I looked for my spare engine mount arms, but I can't find them. I had them before I moved, not sure if I lost them or if they're burried under something.
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Originally posted by Nisse Järnet View PostDo you know if the X5 flex disc is thicker than the E34 ix?
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Originally posted by nando View Postdon't know - I think the BMW parts catalogs show the thicknesses? I'm assuming you used the E34 ix flex disc?E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
E30 M50 6 spd 764whp @ 24psi.
E30 M20 6 spd 675whp.
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Originally posted by nando View Postyeah, I get 26mm with a slightly bent tape measure. the battery in my calipers is dead but that's probably close enough.E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
E30 M50 6 spd 764whp @ 24psi.
E30 M20 6 spd 675whp.
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As far as the driveshaft bolts, what if you threaded the holes and put helicoil inserts in? Then have the bolts go through the flex disk first and thread into the driveshaft. No bolt heads or nuts on top. You would just want to locktite the bolts so they don't come loose.Last edited by AndrewBird; 11-26-2015, 08:03 PM.
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Originally posted by NitroRustlerDriver View PostAs far as the driveshaft bolts, what if you threaded the holes and put helicoil inserts in? They have the bolts go through the flex disk first and thread into the driveshaft. No bolt heads or nuts on top. You would just want to locktite the bolts so they don't come loose.
You don't want to turn the bolt or nut that directly contacts the flex disc, it can cause the metal spacer/sleeve to rotate and unbond from the rubber. This applies to a regular through bolted flex discs as well, always spin the end contacting the drive flange.
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Originally posted by Nisse Järnet View PostOk thanks! E34 ix is 28mm.
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Originally posted by nando View PostI re-measured with a caliper and they are 28mm. The e30 ix is 19mm.E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
E30 M50 6 spd 764whp @ 24psi.
E30 M20 6 spd 675whp.
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Different rubber compund or something?
Btw the E34 ix lacks a rear disc, its only got one between the gearbox/TC and front diff. The rear drive shaft/prop shaft also got a centre support and a CV at the rear diff.E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
E30 M50 6 spd 764whp @ 24psi.
E30 M20 6 spd 675whp.
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Originally posted by nando View Postyou can't do that anyway, there's no room to push a bolt in through the other side of the flange.
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the flange of the front diff is threaded actually. I don't remember there being issues with the flex disc sleeves rotating while tightening the bolts down.
now that I think about it you have a good idea. the only thing is you'd usually remove the centering pin to pull the shaft, and you can't do that with the flex disc installed. maybe there's still just enough room to slide the bolts out, or at least far enough away to remove the disk. I'll have to look at that.
if that were the case, you could move the diff back the required 1 1/4" and not have to mess with that one oil pan bolt. or still modify that bolt, but have a little more clearance to work with.
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