 20 more HP in 2015?

http://www.superturbodiesel.com/std/...nt.php?aid=641
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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 December 6th, 2015, 01:00 PM
scrubs
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Ummm, this has spun a different direction,

Folks, the om617a is a builders platform for those who wish to go for it, here on this site we keep it to LR related things, I've gone engine wise a different direction and am very happy with it.
It won't take too much looking to see what the om617 is capabilities are with an M-pump, intercooler,larger injectors & turbo can do.

I apologize that I don't stand to share much on my build tho it's a hybrid build and too often called out for truths and beliefs according to each individuals ideas.

So so sorry for asking here tho thank you for the replys
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  #20  
Old December 6th, 2015, 01:00 PM
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Then show me a dyno.
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