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SVT Shelby GT500
Niche Team Screwup?
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<blockquote data-quote="Catmonkey" data-source="post: 13425311" data-attributes="member: 124025"><p>No, I don't. I ran the car at the Texas Mile in October of last year. When I got back from Texas, I drove my truck for a day or two and noticed coolant under the car. It was obvious that the coolant reservoir level was low and when I unscrewed the cap, it came back up quite a bit, as though it was under a lot of pressure. I noticed it didn't idle as smooth after driving for a week or so and removed the plugs. The electrode on no. 8 was melted. After I changed plugs, the idle was still off and the car started throwing a misfire code on no. 7 several days later. </p><p></p><p>At that point I performed a compression test and 7 and 8 were ~100 psi each. Bad tune, not enough octane or some other glitch coupled with running the engine at WOT for ~30 seconds on three mile runs obviously resulted in this mishap. If I had it to do over again, I'd have done a lot more data logging with the combination. </p><p></p><p>I wish I could tell you what the problem was, but I'd only be speculating. I see a few specs on the exhaust valve, probably from the electrode, but no other tell tale marks of detonation or overheating. I always said if I broke it, I'd build it back better, so that's what's going on now. There's no way to tell how much is too much, because each motor is going to have it's Achilles's heel. But if you turn up the wick, you have to expect something like this is possible.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 13425311, member: 124025"] No, I don't. I ran the car at the Texas Mile in October of last year. When I got back from Texas, I drove my truck for a day or two and noticed coolant under the car. It was obvious that the coolant reservoir level was low and when I unscrewed the cap, it came back up quite a bit, as though it was under a lot of pressure. I noticed it didn't idle as smooth after driving for a week or so and removed the plugs. The electrode on no. 8 was melted. After I changed plugs, the idle was still off and the car started throwing a misfire code on no. 7 several days later. At that point I performed a compression test and 7 and 8 were ~100 psi each. Bad tune, not enough octane or some other glitch coupled with running the engine at WOT for ~30 seconds on three mile runs obviously resulted in this mishap. If I had it to do over again, I'd have done a lot more data logging with the combination. I wish I could tell you what the problem was, but I'd only be speculating. I see a few specs on the exhaust valve, probably from the electrode, but no other tell tale marks of detonation or overheating. I always said if I broke it, I'd build it back better, so that's what's going on now. There's no way to tell how much is too much, because each motor is going to have it's Achilles's heel. But if you turn up the wick, you have to expect something like this is possible. [/QUOTE]
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