Flywheel bolt torque?

[JFP in PA]

You should be using some type of lubricant on any torqued fastener, be it anti seize, oil, or thread locker. I’m sure there are small differences between each, but that there would also be a larger variance if the fasteners were assembled dry. I think ARP did a “white paper” on this subject several years ago, so you may want to check their site for more info.

In any case, by far the most accurate way to assemble with fasteners is to measure bolt stretch rather than torque. This is one of the reasons why Porsche uses “micro encapsulated” single use fasteners in several locations (like the flywheel), and uses torque specs followed by “tightening angles”, which are attempting to take into account the stretch factor………

[spendy]

Originally Posted by JFP in PA

This is one of the reasons why Porsche uses “micro encapsulated” single use fasteners in several locations (like the flywheel),

Is this true with all engines? The OEM FW bolts I ordered for my 2.5 are not micro encapsulated. 999 073 092 02 Did I get the wrong ones?

thanks

[PorscheFan5]

Thanks all.

[JFP in PA]

Originally Posted by spendy

Is this true with all engines? The OEM FW bolts I ordered for my 2.5 are not micro encapsulated. 999 073 092 02 Did I get the wrong ones?

thanks

Not all engine's use them, but the M96/97 did. The bolts should have a blue-green area on the treads that is the micro encapsulated thread locker. If they do not, just use Loctite and you will be fine.