When they 'rebuilt' the motor, they didn't clean everything, and probably used the same oil pump (and presumably didn't rebuild that, or even flush it), thus, mixing all the old coolant/oil residue left from the BHG, into your fresh oil reserve in your not so rebuilt motor. End result is almost always Rod Knock.
Probably lack of torque on the headbolts. For future reference, retorquing the stock headbolts or replacing them is the bare minimum to prevent a failure like this.
I'm not trying to be a jerk in any way, just trying to let you know what probably went down to floor you out of so much $$$$.
To do a TT build, first you need a solid and reliable engine, do that first... then worry about the turbo. You can always just build the engine right, throw on a CT26 and have fun for a year or two while you collect parts and money to do a TT setup.
like i said ive been through a lot with that car. But it was partially my fault for not installing a relay for the electric fans...thus they melted the toggle switch and she overheated a few times so i knew it was coming but as for the motor im going to be ripping it out this winter and ordering some goodies. I was thinking .040 forged wiseco, eagle forged rods, HKS hg, ARP hardware, and all new seals, bearings, and new hardware everywhere. But i was going to ask has anyone used the brain crower cams on there 7m? if so how are they?
