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Friday I was pushing my car pretty hard and something internal let go. I made 15 runs in 3 hours on a warm day(85deg, 3200 da), I was working on my 60’ but also turning up the boost in the higher mph’s. Ended up running 6.00 letting off early with a less than stellar 1.46 60’. May have been a new best if it hadn’t broken.
Logs looked mostly good. A/f, fuel pressure, timing, boost all where I wanted them. After looking closer I see my coolant temp was pretty warm pre run. 220deg. Might have helped to give it a little more time between runs.
From what I can see without taking the motor apart I think I may have dropped a valve or had one seize and get hit. The piston is still attached to the rod and does not look to be broken. I will have it apart in a few days and know more.
Thinking I need a used motor and then swap as much as I can over. Buy one new piston, new rings, put some better valves and maybe guides in the heads. Might do main studs this time.
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