VACUUM HOSE KIT 924 / 944 ALL / 968
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Lindsey Racing Silicone Vacuum Hose Kit.
This king includes 25' of .100" wall thickness silicone vacuum hose and 4 metal "T"s.
Although originally offered for the 944 Turbo, this hose kit can be used on any car where you are wanting to replace the hard plastic vacuum hose and rubber T's or cars that use a 3/16" sized vacuum hose.
Tips, Manuals and Instruction
VACUUM DIAGRAMS 944 TURBOOne of the most common problems we find with the 944 Turbo is vacuum line related, whether it's old and leaking hoses, or mistakes in the plumbing of your updated vacuum lines. We have Vacuum Hose Kits to replace those old lines and recommend doing so. Below are several diagrams that should aid you in the correct method for your particular set-up. Mistakes can cause a lean condition, lack of boost, lazy boost onset and throttle hesitation and in some cases engine damage.
Most of these cars are 2 decades old. Chances are there has been many sets of hands on the engine, repairing or replacing parts over the years. Even if you already have, or are about to replace your vacuum lines, don't assume that they were plumbed correctly. Most of the customer cars we have a chance to view have things incorrect. The difference when corrected in how the car runs can be night and day. NOTE: It can also require engine re-tuning with the hoses now in the correct configuration since the car was tuned with the wrong configuration, in particular, if you have adjustable fuel regulators, MAF systems with controllers or EMS controlled cars.
On some of the diagrams below, we show some lines to a Dual Port wastegate and Manual Boost Control. The wastegate pictured is the Lindsey Racing wastegate. If you're using a TIAL, and perhaps other brands, the two hoses at the wastegate need to be swapped or opposite what we picture.
On all of the diagrams pictured, we have used the later model Idle Stabilizer hoses, sometimes referred to as the venturi delete hoses. This eliminated the problematic "venturi tube" system on the '86 and sometimes early '87 model cars. If your car is an '87 onward model and has had replacement engine, it may be an early engine and has the venturi tube. Our strong recommendation is that you remove and update it with our Venturi Delete hoses. How do you determine that? If the hoses are not the ones linked, and the diagram does not agree, then you have a venturi tube.
86-88 944T w/Stock Intake (1 vac port), Stock WG, Venturi DeleteVacuum Lines / Venturi Delete Hoses / Wastegate Control Lines / Bypass Valve Hoses
86-88 944T w/Stock Intake (1 vac port), Dual Port WG w/MBC, Venturi DeleteVacuum Lines / Venturi Delete Hoses / Wastegate Control Lines / Bypass Valve Hoses
88-89 944TS w/Stock Intake (2 vac ports), Stock WG, Venturi DeleteOn this set-up, we have added a longer 2 port vacuum banjo bolt, fitting and sealing rings allowing us to reduce the number of Ts and put more devices on their own vacuum line. If you don't add that 2 port bolt, then you would T - in the bypass valve to the fuel regulator and fuel damper lines like the 86-88 drawings.
Vacuum Lines / Venturi Delete Hoses / Wastegate Control Lines / Bypass Valve Hoses Vacuum Lines / Venturi Delete Hoses / Wastegate Control Lines / Bypass Valve Hoses
Vacuum Lines / Venturi Delete Hoses / Wastegate Control Lines / Bypass Valve Hoses
Q: Do these fit N/A 924?
A: It would work on any automobile to replace vacuum line whether a hard plastic line like your car has or a rubber line.
Q: Does this kit come complete with enough fittings for a 944 NA? What about "J" fittings? What do I dothere?
A: It's 25' of hose. That should be enough to cover anything under your hood. A "J" fitting means it's turning a corner. Just turn the corning using the vacuum hose and skip using a J since it's not necessary.