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Registered
Join Date: Jul 2005
Location: Cleveland, OH
Posts: 1,367
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Head Studs...
Building up race motor... 4L+ 12.5+ CR. Currently have 993 NA head studs, should I be looking at different head studs? Figured I'd check before I just spend the money.
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07-12-2023, 08:15 AM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,885
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Well, I can tell you that Evelrude, Knight, Gamroth, and Dawe use 993 TT head studs in their 3.6L+ race builds.
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Scott Winders PCA GT3 #3 2021 & 2022 PCA GT3 National Champion 2021 & 2022 PCA West Coast Series GT3 Champion |
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07-12-2023, 10:05 AM
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Registered
Join Date: May 2013
Location: pittsburgh pa
Posts: 802
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i'll start the war..... go with supertec studs from henry!
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07-12-2023, 02:55 PM
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Registered
Join Date: May 2004
Posts: 874
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With any part you include in your build, there has to be good reason to do so. Engineering, better and ease of fitment and cost.
There are many versions and all that I know of are good. You will not go wrong with any. The older Porsche studs were known to fail but the later ones (993) are good. I would never say they are the best as (in my opinion) you have to tick several boxes when making a choice. We made these years ago and when we stopped building the air engines we stopped producing them. Others jumped in and pick up the mantle. We now build these expensive air engines again, and looked at every part included. We decided to make our own studs again and added features that we considered important to us. The use of Titanium washers and nuts is very important in our opinion as this material acts as an heat insulator and stops the nuts from expanding under constant heat cycles and loosing their tension. Adding a hex on the top side makes installation and height adjustments easy as well. Everyone has their choice. The more choices the better for all. |
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07-12-2023, 04:11 PM
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Constitutional Liberal
Join Date: Apr 2004
Location: Seasonal locations
Posts: 14,528
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Quote:
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Jim “Rhetoric is no substitute for reality.” ― Thomas Sowell Last edited by Turbo_pro; 07-13-2023 at 09:20 AM.. |
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07-13-2023, 07:27 AM
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PCA Member since 1988
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Jim, there's another name for guys like you: "Conservatarian." I use that too.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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07-13-2023, 04:43 PM
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Registered
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I think everything that needs to be said about head studs has been said... Search.
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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07-14-2023, 06:10 AM
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Try not, Do or Do not
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Quote:
In the air-cooled Porsche head stud world, is there a "better" mouse trap? Innovative thinking suggests there is room for improvement. Why else would Neal design and produce a new stud. We came to that conclusion 25+ years ago and never looked back.
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net Last edited by Henry Schmidt; 07-14-2023 at 08:37 AM.. |
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07-14-2023, 08:35 AM
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1977 Porsche 911 Targa 2.7s
Porsche
Retor 911
Scarab
Riley
