by BobS » Sat Dec 08, 2012 4:58 am
Where was your temporary cooling system? You should NEVER run a 4BT for more than 30 seconds without a cooling system of some kind in place. Then it should be allowed to cool down and equalize temperatures between the block and head. My guesses would be you possibly blew the head gasket, possibly warped or cracked the head, or scored/melted a piston and cylinder, probably #4. You were correct that it ran fine and was a good engine in the beginning of your video.
BobS
Creating jobs is a byproduct of making a PROFIT!
91.5 W250 NV4500 Conversion
89 D350 Stock
92 W250 Crew Cab finally in progress
86 D150 wannabe 4BT http://4btswaps.com/