|  | | | Porsche 911 & Carrera Pistons, Cylinders, and Heads - Page 5 | Cylinder Head Studs and Hardware | | As the displacement of the 911 engine increased over the years, the increased stress caused by differing thermal rates of expansion often caused the head studs to break or separate from their mount in the case. This often resulted in a leak between the piston and the head. Porsche decided to solve the problem by using Dilavar studs. However, there were reports of these studs breaking under pressure prematurely. There are a few good solutions. You can replace your studs with the standard Dilavar studs that the factory began using in 1984. Or you can use high-strength aftermarket studs (available below). Made from high tensile strength steel, and combined with time-serts placed within the case, you should no longer have any problem with head studs pulling out. Another alternative is the factory replacement for the Dilavar studs, which are micro-encapsulated steel studs. These are coated to prevent the surface corrosion that is believed to contribute to the premature failure of the Dilavar studs. |
| | Cylinder Head Studs & Hardware | 
901-104-382-02-M260 | Cylinder Head Nut (24 required, sold per each), 911/911 Turbo (1974-89)
Brand: OEM [More Info] |  |
| $4.50 |  | 
999-031-091-01-M260 | Cylinder Head Washer (24 required, sold per each), 911/911 Turbo (1978-89)
Brand: OEM [More Info] | |
| $1.25 | | 
911-101-172-00-M260 | Cylinder Head Stud, Mounted into case, (24 required, sold per each), Steel, 911/911 Turbo (1965-98)
Brand: OEM [More Info] | |
| $10.25 | | 
10-0115-101-M105 | Cylinder Head Stud, Mounted into case, (24 required, sold per each), Steel, Coated Black, 911/911 Turbo (1965-98)
Brand: Canyon [More Info] | |
| $13.75 | | | 993-101-170-53-M260 | Cylinder Head Stud, Mounted into case, (24 required, sold per each), 993 - fully threaded, DILAVAR, 911/911 Turbo (1965-98)
Brand: OEM [More Info] | |
| $39.25 | | | Case Savers | 
RP-102 | Case Saver for 10mm Stud - 14mm x 2.0 Outside, each [More Info] | $0.85 | | | Timeserts | | PEL-PP-910071 | Timesert Insert Set, 24 Per Set [More Info] | $34.99 | | 
PEL-911TS-01 | Timesert Installation Kit, Each [More Info] | $158.95 | | | PEL-PP-910082 | Timesert Inserts (12 Pack) [More Info] | $13.95 | | | PEL-PP-910071 | Timesert Inserts (24 Pack) [More Info] | $34.99 | | | Supertec Performance Cylinder Head Stud Kit | These cylinder head studs are an innovative design that is unique compared to anything else on the market today. The kit includes 24 studs, washers and head nuts. The polished studs have rolled threads; the case end is slightly longer, permitting it to thread deeper into the case, and the head end is fine threaded for smoother and more consistent torque. The nuts are 12-point with a serrated flange and the washers are hardened ground.
Supertec chose an alloy that is race-proven and impervious to corrosion. They spent two years to design and develop this product until the desired specs were achieved. These studs are currently being used in everything from 700hp+ race engines to two-liter production street engines. Until now, these studs have been one of the best kept secrets in the high performance Porsche world. Now they are available to you through Pelican, and at a reasonable price too! Best of all, they are GUARANTEED for LIFE! (Any reported failures will be subject to analysis by Supertec Performance.)
Fits all 911 based air-cooled engines from 1964 to 1998. This includes 3.8 RSR, 3.6 Carrera, 930 Turbos, 911 T, E, S, SC, 3.2 Carrera, and even 914-6. |
| 
SPTC-HSK-1 | Supertec Performance Cylinder Head Stud Kit (sold as a complete set, hardware included), 911/911 Turbo/964/993 - 2.4/2.7/3.0/3.2/3.3/3.6L engines [More Info] | $650.00 | | | RACEWARE Cylinder Head Studs, Nuts and Washers | RACEWARE Aerospace QUALITY Head Studs Eliminate Head Gasket Leaks and Increase Power! RACEWARE Head Stud Kits (HSK) are the only Aerospace Quality Engine Fasteners to come with a written Lifetime Money-Back Satisfaction Guarantee!
RACEWARE 12-Point Aircraft Nuts come with an Anti-Friction Coating to assure accurate tightening eliminating annoying leaks. Engines run up to 15 degrees cooler and allows for easy Access to second sparkplug on dual sparkplug applications. Installs without the hassles of hex or splined drivers.
RACEWARE BILLET Hardened Cylinder Head Washers are precision CNC Machined for correct size and fit to prevent crushing of aluminum in head that allows loss of clamp force. RACEWARE BILLET Hardened Cylinder Head Washers also offer an O.D. chamfer that eliminate stress risers and potential cracks in heads, as opposed to typical cheap stamped steel washers with sharp edges.
NOTE:RACEWARE Head Stud Kits DO NOT come with Hardened Washers or 12-Point Aircraft Nuts. Nuts and Washers are listed below. |
| | PEL-RTE-1022 | RACEWARE Cylinder Head Stud Kit (sold as a complete set, Studs ONLY), 911/911 Turbo/964/993 2.4/2.7/3.0/3.2/3.3/3.6L engines [More Info] | $539.95 | | 
PEL-RTE-5001 | RACEWARE Cylinder Head 12-Point Nut Kit (sold as a complete set, Nuts Only), 911/911 Turbo/964/993 2.4/2.7/3.0/3.2/3.3/3.6L engines [More Info] | $169.60 | | 
PEL-RTE-6001 | RACEWARE Cylinder Head BILLET Hardened Head Washers (sold as a complete set, Washers Only), 911/911 Turbo 2.4/2.7/3.0L engines (to 1977) [More Info] | $119.50 | | | PEL-RTE-6002 | RACEWARE Cylinder Head BILLET Hardened Head Washers (sold as a complete set, Washers Only), 911/911 Turbo 2.4/2.7/3.0/3.2/3.3/3.6L engines (from 1978) [More Info] | $119.50 | | | Casper Labs Cylinder Head Studs, Nuts and Washers | | Casper Labs offers a complete cylinder head stud fix in one reasonably priced and complete kit. They have 30 years of experience designing and manufacturing specialty parts for air cooled piston and jet engines. Their metalurgical experience with Pratt & Whitney lead to the application and test of a specialty precipitation hardening alloy steel (Carpenter Custom 630) for the Porsche stud application. With precision rolled threads on 200+ KSI yield strength material, they are inherently notch/corrosion resistant (no coatings needed that can chip or flake). Casper Labs includes a lifetime guarantee against breakage. The 74 piece kit also includes specially plated heavy duty all metal locknuts, hardened washers, an installation tool, threadlocker, and a detailed instruction manual (which includes case preparation). At roughly half the cost of buying individual parts, you get a hardware set specifically engineered to work together. NOTE: These studs require the use of case inserts (KEENSERTS, Heli-coils, Case-Savers, or Time-Serts), as they are slightly longer than OEM studs to take full advantage of the extra threads in the insert. |
| 
PEL-CSP-HEAD | Casper Labs Cylinder Head Stud Kit, 911/911 Turbo/964/993 2.4/2.7/3.0/3.2/3.3/3.6L engines [More Info] | $565.00 | |
| |
|
|
|
