Isuzu 4BD1T to R380 - Defender Source
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Old April 13th, 2010, 08:37 AM
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Bill Adams
66 109 sw 94 lwb
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Isuzu 4BD1T to R380

I know that Rover used this combo in Oz for LT230/R380. Is there a source for conversion parts here or in Oz or the UK for this? Alternately, does anyone have any info on the Cummins 4BT to Rover connectivity? Many thanks.

------ Follow up post added April 13th, 2010 09:47 AM ------

I see that conversion bits are unobtanium. Moving back to the Tdi pathway.

Bill Adams

1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"

All my troubles are Rover
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Old April 13th, 2010, 09:27 AM
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I was trying to find out about that years ago.. From what I remember, it was used in military setups in Oz.. I didn't think it was the r380 that it mated to, but I'm probably wrong. It's a pretty boss motor, if you learn anything, be sure to post. I bet there are a lot of fellow oil-burners here that would be interested too...

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Old April 13th, 2010, 09:43 AM
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I think it was mated to the LT95. Paul Clay (GRNRVRS) is currently doing this now, I think. I have been waiting for him to post some info. This is what he wrote me a while back when I asked him about his LT95 rebuild:

"I have an Isuzu 4bd1T which is a whole different animal. In AUS LR used the LT95 behind this engine for the civvy market, but the AUS MOD had a few upgrades/modifications. These included 1) .996 hi range 2) metal gears in the transmission oil pump and most importantly 3) tapper roller bearing (TRB) on the intermediate shaft of the transfer case. Behind the 3.9L 4BD1t, the torque pulse ate up the shims used in a regular LT95."
1983 110 Rebuild
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Old April 13th, 2010, 09:49 AM
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Paul Clay
1983 110
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In Oz they used either an LT95, LT95A or LT85, not R380, however, a few folks have modded an R380 bellhousing with good results. Over the past year, I have been fixing the UK bodged adaptation of a V8 spec LT95 to 4BD1T. The proper factory bits are now in place to mate a LT95A to 4BD1T. All of the bits are available, some in the US, most is Oz. Spendy but available. While the rover Tdi (200 or 300) is all fine and good, I'm quite chuffed with the 4BD1T.


p.s. my old bits are for sale cheap if anyone wants them (Flywheel housing, bodged LT95 bellhousing, matching flywheel...).
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