E30 M3 S62 Build - Loads of queries about 4x4 drivtrains

[turbotarzan]

+... Early 750 with working engine and tranny you can get for about 1000 bucks in Sweden. Only the engine? About 500.

[turbotarzan]

If you want V12 power and you have the choice, get a Mercedes V12... FAR superior engine to the M70.

Not if you want turbos. M70 = 8.8:1 Compression ratio, x-manifolds were built for turboconversion, the internals can withstand a pounding like Shyla Stylez...

[The Dark Side of Will]

If you want V12 power and you have the choice, get a Mercedes V12... FAR superior engine to the M70.

[turbotarzan]

I read up on GPO(English is my third language) and yes, that was kind'a what I was thinking. Just need some info about how strong the current should be and so on.
Then I get to thinking; If I'm gonna have MS in the car I might as well go with the M70B50, always been a wet dream to have one with multiple turbines... That engine was built to have turbos.

Could you hook me up with an adapterplate and stuff for the G 265 to E34 TC, Will? Price? Would be easy to fit a 265 to a M70 bell...

Damn, I have too many options, but a midengine M70 biturbo AWD in something tiny would, needless to say, be BadAss...

[The Dark Side of Will]

General Purpose Output
MegaSquirt

[turbotarzan]

If you wanted to use a GPO on the MS to control it, you could do whatever you wanted to with it... as long as you had the sensor data (wheel speed comparisons?) to drive the control strategy.

What is GPO and MS? Megasquirt?

[The Dark Side of Will]

why not use the E30 TC? if you go by the size of the chain, it can handle ~400hp no problem.

the E34 TC is likely one of two things - PWM control, or simply on/off. It shouldn't be too hard to work with that, but I'm not sure it's actually better than the E30 TC. Apparently on the E34 above a certain speed (somewhere around 50-60mph) it stays permanently unlocked.

If you wanted to use a GPO on the MS to control it, you could do whatever you wanted to with it... as long as you had the sensor data (wheel speed comparisons?) to drive the control strategy.

[turbotarzan]

Sounds like "Magnetorheological" technology. It's currently being used in continuously variable computer controlled shock absorbers in Corvettes, Ferraris and other high end sports/luxury cars.

Also available here in aftermarket form, if you have the coin: www.magneshocks.com

The BMW front diffs share some basic dimensions with the 168mm rear diffs. They are smaller and weaker because BMW goes for RWD handling bias in its AWD cars... That means the front axle only sees 1/3 of engine power.

If you're going to do all this fab, build a bracket to mount a 210mm diff right next to the crank pulley.

The thaught crossed my mind. A big diff tho'. Need to decide what car to use and check the space needed. Also found a kind of Chevron B8 body( not sure what it is but pretty similar) and frame for peanuts. Waiting for the dimensions of the whole car.

But If I go mid engine I'll just flip the diffs upside down and drill new ventilation and plug the old:)

[turbotarzan]

why not use the E30 TC? if you go by the size of the chain, it can handle ~400hp no problem.

Because I already have the e34 TC and back end of the s5d tranny. On the hunt for a e34 530i. I was thinking of rebuilding the TC to make it rotate the opposit direction, but if I can't use the x5 diff there is no point. However after research I think I might have figured out how to make the TC split the power 50/50, just have to find a TC-guru and confirm it. Would be awesome to have mid engine AWD with more than 30 something % power to the back wheels:)
I feel I need to start my own thread because this feels semi-off topic...

[The Dark Side of Will]

Sounds like "Magnetorheological" technology. It's currently being used in continuously variable computer controlled shock absorbers in Corvettes, Ferraris and other high end sports/luxury cars.

Also available here in aftermarket form, if you have the coin: www.magneshocks.com

The BMW front diffs share some basic dimensions with the 168mm rear diffs. They are smaller and weaker because BMW goes for RWD handling bias in its AWD cars... That means the front axle only sees 1/3 of engine power.

If you're going to do all this fab, build a bracket to mount a 210mm diff right next to the crank pulley.

[nando]

why not use the E30 TC? if you go by the size of the chain, it can handle ~400hp no problem.

the E34 TC is likely one of two things - PWM control, or simply on/off. It shouldn't be too hard to work with that, but I'm not sure it's actually better than the E30 TC. Apparently on the E34 above a certain speed (somewhere around 50-60mph) it stays permanently unlocked.

[turbotarzan]

Maybe I should just go ahead with the M60 awd superseven that I planned in the beginning.
Did anyone figure out how to get the transfer case electronics to work w/o the e34 abs and whatnot? Guess if one could just figure out the currency(?) the T-case needs to lock upp it would be an easy fix...
I spoke to a retired rallylegend about e34 transfer cases. According to him bmw made a few cases where the discs were replaced by some sort of metal flakes that solidify when you zap them. A bulletproof setup that in the end was too expensive so the production was stopped. Anybody know more about this?

[M3 euro ltw]

Interesting... Do you know if the 4.6 pan and sump bolts on to the M60 engine? Will I have to/is it possible to take the oilpump from the 4.6 and fit it to the m60?
I know a guy who is chopping one up and I think I'll get the parts dirt cheap.

Yes, the oilpan and pump from M62 styled X5 engines (4.4 M62 and 4.6M62) will bolt straight onto the M60 or S62 for that matter. The oilpump sprocket will infact line up nicely with the crank sprocket, and it will all work well.

N62 from the 4.4 4.8 versions of N62 will not bolt up nicely to the M60 or S62. Ask me how I know.

(JK, I've bought a pump and pan from M62 X5 I can not use, its for resale now, and I've also bought N62 parts and they are not easy to make work either. My application is E36 however, so I'm just gawking in from the outside in admiration, and adding info when I can)

Alex.

[The Dark Side of Will]

The front diff bolts to the side of the oil pan... nothing but an e53 front diff bolts on there.

You'll need at least a 188mm diff and at least 94mm CV joints.

[turbotarzan]

Are you going to be turning the engine around "Lambo style" so the pulleys are at the back and the transmission is in front?
The front diff probably isn't very strong. The 168mm diff is only good for ~250 HP in a RWD application.

I haven't done the Quaife reversal, but if you're going to turn it "backwards" you won't have to.



The M62B46 from the E53 X5 4.6is and the M60B44 from E53 4.4i's, E39 540i's, etc. are very close to the same engine.

The N62 is quite a different machine.

DAMN! I was hoping to make it look factory built but if the diff is that weak I should consider placing it past the front of the engine... I need to find a X5 forum to get more info on the front diff and what might swap into it.
Yes, It's lambo style I'm going for. Lambo has a threeway with ariel atom and a lotus seven, their offspring would look like the car I vision building.

By the way, awesome build this E30, hope you get it on the road soon. I have a stripped and gutted E30 with full rollcage but seeing what awesomeness is beeing created in your garage, I can't half-ass a build with a mere 4.0:)
Alltho a mid engine E30 would be somethin' else... hmm...