So this Sunday is the first time I'll be taking my Porsche 944 out on the track and it's the first time I'll be driving on competition tires. Anyone have any tips on driving on comp tires? It's mostly a shakedown run for the car but if I can get some speed out of it that's all the more fun.
Edit: I should add that this is the spec racer I'm building, I'm not just some idjit who through R comps on a DD.
Oh hey! I never provided a fun update, so here ya go!
The tires were astounding, the level of grip that you get above and beyond even high performance summers is out of this world. They weren't too much to handle when they broke free of the limit, either, so I was concerned over nothing I guess. The 944 definitely likes to oversteer, too, so that's a lot of fun.
Downside, though, is that stuff broke. On my first run the alternator tensioner tie-rod somehow managed to escape the car. It was simply gone, no explanation, it must still be at Waterford somewhere. I ran out to Ace Hardware, thankfully open on Sunday over Labor Day weekend, and picked up a freakin' turnbuckle and slapped it in there with a whole mess of washers. Surprisingly it worked fine (once, that turnbuckle is messed up as hell now).
So anyway I get the car running and ready for session 2. I go out for 10 minutes and start getting black flags (they showed the flags but didn't point at me, I thought it was a course black) so I come into the pits. I'm met by the chief tech holding a very large fire extinguisher. Turns out the corner workers said I reeked of gasoline and yep, my gas cap was shot and was pretty much pouring it out along the side of the car. Okay no big deal I switched it out with my truck's and went back out.
Last session everything went perfectly. Motor was screaming, temps were good, no gasoline smell, brakes felt great and the tires were hauling my ass around like I wouldn't believe. So I run the full session, come into the pits and... why is it so quiet why is the engine hot oh shit oh shit the fans aren't coming on fuck fuck fuck. I pull into my paddock spot and kill the engine, at which point the coolant boils over and starts dumping onto the ground. I switch fuses for the fans but the fuses immediately blow--everything had gotten so hot in the car that I'm guessing the relay box was cooked and the resistance was way too high across the fan line. I disconnected one of the fans, put a new fuse on and turned it on. I waited a couple of minutes, burped the coolant, turned the car back on and watched the temps come back down from way too god damned hot.
Otherwise, though, it's running without abnormal sounds (aside from the heat cracking the fuel rail so it's spilling fuel onto the head).
Back in the garage at home, though, new sounds emerge--almost like, but hopefully not, rod knock.
So I pull the head to check it for straightness (and I can mill it down for more compression for the race series) and here is my head gasket. No surprise there's a bit of coolant in the oil.
So! Up now is a milled head, new gaskets all around and, if after reassembly and a few oil/coolant flushes it's still making noise, dropping the pan to replace the main and rod bearings.
A year and a half on and off I've spent prepping the car and I get one day before breaking it. Sigh.