I got a d15a3 in my 87 crx and I was hopeing for some help..I just had to change the camshaft because of the wooddrift key broke off...We just put it back together now and it wont start someone please help me...

 

my guess is that the timing is off.

 

check your timing mark for the crank and make sure that the cam marks are lined up with the head and it sould have the word up on it and the should be up.