So I was wondering, what is the weak point of our engines? By that I mean, with lots of boost and added power, what are the components of the engine that tend to go first? Let's assume improper tuning doesn't play a factor in these failures...

So yeah, what is it? Headgasket, head studs, rods, pistons, valves, or what?

 

Overall the motors between the 2 are basically similar.

I believe AP1's are known to have weaker keepers/retainers in the head.

Stock h/g can take some serious abuse, no cause for alarm there, as well as stock headstuds, many have seen over 700whp+

Rods/pistons are also stout, but the pistons will tend to give way before the rods fail. The rings and/or lands will start to melt as the temps/boost increases.

That is of course in a nutshell.

Seems from my limited experience on here, "most" builds are safe in the <600whp range. Beyond that, it's a crapshoot where the problems start to arise.

 

I'd have to agree with Siadam. From what I've read, most problems seem to be piston lands or rings and AP1 valve retainers.

 

good question i was wondering the same thing. only thing i was going to do was build up my head if anything and put a thicker hg and arp head studs in.

 

YO THAT SUB BOX IN YOUR CAR IS SICK!!!! GOOD IDEA lol i saw it and i got so excited.... you should have made a DIY for that... i think im going to try and make one on my car... i hate not having trunk space even tho my sub fits right in the center