Stomski Racing


This high quality tool is by far the best way to remove the nut off the end of the camshafts on early 911 engines (through 1980 1/2).
A 12-point socket fits precisely over the cam nut (46mm) while the cam holder fits through the center of the socket- ensuring no slippage, no more trashed nuts, and an easier torque of the nut.
Black oxide steel/cast.
Replaces BOTH factory tools P202 and P203.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SR051
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)


More than occasionally the inner sprocket on the end of the 911 camshaft is jammed or fused in place and refuses to budge. The confined space of the chain box makes it impossible to leverage the gear off, and even if you can get an edge, chances are you will only cock the gear, jamming it further, or possibly breaking a tooth on the gear (or even mar the cam itself).
STOMSKI RACING's SR079 centers over the end of the camshaft and slips behind the sprocket flange, allowing you to smoothly and effortlessly slide the gear off– protecting both the camshaft and the gear itself (and the curse jar!). Black oxide hardened steel with stainless steel drive bolt.
Designed to pull the seized inner sprockets from the ends of the camshafts on and early air cooled 911 likes SC's etc, probably up to mid-993 as we think by then they stopped using the pin you slide in from outer sprocket into available slot in the inner sprocket which the tool is for, it's held in place with woodruff key to end of camshaft.
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)


STOMSKI RACING's version of the P9191 tool combines the basics of the factory tool and improves on it by adding an integral 19mm bushed socket that prevents slippage and rounding off of the cam bolt on the end of the 3.2 cam shafts.
The cam bolt on the 3.2 Carrera requires a torque of 88 foot pounds. Tightening the bolt to this spec, or loosening it using a breaker bar and the factory long-armed cam tool, requires dexterity, leverage, and serious luck that the deep socket does not slip off the head of the bolt, rounding it over, or busting knuckles in the process.
STOMSKI RACING's SR9191 securely holds an impact-quality socket in the center of a precision machined hardened steel socket, ensuring ease and accuracy in loosening the bolt, or setting the required torque. The bushing prevents the socket from being leveraged off the bolt head, keeping it squarely in place for the most accurate torque and security during installation and removal.
The SR9191 replaces both the factory P9191 tool and our SR078.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SR9191
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93