P38 Diesel conversion

paradigm · Feb 22, 2012

Hello I am new to this forum. But not new to Land Rover.
I have recently converted my 1997 4.6L HSE to a 6.2L J-spec Hummer diesel. the swap itself was relatively easy.

infamous 6.2L diesel engine

here is the flywheel with the plate of the P38 welded on to accommodate the P38 torque converter...

an adaptor had to be made in order to fit the transmission to the bellhousing

The torque converted of the 4.6L Is larger than the 3.9L torque converter, so you will need a larger adaptor plate between the 4L60E bell housing and engine

I made a spacer to be able to see what is going on between torque converter and flex plate and the little spacer disk...

6704nathan · Feb 22, 2012

very interesting conversion keep posting the further you get with it!!

Chrisfrain2007 · Feb 22, 2012

What power is the engine?

Datatek · Feb 22, 2012

Looks like a very heavy lump, would not be my choice of engine but good luck with it.
Question is, will it pass the new MOT?

Chrisfrain2007 · Feb 22, 2012

I'd like the tdv6 conversion myself

Datatek · Feb 22, 2012

The gearbox will never stand the torque! Is it a ZF4HP22 or a ZF4HP24 by the way?
a 22 should fail pretty quickly, a 24 will last a little longer.

Chrisfrain2007 · Feb 22, 2012

Should use auto box from the hummer,

dougdotcom · Feb 22, 2012

Well done so far. keep the photo's comming.

Might get this Hummer engine and see if it will fit

ShengQi 26cc Petrol Engine (baja hummer f150 traxxas king hpi 5b 1/5 fg aowei) | eBay

Davie F · Feb 22, 2012

Ha ha doug that's a Pajero engine surely, would like to see the photo's of the hummer engine in the engine bay, also the electronic problems encountered, looks like an interesting project though, seen one on 4 x 4 forum where a guy fitted a nissan 4.2 to a classic.
Davie

wammers · Feb 22, 2012

Really the question that is on everyones lips is, WHY? The engine must be worth more than the car.

paradigm · Feb 22, 2012

WOW... this many replies so fast

well first off ,why I did it:
-a J spec 6.2L diesel can be bought right now dirt cheap (guaranteed mileage between 10.000 - 40.000 and pressure tested), I bought mine for $1.100.
-these engines are emission exempt in the US, meaning even in california you got nothing to worry about
- parts are very cheap and any autostore has them
- the diesel runs on 4 wires, glowplugs, starter, alternator, and fuel shut off
- you can drive , JP 5/8, diesel, diesel-engine oil mix, diesel -transmission-oil mix, even mc donalds frying grease.

the engine has 165HP and 330lbs torque, which is not that much different from the 4.6L
a friend of mine put one in a classic with a ZF22 and has been driving something like 20.000 miles without a problem so far, including towing his boat.

the dimensions are about the same as the range rover engine.

and in she goes

fits like a glove

in she went... and is running

paradigm · Feb 22, 2012

Chrisfrain2007 said:
Should use auto box from the hummer,

Could have used that autobox, but I would have to make some more adapters to mate the transmission with the transfer case. and so on...

paradigm · Feb 22, 2012

Davie F said:
Ha ha doug that's a Pajero engine surely, would like to see the photo's of the hummer engine in the engine bay, also the electronic problems encountered, looks like an interesting project though, seen one on 4 x 4 forum where a guy fitted a nissan 4.2 to a classic.
Davie

an english fella fitted a 350 with a megaquirt system piggy backing the ECU
He retained a crank sensor , fitted a 36-1 trigger wheel to the crank, and connected a TPS to keep the rover electronics happy... works like a charm he said

Henrik97 · Feb 23, 2012

paradigm said:
the engine has 165HP and 330lbs torque, which is not that much different from the 4.6L

OK, so it's obviously not turbocharged. A neat conversion, but even better with a blown engine of 250hp or thereabouts. I guess with a turbo the resulting torque would shred the gearbox...

So you had no problems with interface to the instruments, anti-theft system and diagnostics?

Cheers,
Henrik

paradigm · Feb 23, 2012

if you use a toothed trigger wheel the tachometer will still work
the speedo gets it's input from the ABS sensors
the BeCM will get input over the alternator , that the engine runs.
retain the engine ECU

you can use a manual trasnmission, that would be aboe to handle the turbo load.
something like a NV4500 (5 speed) or a T56 (six speed)

cheers
~michael

Datatek · Feb 23, 2012

Anything is better than a LR V8 petrol I guess.

362bkr · Feb 23, 2012

Datatek said:
Anything is better than a LR V8 petrol I guess.

agreed :clap2:

paradigm · Feb 23, 2012

I can get the range rover very wet with this engine.of course the engine would be the only thing running lol. I am planning to get rid of the becm, too

paradigm · Feb 23, 2012

To be able to fit the snorkel a bit easier and for more clearance above the axle I would like to lift the body for an inch...
Did someone here done an inch or two inch body lift? did you have to motify the steering?
i doubt one would have to, but who knows...

paradigm · Mar 4, 2012

here is a video of her running
Range rover p38 diesel start up and running - YouTube
and one of her driving
6.2l Diesel p38 driving - YouTube

P38 Diesel conversion

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