synchronizing camshafts

[emariscalhay]

i have not been able to find instructions on how (while assembling the 997 carrera engine) to synchronize the four camshafts.

i,e, for the 1,2,3 head, placing cyl 1 on top dead position (on belt pulley), i pressume the exhaust camshaft is at all closed valves (no cam actuating), and it's slot at the end is horizontal.

but what about the intake camshaft??????

i know i can still be wrong with my assumption.

please, can someone help me?

eduardo

it is a 3.6 ltrs. carrera 2005 997 engine

[997_rich]

I haven't dug into this engine but of course the the crank should be at TDC. Usually the ends of the camshafts have markings that show tdc alignment. I don't know what the end of these look like but on a BMW for instance they are square with punch marks that face "up" on the head. There is a tool that most shops have to grab the end of the camshafts and lock them when servicing the engine. I've attached a link for that tool for porsche. you can see how that tool grabs the end of the camshafts. I suspect they're square like BMW.

http://www.kochtools.com/index.php?p=product&id=147

[997_rich]

by the way TDC on cylinder one is with BOTH intake and exhaust closed (off cam).

[JFP in PA]

These engines are timed using a special tool the holds the cams in the correct positions using the slots on the end while the engine is locked at TDC. Do a search, been covered before..................

[logray]

http://forums.rennli...230-post20.html (3.6L variocam plus engine, this is half the procedure) Edited March 8, 2012 by logray