Need torque spec.

[mazur]

Can someone tell me the torque spec for the subframe? Thanks.

[FredK]

The M14 locknuts take 103 lbs-ft if you are using the stock rubber bushings.

[mazur]

So it would be different with Powerflex's?

[AndrewBird]

103lbs is pretty tight. I would just tighten then as much as you can without shearing the bolts. Just tighten them down "tight".

[Mr Deagle]

front or rear

[FredK]

It's gotta be rear, there are no Powerflex bushings that go on the front subframe!

It's a beefy bolt at M14. It laughs at 103 lbs-ft. I believe I've seen different torque specs for polyurethane bushings. Maybe it'll say something about it in the install directions.

[mazur]

It's gotta be rear, there are no Powerflex bushings that go on the front subframe!

It's a beefy bolt at M14. It laughs at 103 lbs-ft. I believe I've seen different torque specs for polyurethane bushings. Maybe it'll say something about it in the install directions.

Powerflex supplying install instructions? They just leave a note saying "use a lot of lube and goodluck!" :p

They are actually already installed but havn't torqued them down yet.

[euroshark]

Im gonna go with Andrew here, just go till they are nice and freakin tight. A 14mm bolt should easily take twice or three times that torque spec!

Torque specs are really crucial on things like wheels and cylinder heads, on some other things they are just being anal

There is something to be said for attention to detail however...

[FredK]

Ya, it's not gonna matter if you tighten it 100 or 120 lbs ft. Just use a cheater bar and lean into it.

Quarter turn before it breaks.

[BimmerToad]

Anyone have the torque spec for the front subframe bolts? Can't find it in the Bentley manual.

[dark89e30]

Anyone have the torque spec for the front subframe bolts? Can't find it in the Bentley manual.

Bentley says 30 ft lbs for the M10s and 56 for the M12s. Its on the last page of suspension and steering...

[BimmerToad]

Got it, must have overlooked that table. Thanks!