ok i am about to start building my turbo bottom end. i am looking for about 300whp on a t3 t4 turbo my question is, is a block guard necessary for this set up and when does a block guard become necessary? thanks guys

 

Is your engine open deck?

My F22 is open deck, one workshop offered that I should put in a block guard, I said no as for them it will do more damage than good if there is a slight miss in installation.

People said block guard is a killer for cracked sleeves etc etc since it has different expansion rate that the engine block itself under heat.

 

if you cant afford a sleeved block you might as well have a little more protection. just make sure its a repitable shop that installs it.

 

the motor is a d16z6 by the way. i dont want to do it unless i have to becuase i know if its screwed up at all it will mess up everything.

 

I dont believe block guards prevent cracked sleeves. They...if anything, might help under high rpm or high boost keep the cylinders from moving around. Its been my experience that if a sleeve is gonna crack, its gonna do it wether or not the guard is in there. I steer all my customers away from them.

 

I bought a motor that ended up having a block guard in them, I have read, although I can't confirm this, that if you try and remove a block guard it has a chance to make your cylinder walls not round anymore.

I was going to try and remove mine as it is just pressed in there, however I didn't want to take the chance in ruining my cylinder walls.

 

A block guard is just that a "BLOCK GUARD". It doesn't prevent sleeve cracking, what it does do is help prevent your block from becoming non - resleevable. So if your going to do high boost, I recommend sleeving your block to begin with.

 

what are we considering high boost here?

 

I agree! If you going for high boost, Just get the block sleeved.