Ok update. So new motor needs to be warmed up, break in time. Just drive around parking lot, warm up the motor nothing more than 4K rpm. It's Monday night, I need to get a data log sent to my tuner expert. 10 min in I hear an ugly rattle. DAM, into the shop and a few quick looks and the crank bolt is less than hand tight. Well u know the rest, tapped oh most of the valves on a brand new build. First race of the year 4 days a way. Grab the totally stock head and tues we pull the new built head and put on the stock unit. The Pistons have a lovely mark on them but I am going racing. Motor ran and we were able to get a data log off to the tuner. Test day we had the new STL car and the ITA car for testing. STL all we were trying to do was to base line everything from brakes to power levels, suspension feel and performance. So here is what happens. We ain't prepared to run to cars, it's to much and we didn't have enough help and our prep wasn't enough. Gotta call it what it is, not prepared. The STL car runs smooth, stops straight, pulls thru all the gears, slight grind into third, and will not accelerate past 5500 in 5th. Couple of attempts and a wall. Off track call the tuner expert with a data log. Takes some time to get it back and forth, don't drive this car until we change the tune, stupid lean that's a big wall. So move to the ITA car, first session nothing more than 6 k and all seems ok, gear box shifts great, brakes nice, balance of the car is spot on. All fluids look good, second session 3 laps, oh shoot, dreaded rattle, off, coast into pits, pull plugs, and wow, the number 4 plug is slammed shut. What happened to this. The intake valve broke off a head and it wedged in the piston. Done. Ok play with the STL car. Competion is small car runs well and the tune sent saved the motor. We did well but the competion in this class was small as compared to the ITA class. So one car on the trailer and the other we had some good learning. Thanks to pat who does all the heavy work and Tom who controls all the computer conversation for the tune. That was all last weekend, this week we pulled the second head off, and now I have two heads being repaired and one completely ruined new piston needing replacement. Next race might be missed. Losing my sense of humor but all the help,and friends make it a weekend still worth the effort.