ground terminal on hifonics amp

i have a brutus bxi2006d amp and my ground terminal keeps gettin hot. i have grounded it directly to chassis with 0 gauge wire that is 3 feet in length. but now the the terminal has come loose and i dismantled the amp and was wondering which grade solder i should use as well as why is it gettin so hot. as a method as to how to go about it. i do has some eletrical wiring and soldering exp

Plus ur ground should be no more than 16 inchesMastermindz

ok i think its cause im running it on 1 ohm load.... so the impedance.....ok so how could i go about reconnecting the terminal. is there any type of solder i can use

Aren't the Brutus amps 1 ohm stable?Mastermindz

A lot of times when the blocks melt out of the board they oxidize and they will no longer allow solder to adhere to them.  You will need to remove all of the old solder from the board. Do this using a solder sucker, preferrably an Edsyn Soldapult branded device.  Or a boat load of desoldering braid.  If there is any solder left on the block, that too should be removed.  This will require a torch and some constant movement with the torch.  You can melt the bolck.  Do not put the block in a vise, this will dissapate too much heat and you will never get it hot enough.  Find a long piece of all thread or a rod that will fit in the hole, tighten the screw up onto the rod and use the other end of the rod to control and rotate the bolck.  This will take some time to heat the block up enough to get the solder off and then you will need to reinsert the timy pins through the holes in the board.  When you insert it back into the holes, you may need some help to hold the block in place while you heat up the bottom of the board and apply solder to the bottom of the board.  After you get the solder on the bottom of the board, you may need to turn the amp back over and reheat the block so the solder will adhere properly to the block.

I got it to work....I cleaned the terminal and the board....but its still.separating....I need a new soldering gun as its not getting hot enough to spread solder on terminal

Yeah, it is sometimes hard to get enough heat on the block to make a good connection.  I should have mentioned that earlier.