need help asap

[scottsnissan]

Ok i will satrt with car1995 240 sx se 5 speed Jus got in a new headWell the prob we have may be time-n or not.We put the head on and left the number one piston top dead.Based on what we got out the manual we aligned the cams and sprocket accourding.Well when we spin the main pully after half rotation we get locked up.We look at the cams and notice that the exaust intake valves are open at the same time.We was thinking cams are located in wronge place but i look at another with the vav,e cover off and noticed that green was intake and orange was exaust.On the timing we aligned the middle sprocket mark at the correct postion (book says about 2 oclock or so.then aligned the cams at 11 and 1 oclock.Well trying to align the intake after the exaust is when we noticed that the cam was locking on something like the valves were hitting pistion.Well we spun the block and had the 2 and 3 pistion on top and again valves hit so now were stomped .My main question is what would be the best guess on the prob?2 end would be do i have the colors correct on the cams?And last does any one have a better photo of where the marks are suposed to be and at what piont are they there?

If any one has a online manual with better photos or so i can get would be nice.or soem one with there valve cover off would be some help too.

Thx email any thing to [email protected] Scott

[180fan]

timing chain is off. When putting back on the head, assuming the #1 piston was TDC, you should have matched the colored chain links to the punchmarks on the sprockets. There are two chains on the dohc, the cam sprockets would have their punchmarks line up to the colored chain links, while the last (3 on the upper timing chain) would line up again with the punchmark on the sprocket that's connecting the two chains together.

[scottsnissan]

ok we did all that.The marks on the chain lined up with cam gear sprocket,we followed the chilton man.What about the colored cam gears does it matter and whats the correct code for that.I understand that when ur lined with the secound mark on the main pully ur top dead .Well we did all this at one piont with the motor top dead without the head and never moved it till haed was on and we were working on the cams.