like the title says, my exhaust cam wont turn at all, it does, then stops like if something is blocking it from turning, motor is not in the car yet, VERY WORRIED, been spending money on this motor to get it together and now i'm afraid its been a waste

 

look to see is any of the valves are bent. take the cam out and see if it is locked up in the bores or not.

 

If you are turning the cam without the timing belt in place, you could (and most likely are) experiencing some valve/piston contact. I would advise against turning the cams unless the timing belt is installed and properly timed.

 

the valve could be sitting on the piston with you trying to turn it. put it to TDC to see if it turns. It's not gonna turn freely with the engine assembled.

Does it move at all?

 

yea it moves, then it would stop like if something was blocking it, i took the cam caps off, and inspected everything, looks like the last owner put new valves in, i took the cam out and everything, looked all round in there, everything thing seems fine, nothing bent, now i put the cam back in, and put the camp caps back on, NOT tight, cause i dont have a TQ wrench, but just snugg so the cam wont pop off, and now the cam turns both ways, counter and clock wise,

 

the motor was at TDC, and still wouldn't move, but now it moves all of a sudden

 

check the condition of the cam journals and bores to see this could be a possible culprit

also like the guys about me said i think that alot if not all honda motors are interference engines which means if the cam is not in perfect timing with the crank the valves can and will hit the tops of the pistons


put cams in timing with crank and install the timing belt and slowly try to turn the eninge over and if it still happens then i would deffinitly check for bent valves among other things

 

torque proper on those cam caps, try it!

 

before with the timing belt it would be hard to turn the crank, the crank bolt would just come loose again

 

i would try it with the timing belt back on, but the crank bolt wont come off now

 

who hates crank bolts ::raises both hands::

have you checked the torque of the cam caps yet, you might have just compressed them too much and squeezed the cams in.

 

but it would turn, but then it would stop turning

 

tried it with the timing belt back on, and still does the same thing again, could it be just everything is just off sync? and the valves are hitting the pistons due to being of timing? when i would turn it, it turns a couple of times, and then i it sounds like it hits something, then stops turning

 

did you just slap on the timing belt or did you actually alling the timing marks on the cam gears and crank pulley?

 

the gears are pointing up (arrows), but the crank i believe is way off

 

worried

 

With the crank set to TDC two of the pistons are up and two are down. Turn the crank to 180 from TDC (both sets of pistons are at the half way point) . If the cam does not turn free then its binding and needs to be checked for proper fit.

 

ya what he said but its 90 degrees