Dave928S

FIFY

Black Sea RD

Get a good quality torque wrench if you work on your 928 and use it.

This will also help immensely with keeping these types of failures from happening.

SeanR

The bolts

depami

Thanks Sean.

And now for a little OT.

I've always loved your avatar. Check out this bad boy:

Don't have one but I recently acquired a DP-12. The DP-12 is pretty gnarly.

BIMMERMIKE

Where's the access plug for an automatic?
Is there a need to remove exhaust and heat shields?

Mrmerlin

access for the auto is hidden under the heat shields for the resonators ,
so you can move the heat shields away from the mounted position and get to the rear pinch bolt.

that said if the MMs are good, then you may not have the room to do this as the pipes will be closer to the shields thus requiring to drop out the rear pipes to gain clearance

worf928

Bump back to page 1.

Found a young S4 with a loose rear pinch bolt a couple of weeks ago.

Tony

Beside a bump for a good thread...

Quick and dirty.... what are the specs on the bolt.. M..?.....1. ?... grade...

im looking through the WSM..and PET...and they only describe it as “pinch bolt” unless I am missing it , I can’t find the spec on it..I know the TQ value.

heading to my local nuts and bolts place for replacements if I can tomorrow

SwedeInSiam

M10x45
grade 12.9
Threaded part is 15mm

Rob Edwards

M10 x 45, grade 12.9. 931 421 240 00

EDIT: Argh, took too long to go measure one. I like 66 ft-lbs for these.

FredR

Tony,

Suggest you get these from Roger unless you cannot wait. Correct steel grade very important.

worf928

If you've ever had to drill-out one of the stock small-and-shallow head pinch bolts because the last guy didn't replace an almost-rounded-out one, you come to appreciate the 'normal-head-size' 12.9-grade Alan socket bolts that can be 'locally obtained.'

But, yes, 12.9 is the grade of steel. Grade 10 shalt thou not use, neither use thou grade 8. Thou should not browse grade 8 or grade 10 bolts, lest thou immediately thereafter browse from the grade 12.9 bin. Once a grade 12.9 bolt is selected then hand thou the bolt towards thy cashier, who if being not naughty shall charge you for it.

Tony

well played meh Lord.


He who thou shalt be called Brother Maynard..

worf928

"'tis only a flesh wound" is something to keep in mind when working on 928s.

skpyle

Now go away, or I shall taunt you further...