Intake cam and Exhuast cam: differences (92' 6bolt 1g)

[talontsi01]

Besides the slit in the intake camshaft for the CAS, what are the differences in the two cams?

My dilemma is that my shop resinstalled my cams backwards. The intake cam is were the exhuast cam should be and vice versa. The head is already on the car. Should I be able to crank the engine over even with the cams switched? I cannot align the everything up to get the timing belt on. For example, if I put the crank to its alignment (as well as everything else), I cannot align the camshaft sprockets to theyre correct timing. If I move the crank slightly off its mark, then I can align my camshaft sprockets correctly, but then cannot align my crankshaft back to its timing spot.


Basically I'm trying to determine if this problem is my cams being temporarily swapped, or is it another problem. Also, my CAS isn't installed yet (can't be right now with the cams backwards.

 

[talontsi01]

Alright. I found that the cams being switch was indeed the problem (what I thought all along).

The information I did find is about the differences between the intake cam and the exhuast cam. When the cams are layed flat next to each other, they look very similar. The difference is in the angle of the lobes. When you position the writing (the "A" symbol) parallel to the surface you set the cams on, you'll notice that the first lobe on the exhuast cam is about 10 degrees counterclockwise of straight up while the intake cam is about 10 degrees clockwise of straight up. Therefore, you can easily mistake the cams by a quick glance (given that you don't look at the CAS slit on the end of intake cam).

This is the mistake that my machine shop made, but I swapped the cams and now they line up fine.