Just needs some advice what would be more reliable a k24 bottom end or a stroker kit? I want more torque out of my 07 civic si but I want to be able to rev high what do you guys recommend?

 

They both have the potential to be reliable enough to DD, but they need to be done correctly. Also, keep in mind, as the stroke increases, the redline decreases (in most cases) and the time it takes to go from idle to redline will also increase (ie, the vehicle will rev slower). Keep in mind that even the K24A2 only revs to 7100rpm, so I wouldn't recommend going past that without head work and a crank balanced for high-speed operation.

But really, whichever way you go will be reliable (assuming the stroker kit you're looking at is from a reputable company) provided you don't get too crazy with the engine speed. Naturally, the K24 bottom end will be as reliable as your factory bottom end, since it came from the same company. But if you're looking at forced induction, most stroker kits come with forged internals. Just something to keep in mind.