CaEric wrote:So when i do my head gasket i need head studs and main studs ?
Im just playing wit you nigga...
Yes, you should replace the cylinder head-to-block bolts because they are meant to be used only once. Cylinder head and similar bolts, commonly known as "torque-to-yeild" bolts are elastic, meaning they are meant to stretch a little before completely breaking and once tightened to manufacturers specifications, are no good other than the first time you use them. Also after tightened to spec, they can be rotated an aditional amount of degrees, normally about 90 degrees without an increase in clamping force. If you try to reuse these type of bolts again, your engine will most likely not last too long after its rebuild, etc. A bolt that has been stretched will not have straight threads. Main bearing cap bolts are usually never torque to yield.
Remember to always fasten bolts, nuts, etc. to the specified value!
Can anyone recommend me and my friend here on some "performance" head bolt manufacturers? I do not own a CA yet. I cant imagine being able to use the USDM ca18de bolts because of the turbocharger pressure difference. Correct me if im wrong.