need help with cam install, timing and balancer removal
HI all.My 93 Vitara, G16B engine has done a head gasket. I've replaced the gasket and put the head back on, now i have a problem with the camshaft. I could not get it back in so i backed of the rockers (i think thats what there called in these engines) and now im worried they won't be set to the right heights on the valve springs as I noticed they're adjustable. Also I need to get the harmonic balancer off but it's not budging. Do those 5 bolts need to be unbolted and if so whats size are they.10mm seems to fit but there not undoing. Once I have the balancer off Im also lost for how to set the timing right and the correct torque specs. Sorry for all the questions.My repair manual is on the way but I need the car on the rd yesterday.
For the harmonic balancer, I believe that the bolts are 8mm - there are 6 of them, perhaps that's your problem?? Normally after the 6 bolts are removed, you just tap on the balancer and it falls off.
If you search the forum, you can get detailed info on how to do the timing belt. First however, you should remove the crank pulley and check the keyway to make sure that it isn't sheared. The crank pulley bolt must be torqued to 94 ft/lbs. Simply put, the crank key is at 12:00. The cam key is at 6:00. You use the E marks on the cam pulley (there are often I marks as well, as the pulley is also used in the DOHC engine). With the new belt on, the right side of the belt (as you are standing in front of the car) should be tight - all looseness on the other side of the belt. Then when you release the idler pulley, the spring on it will set the right tension. The t-belt is set to cylinder #4 firing.
For the valve lash, spec for all is .006 inches. When looking at the car from the front, you have 4 sets of 2 valves on the right and on the left. You adjust the first and second set on the left (as you are standing in the front, looking at the car) and the first and third on the right first (cylinder #1 firing). Then rotate the crankshaft 360 degrees clockwise till you are at top dead center again (cylinder #4 firing) then set the third and 4th set on the left, and the second and fourth set on the right to .006.
I'm sure others will come in to fill the gaps, or search the forum or ask for other info you need. Good luck.
Sad but true story: When I first tried to work on my first Geo at 17, I tried to rip the bottom crank bolt out to remove the harmonic balancer, that thing would not budge even with an older impact... then I felt down and looked with flashlight, felt really dumb after that.
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