200di conversion again.

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dr pepper

dr pepper

New Member
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lancashire
Hi chaps,

I'm well used to kit cars and the likes but not landy's, thanks to the mrs we are going to get a series to play with, pref a swb but we'll see whats available cheap.
I intend to do a conversion to a modern diesel motor, I allready have a pugrot xud 9 engine left over from a project, however I hear these are naff for the landy, not sure why.
So a 200di from a knacked out disco seems to be the way to do it, the di fits the series gearbox with the usual mods to the flywheel case, but what I was wondering and cant seem to be able to find is what about gear ratio's, if my landy is a petrol and I stick the di in I'm gonna have totally wrong ratio's with the petrol box/diffs, hows this corrected, is it a mod to the transfer box output gear, or do I need diesel ratio front and rear diffs.

There is available cheap at the mo a converted landy which has the ford 3 litre, this produces max torque at 2200 revs, so this might just be the correct box for the di as is.
Your knowledgeable advice appreciated.

Sean.
 
google "200di into a series." or try glencoyne engineering as they did the conversion. the idea is to do away with the turbo in order to keep it safe and driveable. in everyday use. IIRC they suggest an overdrive be fitted. Diffs are kept as std I think?
 
Land Rover never bothered changing the ratios between petrol & diesel! (ignoring V8s, and that's probabaly the best thing to do)
Having said that the ratios for series motors and 90s were different, fitting 90 diffs will go a long way. Lots of threads on LZ about it.
 
Well that will have confused him!
Best is to find the opinion of those who have actually done it. It will probably be just as contradictory!
 
Flippin heck that was quick, much better then the other forum I was using.


OK then so its bung in the dizzy engine from the disco, surprised to hear that the petrol and diesel had the same drivetrain, ah well.

The worst that can happen, well a trike I built going back a few years I screwed up with the box and rear axle from different cars, and when I drove for the firsat time I shifted first and the sodin thing went backwords, not an issue here though, unless I chose an engine that goes the other way like these weird japs do.

so lookin out for a series landy then, been offered one at 600 quid which ahs the ford cologn engine, wondered about putting a tranny engine into that as the cologne is the same bellhousing mounts as the tranny.
does 600 quid sound reasonable for an 82 with reasonable original paintwork and a sound chassis and bulkhead?, and an overdrive and a box of spares including boxs (also with overdrives) and a few other bits.

Thanks guys, I've found a better forum here I think.
 
bite a lemon, it'll remind you.

So its not such a hard job then, and using the series manifold kinda makes things a lot easier.

Still looking for a landy then, off to look at a 109" tomoz, will comment on my findings.

Sean.
 
Last edited:
No thanks, just turned one down, and it was only 500 quid, and it was a cologne not an essex.
any disco bits like an engine, or series gearbox/overdrive may be interested, unless your a zillion miles away.
 
i figured i might as well add my (limited) experience of landys, bought my first ever roughly 4 months ago (88" Series) rough as a bears arse and dog tired (i also paid too much really)....

anyway i got the welding and odds and sods sorted then got my mot, i then drove around for a few weeks with a dog tired 2.25diesel under the lid, it was fun but i soon got fed up of not being able to get out of busy junctions and limited to 45mph thrashing it...

so i hunted for a 200Tdi Disco and found one with 165k miles on the clock with a busted clutch arm which i ripped to pieces including pulling out the 3.54:1 diffs to replace my 4.7:1's....

i eventually got round to swapping the engines after a couple of weeks which took me 3.5 days (nothing else to do), i didn't drill the bellhousing or flywheel housing (probably an error on my part) and i kept the turbo, made my own exhaust flange and exhaust out of scrap pipes (no silencer) ....

drove it round on the original diffs for a couple of weeks the accelleration was fun but i was permanently concerned i might put too much thru the transmission and bust something (halfshaft) so i eventually changed the diffs as well ....

it now cruises comfortably at 55-60mph with plenty in reserve if i really want to start thrashing the engine, i reckon it'll pull an overdrive on the m/way as well without too much trouble....

one thing i'd suggest you find is a Defender airbox which with a little modification (grinding/welding) can be mounted on the timing cover (you'll want a disco airbox connector and make a reducer ring), giving a couple of bonuses, primary one is it appears to breathe properly and secondary it'll be easier to fit a snorkel should you wish to (i tried a pug 406 airbox but it clogged too fast) the disco airbox is even bigger but that presents it's own problems with mounting...

200Tdi is apparently easier to fit in the 88" chassis than the 109" but as you probably already know, by binning the turbo it also fits in the 109" with relative ease...

anyway best of luck with your search
 
Davec said:
Why?
Click to expand...

the 109 chassis is deeper than the 88 , approximately 2" difference as i understand...

the 109 chassis can be scalloped to allow clearance for the turbo or you get the manifold off one of the other landrovers (defender or 300Tdi i believe, not sure) which relocates the turbo
 
Now then thats interesting, the best bit of info so far.
Firstly I didnt know the diffs were directly compatible between a series and a disco, or that the disco diff gave a better result.
And I didnt know about the chassis differences, I'm looking at a lwb at the mo, I thought this was going to be a better idea as rather than pay out for an overdrive I was thinking of sticking the r380 box from the disco in the series, which is a bit easier on the 109 as its a greater distance to the input of the rear diff accomodating the longer r380 box, this is obviously at the expense of deeper chassis rails, also explains the big diifo in weight between the 88 and the 109.
I do intend on modding the flywheel housing, allthough I wont be counterboring, I'll be countersinking a bit easier.
This is assuming a disco comes up at the right price, seems like here in the north west they are made from either gold dust or unobtainium, my project might just be a tranny engine conversion, I'm a tighta~~se I know.
Thanks guys.
 
Not all Discovery Diffs are directly compatible with Series motors. Later ones have different splines for the halfshafts, some have 3 bolt input flange instead of 4 bolt.
 
ok so how do you recognize a compatible diff, dont spose you could go off just the no. of bolts, dont spose a seller of a vehicle would be right pleased about taking the diff apart before you bought the vehicle.
is this what they mean when they say 4 bolt power steering?.
 
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