Any concern to using these flywheel bolts?

[patssle]

I put on my new flywheel (228mm w/ ring gear) from Kennedy Engineering onto my 3.0L motor. The bolts are torqued to 66 ft lb. It looks like the bolts aren't fully flushed with the flywheel but they just have a small washer type raised surface on the head of the bolt (doesn't extend to the edge of the bolt so it appears there is a gap) that mates with the flywheel. The profile of the head of the bolt is actually smaller than the Porsche standard flywheel bolts so they definitely won't interfere with the clutch disc. They are high strength too. I see no reason not to use them?

[patssle]

Bump!

[Targa Me]

If one of those bolts comes loose you're gonna have to go through a lot of work to replace them. I would use the standard Porsche bolts, it's cheap insurance.

[JJ 911SC]

Originally Posted by patssle

... The bolts are torqued to 66 ft lb. It looks like the bolts aren't fully flushed with the flywheel but they just have a small washer type raised surface on the head of the bolt (doesn't extend to the edge of the bolt so it appears there is a gap) that mates with the flywheel...

The small washer may have an impact on the torque.

[HawgRyder]

I know the type of bolt you have...the raised section cuts down on the mating surface...so the "grab" of the head is less than it should be.
In a case like this...I like to have the edge of the hex touch the surface so it can build up a little ridge as you torque it.
That ridge adds to the grip of the bolt (torque wise) and prevents the bolt from coming loose.
I believe the standard Porsche bolts do this.
Go with Porsche bolts....and...new ones each time...cheap insurance.
Bob