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This weekend at the 48 hours we started leaking a little coolant on the driver side. At first we thought it was overflow and probably a bad radiator cap (radiator caps are an issue on these cars so ALWAYS have a spare). After changing cap leak was still there. We could not see exactly where it was coming from. Was very small and did not leak whole time. We figured it must be the coolant tank. Porsche Motorsports was there (these guys are great) and had a tank in stock. So Saturday AM before the Sprint Races we started changing. Pretty easy on a 991 actually. Our surprise was that is was not the tank that was leaking. In the back inward corner of the tank it contacts the engine coolant hard pipe. Turns out the tank had worn a hole in the aluminum pipe. Again Motorsports had the part on the trailer ($1331 are you freaking kidding!!!!!!!!!!) but the repair really means motor out. So we patched it with a little JB Weld and some reinforced hose over patch and it worked like a champ. Got in both Sprint races without an issue. But this is something to look for on your cars before it happens....
BTW this was a 2014 with '16 upgrades and only 57 total hours...
That is sort of the same thing. The 991 Cup is a different part number than the GT3 street car and over 10x expensive. Where the Cup blew out is under the the reservoir. Car is back now. i will try to get pic showing where it rubbed.
That is sort of the same thing. The 991 Cup is a different part number than the GT3 street car and over 10x expensive. Where the Cup blew out is under the the reservoir. Car is back showing pic of where it rubbed.
price differential makes no sense, even for Cup land.
02-04-2018, 02:13 PM
New 991 Cup Coolant issue to watch for
