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I am new to the forum and thought I’d share a few photos of my newly built track car. I am transitioning from a 996 and looking forward to learning the 944 platform. The build was a blast and I’m very happy with the results. I typically run with Chin Motorsports and I’m also working on my competition license with HSR. Thank you all for the great technical info found on this forum.
Fuel cell inside the driver's compartment, no fire wall???
The fuel cell is secured in the frame shown in the picture and secured to the horizontal rear tube of the roll cage. There is very minimal space to install the cell below the rear floor, given the location of the transaxle. Therefore, I had Pyrotech build a cell to fit in the space shown with a rubber bladder and foam to minimize risk.
I'm guessing this is not the car you plan to race in HSR.
Yes, I plan to run this car with HSR, that was one of the main reasons for installing the cell. In reading the HSR guidelines they require a FIA certified fuel cell. If I need to modify the installation to
meet a firewall requirement I will do so...
944TrackCar... Please don't take offense to my comments. I rarely comment on car builds unless I truly feel there is a significant safety risk. I'm also a tried and true 944 guy. I've had many and currently have a SP2. Many, many skilled fabricators have attempted to put a cell into a 944. I've never done it, but from what I have seen it's very difficult to install one, properly. However, those guys also never, ever make the decision to put it where you did. Two primary reasons. 1. Fire wall becomes problematic. 2. Very big change to your COG. In my opinion, both of these reasons are significant, and I would urge you to reconsider. All the time and and energy we use trying to move weight around is completely undone by lifting your fuel tank by 25cm. I'm sure you will get some comments from guys with only the best of intentions. Good luck. HSR looks like a great series to race in.
993944S2.... No offense at all! I appreciate you taking the time to give your feedback. I am new to race car builds. I will talk to my fabricator about relocating the tank. I definitely want to keep safety my priority (another reason for building the 944 track car instead of tracking my street 996). The car has come a long way, and relocating the fuel cell can certainly be accomplished. I approach this sport with zero ego, I gladly accept and appreciate the feedback of folks with more experience. The track community is all about learning from each other and definitely staying safe. Cheers
My 1983 944 race car has a fuel cell mounted like yours the floor is cutout and it sits a bit lower. It has a sheet metal box covering it and has been raced since 1985 with 2 12 hr races and 1 25hr race. multiple log books and aero quip lines running down the inside floor passenger side.
My 1985 944 race car was just finished and like most other builds and the fact that the rules are lax the fuel system is stock with the exception of the hoses across the head. It has a NASA and PCA logbook.
I would build a sheet metal cover over the cell with a access plate over the fill .
My 1983 944 race car has a fuel cell mounted like yours the floor is cutout and it sits a bit lower. It has a sheet metal box covering it and has been raced since 1985 with 2 12 hr races and 1 25hr race. multiple log books and aero quip lines running down the inside floor passenger side.
My 1985 944 race car was just finished and like most other builds and the fact that the rules are lax the fuel system is stock with the exception of the hoses across the head. It has a NASA and PCA logbook.
I would build a sheet metal cover over the cell with a access plate over the fill .
Thank you for the feedback. I’m going to talk to HSR and my fabricator about this option. I’m okay with the higher COG. However, I want to make sure I meet the requirements of HSR and more importantly safety. Thanks again
Fuel Cells – An FIA/FT-3 approved fuel cell is required. The fuel cell must be replaced or re-certified in 10 year cycles. An inspection at 5 years of age is highly recommended. Fuel cells that cannot be age verified must be recertified before the next event. Certain modern street stock cars with centrally located safety tanks may be given a race-to-race waiver.
The fuel cell vent should have a one-way check valve, such as a PCV valve, to prevent fuel overflow.
Firewalls - There must be a metal firewall between the cockpit, engine, and fuel tank. No open holes are permitted.
Log books - All cars should have a logbook that is presented at tech. Those without logbooks will be issued one on request.Technical Inspection: All cars must pass technical inspection prior to participating in an HSR event. The car must be presented at Tech in a race-ready condition with all necessary forms and driver equipment. The Technical Director or Chief of Tech may reject any car he deems unsuitable for competition based on these rules, or for other unspecified reasons. It is the owner and driver’s responsibility to insure the car is in safe working order at all times and in compliance with these rules. The Chief of Tech will oversee an annual tech program, to include safety equipment. The Technical Director will decide on issues concerning general rules compliance. Having passed event tech or holding an annual tech does not exempt any car from further scrutiny at any time during an event.
These are the HSR rules. A sheet metal box around the cell becomes the firewall
06-30-2019, 09:12 PM
Newly Built 944 Track Car
