By maddog2020 - Tue Nov 11, 2025 5:05 pm
- Tue Nov 11, 2025 5:05 pm
#324168
These are exact reproductions of Mike Simard's head and block stud kits. I started off by taking my set of Simard studs and had them destructively tested at a local metallurgy lab. They did a composition test so I know exactly what material was used. I also had transverse hardness testing done where they cut studs in half and did hardness testing 1mm apart thru the entire studs to determine if they were through hardened or just surface hardened, as well as documenting the hardness level.
Threads are rolled just like the original. Mike was super picky about the washers for the 12mm studs and only used the factory Porsche washers which run over $4 each. I made custom washers to the same spec because I needed more washers for these kits than Porsche had in stock world wide. The 10mm washers were custom made as well since the factory 10mm washers have since gone NLA. The same process was followed to have the washers made by having the local lab complete hardness tests as well as material testing and certification.
It goes without saying that certified lab testing is not cheap. I spent several thousand $$$ just to have the testing done.
They are identical to the original Simard studs. I had to spread the lab costs, the development costs as well as the manufacturing costs across these sets which resulted in prices higher than I wanted but it is what it is. When the original versions were available in 2010 they ran 650 per set.
Lower block stud kits are $599
Head stud kits are $699
10 sets are made only 7 sets left.
If anyone purchases a set of head studs and block studs at the same time I'll discount $100 off the order.
And yes I'm running these in my own engine.
Threads are rolled just like the original. Mike was super picky about the washers for the 12mm studs and only used the factory Porsche washers which run over $4 each. I made custom washers to the same spec because I needed more washers for these kits than Porsche had in stock world wide. The 10mm washers were custom made as well since the factory 10mm washers have since gone NLA. The same process was followed to have the washers made by having the local lab complete hardness tests as well as material testing and certification.
It goes without saying that certified lab testing is not cheap. I spent several thousand $$$ just to have the testing done.
They are identical to the original Simard studs. I had to spread the lab costs, the development costs as well as the manufacturing costs across these sets which resulted in prices higher than I wanted but it is what it is. When the original versions were available in 2010 they ran 650 per set.
Lower block stud kits are $599
Head stud kits are $699
10 sets are made only 7 sets left.
If anyone purchases a set of head studs and block studs at the same time I'll discount $100 off the order.
And yes I'm running these in my own engine.
Last edited by maddog2020 on Mon Jan 19, 2026 8:38 pm, edited 1 time in total.
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