Porsche® 911/930/964/993 Dilavar Head Stud Kit, 1974-1998
- Set of 24
As Porsche increased the displacement of the 911 engine, the different rates of thermal expansion between the head studs and the alloy engine case halves caused head studs to break or pull out of the case. The first sign may be a sound like an exhaust leak, but it could be a cylinder head leaking where the studs have pulled loose. Porsche first attempted to solve the problem with Dilavar studs. Recently, Porsche replaced Dilavar studs with steel studs.
The new studs are used on all 911 engines since 1990 and feature a micro-encapsulated surface designed to prevent corrosion (which now appears to have been a major cause of snapping head studs). These new studs also come with the case end threads coated with a locking compound.
We offer the new micro-encapsulated studs with locking compound. (Make sure the threads in the case are free of dirt and oil; and be careful in installation not to scratch the stud coating). They can be installed individually, but most professional shops install a complete 24-stud set, as they believe this is cheap insurance against tearing the engine down a second time.
Fit all 911, 930, 964, 993.
Individually Sold #P910079
|Make / Model||Series||Body||Notes||Year|
|PORSCHE 911||1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989|
|PORSCHE 911||C2 & C4||1989|
|PORSCHE 911 (930)||1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989|
|PORSCHE 911 (964)||C2 & C4||1990, 1991, 1992, 1993, 1994|
|PORSCHE 911 (993)||C2 & C4||1995, 1996, 1997, 1998|