Bilal928S4

1990 928 S4 what is the cam pulley bolt torqued down to?
Do you just torque it down or do you need to hold the washer bolt and them torque the bolt?
Thanks

blown 87

Hold the nut and torque the bolt, the torque is in the WSM, which you absolutely need if you are going to work on a 928.

Bill Ball

+1 to what Greg said. ALSO...although holding the large washer is intended to keep the cam and gear stationary, the cam and/or gear often will move a few degrees or more as you apply the proper torque to the bolt. You really need the PorKen tool to check the cam timing AFTER you tighten the nut, unless you have the cam covers off and can check the cam timing per the shop manual or other technique.

BTW, the torque value is 47 ft-lb.

blown 87

Yea, get the three DVD set from one of our vendors, it has a movie of head removal and install and it really helps to be able to see some one actually doing it.

Bilal928S4

yes, I have the WMS, but didn't have time to look it up. Wanted to know if somebody had it handy. Yes I have the Porken 32Vr that is what I used to check timing and now want to torque them down.

Bilal928S4

The WMS says 295 Nm, could that be correct? before I break another bolt.

Mike Simard

Yikes! It's 65nm IIRC. Where did you get 295nm from? The only thing I can think of to be that tight is the drive axle at the hub.
Did you break one?

blown 87

No, you are looking up the wrong thing if you went 217 FT, which is what that is, then sorry but you deserved to break a bolt or a cam if you try to put that much torque on a bolt that small.

If you are in a hurry do not work on a 928, it will not end well I promise you that.

Bilal928S4

it's on page 10-05 volume 1 of the WSM. Pulley 295Nm

blown 87

That is for the crank bolt, an it plainly says that it is for a 18x1.5 pitch bolt, which is a far cry from the 10x1.5 bolt that you are talking about.

Always look at the bolt size and do a mental comparison to what you are going to tighten.

jon928se

Thats the crank pullley setting. Is in the crankcase part of the WSM.

You need to look in Section 15 of the WSM - Engine / Cylinder Head, Valves

Bilal928S4

Thank you all.

Tony

48ft/lbs

Landseer

Nice consolidated torque figures are in Tech Spec books. Just watch the units.

Find a post by Andrew (AO), click on the links in his signature line.

Bill Ball

My point above is that you need to use the Porken tool again after you finish torquing.