Quote Originally Posted by TR_Accord
be careful hitting vtec all the time, those rod bearings don't hold up too well in high rpms, had it happen to me w/o vtec. people said it would handle 7k all day and I never brought it past 6500rpms but developed a rod knock anyway with black and blue bearings
We found out that the problem was that someone had switched the #1 and #4 bearings in the block. The #4 bearing was too lose which caused it to spin, and the #1 bearing was too tight in which the crank and rod ate it up. So we'll have to go with a new crank and rods.