10mm Inconel 625 Head Studs for Porsche sub 1000whp

10mm Inconel 625 Head Studs for Porsche sub 1000whp 996TT, 997.1TT and even GT3!

These are our best 10mm Inconel 625 Head Studs for Porsche sub 1000whp.  You’ve already proven you don’t compromise by owning a Porsche, so don’t fall short where it really counts!  We’ve developed these for builds not requiring the 1000+whp 12mm head studs, but still wanting the best for your engine.

Why do I need these head studs if I already have 10mm head studs?

• Stock 10mm head studs are ok to a max of 900 Nm or 650 ftlbs depending on the fuels you’re running.
• Other aftermarket 10mm head studs are recommended to max 800ftlbs.
• In testing these were able to torque as high as 75 ftlbs while still retaining a linear increase in clamp load vs. torque.
• These have the largest mid section that still works with oem head gaskets, liner carriers and heads.  no machining required.

What do they fit?

• 2001-2005 Porsche 996 turbo
• 2007-2009 Porsche 997.1 turbo
• 2000-2011 Porsche GT3 3.6, 3.8 and 4.0L

Do they require machine work?

• These 10mm drop in replacements do not require machine work to the case, liner carriers or cylinder heads for the larger threads and clearance that’s required with 12mm style.

What are the torque recommendations?

• Settle at 15ftlbs, increase the torque to 30, 45, 60 then final torque.
• Final Torque to 65-70 ft-lbs following oem sequence.
• Recheck at final torque in a linear sequence just to be sure you’ve not missed any!
• We loctite them in the case on install and use motor oil on the threads when torqueing.
• There is no need to re-torque later as yield is about 30% above actual torque, so there’s plenty of strength left in these beyond the recommended torque settings.

What are other advantages of this head stud kit?

• No machine work required
• No special gaskets required
• Simple, drop-in replacement for oem head studs with the highest torque available on a 10mm head stud.
• The studs are longer for a deeper bite in the case.  Don’t worry, the case has plenty of depth there.  We’re not going any deeper than the original machinework in the case.

Why use Inconel if Chromoly could already hold tremendous power?

• The alloys in these studs are so corrosion resistant, they’re polished vs. coated.
• The polishing also helps reduce any micro stress risers that could promote cracking down the road.
• The 10 point 14mm allow a much easier install with a small socket which will clear the valve springs.
• These nuts are also forged vs. machined.
• After stretch testing these studs, the nuts spun on and off easily.  Even up to 75 ftlbs!

Point is, they’re simply better…

So, check out 10mm Inconel 625 Head Studs for Porsche sub 1000+whp!

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