I just installed a new head gasket on my 93 240 DOHC and I put the pistons at TDC, set the head gasket on, set the head on, timed the lower timing chain(crank to idler gear). Now I wasn't sure about timing the upper chain to the cams; so I just mated all the marks on the chain to the cam gears and idler gear. On the chain there was two lighter marks and one birght one! I assumed the brighter one mated the mark on the idler gear; I am 99.9% sure i lined all of the marks up perfect. Then when we turned it over one full turn of the crankshaft the marks were off by one! Sorry if this is confusing anyone but I got a few ?'s about how to do it!
1)Where is the mark on the idler gear supposed to be when you start out?
2)How exactly are all of the marks supposed to be?
3)Do I even have it anywhere near close in the picture?
*I would download the Jim Wolf write-up but my comp. is way too slow!
Somebody please straighten me out on this thing!Thanx for any help guys!
*Help* ka24de Timing Chain Install
Re: *Help* ka24de Timing Chain Install (slpr240)
bump...........can anyone help me out?
i found this does it help?Align cams to sprocketsThis is the step that we missed the first time around--it's not nearly as hard as it sounds when you're actually trying to do it, and if I ever do cams on a KA24DE again, this is how I will do it, rather then messing around with marking the chain. First, make sure you are still at TDC. Then, make sure the chain isn't bound up anywhere on the idler pully. Put the exhaust cam sprocket in the chain, so that the slot forms a 90° angle with the surface of the head. (IMG:http://www.az240sx.org/albums2/telekine ... rocket.gif)
Once you have the sprocket lined up, put a wrench on the cam, and rotate the cam until the dowel in the cam lines up with the slot in the sprocket. At this point the sprocket should slide easily onto the cam and you can finger-tighten the cam sprocket bolt. Then, position the intake cam sprocket to match one of these two pictures, based on whether the dot pressed into the exhaust cam falls on or between links:(IMG:http://www.az240sx.org/albums2/telekine ... n.gif)Once you have the sprocket positioned, rotate the intake cam with a wrench until the dowel pin lines up with the slot in the sprocket. Slide the sprocket on, finger tighten, and check again to make sure you are still at TDC in cylinder #1.
Once you have the sprocket lined up, put a wrench on the cam, and rotate the cam until the dowel in the cam lines up with the slot in the sprocket. At this point the sprocket should slide easily onto the cam and you can finger-tighten the cam sprocket bolt. Then, position the intake cam sprocket to match one of these two pictures, based on whether the dot pressed into the exhaust cam falls on or between links:(IMG:http://www.az240sx.org/albums2/telekine ... n.gif)Once you have the sprocket positioned, rotate the intake cam with a wrench until the dowel pin lines up with the slot in the sprocket. Slide the sprocket on, finger tighten, and check again to make sure you are still at TDC in cylinder #1.