The Bosch K Jetronic, or continuous injection system (CIS), is a mechanically-based fuel injection system that was used on the 911, 911 Turbo, 924, 924 Turbo, and 928 models during the 1970's and into the early 1990's. As these systems age, there are several components you can change to tune up the system, which is what we'll cover, using a 911SC as the example. The components we'll look at are the in-tank fuel filter, the regular fuel filter, and the fuel injectors. Note that CIS fuel injectors have a non-replaceable filter inside the fuel injector.
Before looking at any add-on improvements to your suspension or tires, you should perform a detailed maintenance check on what you have today.
We all know how important maintaining proper tire pressure is. Tire pressures affect safety, grip, and tire wear. Tire pressures are affected by temperature, both the ambient temperature, and the actual tire temperature. Normal highway driving causes tires to heat up, and causes pressures to increase. Track days and autocross events produce a lot more heat so what can we do the minimize the increase in pressure
When you're starting out in drivers education, your stock seats and 3-way seat belts are fine. As skills grow, many will find themselves fighting to stay in their stock seats. So you might consider switching to another seat, and there's a gaggle of them available: With reclining or fixed backs, and steel, fiberglass, carbon fiber/kevlar, or aluminum construction.
Driven primarily by tightening US emission standards, Porsche first used Bosch mechanical fuel injection to replace carburetors on the 1969 911 E and S. From the early 1970's through the early 1990's, Bosch K Jetronic, or continuous injection system (CIS), was used on the 911 (1973 - 1983), 911 Turbo (1976 - 1992), 924 (1976 - 1982), 924 Turbo (1981 - 1982), and 928 (1978 - 1979). Let's see what makes CIS tick.
For CVR driver's education, rollbars are required in cabiolets and Boxsters, and roll cages are required in all open cars and targa's/914's without roofs. Aside from a custom designed/welded rollbar or rollcage solution, there are several sources for rollbars which fit all of our Porsche models.
When it comes to brake bleeding, there are 4 ways to bleed your brakes.
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