DanielZ
08-17-2011, 03:09 PM
Hey guys, new poster here but been on the site for a minute. I bought an 1992/3 s13 with stock ka24de in it. Basically blew a headgasket and now in the middle of timing/getting all the marks matched up, mind you i have the engine on a stand at the moment out of the car. I, unfortunately, have run into a pretty serious problem though was wondering if you guys can help me out. First of all when i put the cams on the head and set the timing to what im pretty sure was correct for both the lower and upper timing chains, i had everything in place and decided to test and see if i could get all of it turning at the crankshaft from tdc. Turns out itd only go half way each direction before i could push no more, basically i got the upper half circle rotation of the pulley. i then proceded to take off the cam gears and see if i got the same deal and to my surprise it moved freely with the crank sprocket and the one on the head timed to each other. I was told by a "mechanic" that i could have a bent valve i have no idea though, he also suggested the head mightve been shaved too much and now theres interference between the valves and pistons. Basically im at a standstill and looking for advice on either how to be able to diagnose whats actually wrong so i can pinpoint the problem, maybe timing was off? ive looked it up many times although shit can be pretty vague. maybe just get a new head? any suggestions or opinions will be greatly considered. thanks guys