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Possibly (probably?) a(nother) stupid question - BMW M52 related


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Hi all,

So. I've just been offered a BMW 528i, which has the M52 engine fitted (I believe) to Landys in Soth Africa at some point. It's very cheap and the engine is good - it's the bodywork that is shot.

The original game plan was to fit the 3.9V8 I have say here, but I have heard great things about Landys with the BMW unit. Any of you folk tried (or had involvement with someone else trying) this swap?

Just wondering if I should take the BMW and upset my wife more or whether it's not worth the hassle.

Cheers,

Simon

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Not done the swap, but had a couple of South African M52 Defenders.  The engine does sit very well in a Defender, is very quiet and smooth and pretty tame and driveable when tootling about, only really getting going when you let the revs run out, then it's a beast.  

Downside to the M52 - spares, sensors etc are stupidly expensive and not readily available now (over £200 for a maf for example, aftermarket stuff largely useless) I had to get most stuff shipped from Germany. 

You can use a lot of parts from the p38 to convert, but will bump up against a couple of probs.   Long term I think the m52 would be a nicer proposal over running a stone age V8 but not so easy to convert. 

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Thanks guys. 

As I have some time constraints (and I have all the bits I need for the V8 and gearboxes) I think I'll go down that line for now but keep the M52 as a possible option for later. I will be able to store the engine for a while I think.

Still very interested to hear more about it though...

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4 hours ago, Retroanaconda said:

Is it @Adam001 that has done one of these?

I took his M52 setup after he's gone for the M57..

Personally I love it, can trundle along at low revs quite happily and will pull to the limiter and seemingly rev forever.

Pulls smoothly and strongly from circa 10mph to 55mph in 3rd without breaking a sweat..

I've got a TD5 rear section exhuast fitted and it is (for a old defender) very quiet at 60mph...

 

FYI, alot of people use the P38 bell housing and an adapter behind between the transfer box from memory, I've used at V8 gearbox and bellhousing with an adapter plate from ashcroft.

This means you can use a 'traditional' clutch arrangment as opposed to the somewhat awkward and torque limited P38 setup.

  

39 minutes ago, Chicken Drumstick said:

I think LR also fitted the 1.6:1 transfer box with the 2.8, so as to better exploit its revs and comparable lack of low end grunt. Meant to be good engines and I believe swapping the intake manifold for another BMW factory item is able to release 20-25hp extra from them.

This is true, but the heater unit would likely restrict the fitment of the, what I think is a slightly larger is size 2.5 manifold...

 

 

 

Edited by tommobot
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1 hour ago, Chicken Drumstick said:

I think LR also fitted the 1.6:1 transfer box with the 2.8, so as to better exploit its revs and comparable lack of low end grunt. Meant to be good engines and I believe swapping the intake manifold for another BMW factory item is able to release 20-25hp extra from them.

The M52 was dreamt up to fill the gap left when the V8 was dropped, and the 1.6 box was to give similar torque at low rpm for people towing fishing boats and offroad caravans through sand etc- I thought it felt way to low geared - 1st gear almost redundant - and a 1.4 would have been absolutely fine.

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6 minutes ago, Eightpot said:

The M52 was dreamt up to fill the gap left when the V8 was dropped, and the 1.6 box was to give similar torque at low rpm for people towing fishing boats and offroad caravans through sand etc- I thought it felt way to low geared - 1st gear almost redundant - and a 1.4 would have been absolutely fine.

I started off with a 1.4 in mine, but at 55/60/65 mph the engine bogged down I felt...

With the 1.6 admitidly its gained a few revs in the upper gears but I don't find first gear short at all, I had a LT77 with a 1.6 and that seemed to only do about 5mph in first wheras this seems to happily go upto 15mph or so?

I am running a Discovery V8 R380 gearbox however, so perhaps the ratios are slightly different to what they are in the factory fit M52s'

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That's really useful to help me make the decision. I've just rebuilt a 1.2 transfer box to go with the V8, but the one in there currently (which really needs a rebuild) is a 1.6 attached to a 2.5NA diesel.

I'll run with the V8. Definitely. 

Thanks everyone.

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