Twin Turbo Accert Cat Replacement

Cat has really let there qc go to heck.Head bolts to spec at 350lbs,it makes the head gasket wear early on the rear cold side corner.When we changed the cam we went ahead and cut the block put a new headgasket in torqued it to 400lbs this will thwart a bad headgasket.Another reason engines dont last is egr,cat has there own version of egr in a water cooler,bottom right side,just left of waterpump.There was a ton of carbon build up in stock manifold,kinda like a yellow version of a detroit minus the vpods and veined turbo.Materials in the engine are cheaper as well,the steel isnt nowhere near as strong so it wears easier.When you rebuild one swap heads with an older engine if possible it will last a lot longer,on another note if you torque those head bolts to 400lbs you will see them swell and not take the abuse.I had four that couldnt cut the mustard innitially.When you get a good engine keep it forever,when you know what your dealing with life is easier.cheers

 

This company had 10 or more of these. Some would get around 7 mpg easy, others would struggle to get 6. All were with a few serial numbers of each other.

 

Adding my 2cent's,my bxs (475hp) accert has 730K on odometer and a little over 750K on ECM (spedo head off a little) and aside from adding about 2 gallon's of oil between changes (at about 15K) it runs good,no complaint's average about 6.5 mpg and have only replaced water pump and air compressor....It's no 6NZ but I'm happy with it.truck is paid for so I'm ready for OH when the time comes..also I heard Bruce from Pittsburg Power on a talk show and he mentioned that it is a little cheaper to convert a bxs accert to a single turbo.