Outer Limits 4x4 Board

Hey Bush65, I reckon you're correct on the flywheel housing, at least some are different, the guys that bought my standard Land Rover normally aspirated 4BD1 are having all sorts of problems trying to get one that'll fit the LT85/95 (I grabbed it when I changed my engine over). Maybe the ZF fits straight on the standard Isuzu truck housing??...

What's the word on the 4BD1 to ZF Auto mating? I've a 95 Disco that I'm looking to swap the V8i for a diesel. Is there a bellhousing available? How do you go about mounting the engine? I've been looking at a kit from MD Engineering in the UK that mates the 4JG2 to the ZF. Is anyone familiar w/ that kit?

mitche27 wrote:What's the word on the 4BD1 to ZF Auto mating? I've a 95 Disco that I'm looking to swap the V8i for a diesel. Is there a bellhousing available? How do you go about mounting the engine? I've been looking at a kit from MD Engineering in the UK that mates the 4JG2 to the ZF. Is anyone familiar w/ that kit?

Dont know of anyone that has used a kit here but the isuzu 4bj1t would be the preferred choice of engine - 2.8 tdi from isuzu/holden jackaroo, rodeo, iszuz trooper in some countries.

Ok, Mitche27.

The ZF to 4BD1 didn't work well due to reliability. My 4BD1 puts out about 500Nm of torque, and it has trashed 3 'boxes. I have now gone to a LT95 manual, and I'm putting up with it because reliability is more important to me than having an autobox. (Only JUST, though)

If you have a Nat. aspirated engine, then try it, but I still maintain that the torsional vibration of these engines is the primary cause of failure.

I had pieces of clutch plate tag and a stripped lock-up clutch in the sump within 10,000km.

It is a pity really, because I couldn't recommend the drive experience highly enough. The combination of a torquey turbo diesel and auto is incomparable to a manual box.

I'm thinking of a TH700R4 or similar in the future, when I can afford the time and $$$$

JC

what are your thoughts on trying a tf727 behind it?

rover one would bolt sraight up.

only trouble as i understand is that the rover ones didn't get such beefy internals as dodges, however there seems to be a huge aftermarket for them, with overdrive or gear splitters available. they dont come with lockup as standard, but i think it can be built in.

i think they are used behind cummins 6bt's in dodge trucks (could be far wrong here) which should put out a fair level of torque.

sound sgood on paper, but nobody seems to mention them much. are there issues in practice?

callum wrote:what are your thoughts on trying a tf727 behind it?

rover one would bolt sraight up.

only trouble as i understand is that the rover ones didn't get such beefy internals as dodges, however there seems to be a huge aftermarket for them, with overdrive or gear splitters available. they dont come with lockup as standard, but i think it can be built in.

i think they are used behind cummins 6bt's in dodge trucks (could be far wrong here) which should put out a fair level of torque.

sound sgood on paper, but nobody seems to mention them much. are there issues in practice?

http://www.outerlimits4x4.com/PHP_Modul ... =ive+given

Yes Callum, I'd thought about this too, but I 1) Can't spend anymore $$$
2) can't spend anymore time, and 3) the manual box is already in.

I will say however that it will be an easy conversion back to auto if I get a rush of blood and decide to source a TF727...

JC

you can up the cluch pack on a 727 easy.that clutch pack is the same as what you get behind a 426 hemi or 440 wedge.you get all the parts and how to do it with the box rebuild kit.my old man just did one for his 360 thats in his rangie.just run the biggest cooler you can.

727 might be strong and all but if its going to be a touring rig then 4 or more gears is what you want...

Maggot4x4 wrote:

callum wrote:what are your thoughts on trying a tf727 behind it?

rover one would bolt sraight up.

only trouble as i understand is that the rover ones didn't get such beefy internals as dodges, however there seems to be a huge aftermarket for them, with overdrive or gear splitters available. they dont come with lockup as standard, but i think it can be built in.

i think they are used behind cummins 6bt's in dodge trucks (could be far wrong here) which should put out a fair level of torque.

sound sgood on paper, but nobody seems to mention them much. are there issues in practice?

http://www.outerlimits4x4.com/PHP_Modul ... =ive+given

having read that thread and (amazingly) not noticed that huge block of text and those pictures i feel rather stupid.

some good info there.

anyone got any pics of a rover 727 and lt230 be interested to see how they fit together. I'vre seen a few overdrives lie th e518 one, but they're pretty long.

justin, i thought youd acquired an allison trans? or who's was that pictured in the thread? sorry to hear your out of rover dollars although at least you're running again.

seems that a built 727 might be a good option for the 4bd1 with lockup and a fourth gear. i'd quite like a hsot of a manual shift kit on an auto as well, not sure how it would be to drive. i find sequentail sucks on mercedes, but maybe this kind of manual auto would be good.

callum

A while ago there was a post from someone who had fitted a 3.9 to a 727 in a scout and apparently it flew.

About the 3spd 727, or a LT95:

The gearing issue is sorted by fitting 35's.....I had to if I was going to run a 4 spd manual, or a 727 and 1.000:1 LT230 high range gears.

- Plus they will help a little in the rocks and mud.....


JC

justinC wrote:
The gearing issue is sorted by fitting 35's.....

- Plus they will help a little in mud.....


JC

Don't count on it, your fitting MTR's arn't you?

Yup, but I want to hear myself think in the vehicle, otherwise I'd be fitting 10.5 35 ET2's Ash.

BTW, I see you had a good weekend, planning another??

JC

justinC wrote:Yup, but I want to hear myself think in the vehicle, otherwise I'd be fitting 10.5 35 ET2's Ash.

BTW, I see you had a good weekend, planning another??

JC

Justin - what happened to the Allison auto idea - was there a problem?

justinC wrote:Yup, but I want to hear myself think in the vehicle, otherwise I'd be fitting 10.5 35 ET2's Ash.

BTW, I see you had a good weekend, planning another??

JC

When are you free? Flights are cheap.

Air freight the Rangie?!!!!!!!!!!!

I won't go without my baby!!


JC

ISUZUROVER wrote:

justinC wrote:Yup, but I want to hear myself think in the vehicle, otherwise I'd be fitting 10.5 35 ET2's Ash.

BTW, I see you had a good weekend, planning another??

JC

Justin - what happened to the Allison auto idea - was there a problem?

Hi Ben,
Yes the only problem came to when I rang up to actually order the box, and got them to measure the flange diameter, it was 12mm too large, so the flywheel housing on the 6BB1 IS different, and faced with the idea of adapting both the gearbox and the transfer, I stopped right there.

JC

justinC wrote: Hi Ben,
Yes the only problem came to when I rang up to actually order the box, and got them to measure the flange diameter, it was 12mm too large, so the flywheel housing on the 6BB1 IS different, and faced with the idea of adapting both the gearbox and the transfer, I stopped right there.

JC

That is a shame, I am sure there were some 4cyl engines that came with autos - maybe only in the US though...

Actually we had a 4cyl auto Isuzu in oz, but it is the later scitec type engine, the block is bigger and totally different, therefore not in the ballpark for me.

Pity eh?

JC

Justin, have you seen this site???

www.isuzudieselswapper.com

ISUZUROVER wrote:Justin, have you seen this site???

www.isuzudieselswapper.com

Transmissions: GM 200R4, 700R4, 4L60, 4L60E, NOTE: These transmissions are included in the GM vehicles above. They are also used for non GM conversions but require driveshaft modifications. Also, the "E" at the end of the transmission model indicates electronic shifting. All other models use a mechanical shifting mechinisism.

ISUZUROVER wrote:Justin, have you seen this site???

www.isuzudieselswapper.com

I wish you hadn't shown me this Ben... ARRRRRRRRRRGHHHHHH!!!!

Too late now, but I'll probably have to make up the unit and slip it in next year.


JC

Go on Justin, you know you want to...

Do it, Do it !!!.

ISUZUROVER wrote:Go on Justin, you know you want to...

as i read jc's last post i was going to post that !

ALLRIGHT!!! I will.

Just give me time to recover from the saga, and at least use the vehicle for a while first. I drove it this evening with the 4 spd manual, goes like anything, and will pull from 16rpm in 4th!!!( Slight exageration...)
3rd gear is a bit dodgy ATM from 4th to 3rd, I'll have to put synchros in next week.
But I still prefer the autobox.

JC

justinC wrote:ALLRIGHT!!! I will.

Just give me time to recover from the saga, and at least use the vehicle for a while first. I drove it this evening with the 4 spd manual, goes like anything, and will pull from 16rpm in 4th!!!( Slight exageration...)
3rd gear is a bit dodgy ATM from 4th to 3rd, I'll have to put synchros in next week.
But I still prefer the autobox.

JC

I will let you do mine first if you want as an engineering exercise, FOC of course

so you think I need any MORE engineering practice???

And my wife says that she thinks FOC means For Only Cash.


JC

justinC wrote:so you think I need any MORE engineering practice???

And my wife says that she thinks FOC means For Only Cash.


JC

Strange Rover wrote:

Brett S wrote:Strangerover - i thought there must be a reason for being so long but from the pics couldnt realy see. Could you tell me if you modded the existing output shaft or get new ones made up. Also if you could give me a price on the kit (shaft and adapter)

T700 has a stock output shaft, we just press and weld a new splined section into the rover input gear to mate up with the t700. Would do the adapter and modify your input gear for $600.

Sam