Used 993TT Head Stud for a 3.0L?
 

I am not sure I would do it, but if I found a set of 993 TT head studs with a known history would they be good for a mildly modified 3.0L?

I am aware of Supertech, ARP etc. I am exploring it as a cost effective idea. Thanks for your time.

Threaded?, if so its a go.Sam.

Thanks Sam. Why?

I found this thread - but nothing on reusing them;

http://forums.pelicanparts.com/911-engine-rebuilding-forum/374043-993-head-studs.html

I've reused 993TT studs no problem and run a lot of boost.

My logic is this - all the small parts add up in cost rapidly. Perhaps Suretec or similar is overkill. 220 hp would be good.

Would the REUSED 993 TT studs be better than NEW steel studs?

On a 3,0L aluminum case motor just replace the lower studs with steel. Easy, inexpensive, and bullet proof. No reason to over think it. Check the used parts classified, used steel studs show up there from time to time.

If mag case, definitely Dilavar to mitigate stud pull out of the case.

For aluminum, steel will not expand as much putting more clamping force on the heads. There's enough margin in the threads of the case and tensile strength of the stud to not be a problem.

So either is fine. I would not hesitate to reuse 993TT Dilvar's as long as there isn't damage to the shrank possibly causing stress risers.

I will keep a look out for good 993TT head studs with a known history.

Thanks for all the replies.

There’s some for sale right now in the for sale section for $250 IIRC

Thank you. I did see those. I have PM'd the seller.

I have committed to the old steel head studs. There is a well known engine builder using them in E class race cars. That is a good enough endorsement for me.

Life span of the stud was suggested as being less - perhaps 15 years.

Do you mean the divilars will last 15 years?

Well, not sure if the 3,0s are harder on cylinders and studs. When I rebuilt my old motor back in 1985 I re-used the original steel studs, top and bottom. It was a 2,2 but updated with 90mm Mahle pistons and cylinders. Now after three decades and 100K miles the motor still runs perfectly. YMMV.

The stud used for the 2.7 and the upper 3.0 engines was steel. I believe the lower studs (prone to breaking) were the dilavar studs. I will use all steel.