dfhn you have to get the piston to TDC you do this by removing the spark plugs and sticking a small screwdriver in the spark plug hole then turn the engine manualy you will feel it come to the top then on that cylender you thighten those 2 rocker arms hand tight then once their hand thight you go 1/2 turn with a rachet the guy that told me this owns a machine shop and has been building engines for over 20 years
50 lb/ft lubricated with oil. Check out the link I posted.
http://torquespecs.xoompages.com/gmfs70-88chv8.htm the rocker studs are 7/16-14, same as the head bolts. should be torqued to about 65 ft.lbs.
on a '95 300 straight 6 with rocker arm bolts, not studs with nuts, the torque spec is between 17 and 23 foot lbs. if it has studs with nuts it is older and the specs are different so you will need to research that more.
There is no torque sequence just torque rocker arm studs to the proper torque
No you can get screw in studs mainly for high performance engines.
They are pressed in.
Your best bet is to buy the manual. There are multiple ways of adjusting rockers and it depends on the vehicle. Your loose rocker arm may also be an indication of a bent push rod, bent valve, or worn out cam. there are 2 types of rocker arm studs pressed in and threaded in. if it is pressed i suggest buying the same size threaded stud, tapping the hole and using 2 stacked nuts screw it into the hole in the head. if its threaded just remove the old one and thread in the new one, be sure to check torque value for this application answer if a rocker arm is broken, u need to remove rocker cover the rocker arms are all on one tube bolted to the head remove the nuts that secure this tube slide as many rocker arms as need to get to broken rocker arm, off the tube replace with new rocker arm replace others that u needed to remove. sit tube with rocker arms back in place making sure that u align all rocker arms to the proper place tighten securing nuts to proper torque over tightening will break the studs then adjust rockers to specs if engine has hydraulic lifters you will not have to adjust replace rocker covers using new gaskets if the rocker ram is loose, adjust to specs if engine has hydraulic ligters, torque to specs job is done
With the valve fully closed and the lifter fully at the down position, tighten the adjusting nut until there is no up and down travel in the push rod. Then tighten the adjusting nut 1/4 turn. This is only if you have hydraulic lifters. Tighten the rocker studs to 50 ft/lb of torque. These are the bolts holding the rocker assembly in place.
Some do some do not. Look at the stud, if it has a nut built into the stud bottom, then it is a screw-in
80# w/7/16th studs.
Rocker studs lubricated with oil, 50 ft/lbs. Valve covers 3 lb/ft.
The pump to studs tension is 15-22ft lb
there are both screw in and press in studs on 350s. it depends on application. i will say that fatory heads are most likely press in. high performance applications may be screw in.
100 Ft-lbs for 12mm wheel studs 150 Ft-lbs for 14mm wheel studs
Around 450, to 460, lift, 250, to 260 degrees duration, 116, centerline. New answer: If you run anything bigger then a 400 Lift, Then you MUST change the rocker arms to a LONG SLOT rocker arm are you will CUT the rocker arm studs in half. Even with the 400 LIFT it will still try and probley pull the rocker arm studs out of the head if the studs are pressed in like MOST stock heads are.
torque to 17ft/lbs then 90 degrees..........this is done this way because sometime studs twist
There is no adjustment. Rocker arm nuts/studs are torqued down to specs and that's it. If they are clattering you have worn out valve train parts.
There probably "pressed in" so take a couple of old nuts or balls from the rocker arm, put the nuts on the shaft, then put the rocker nut on and just tighten it up, it willl pull the shaft out of the head. Good Luck
you have to remove the pressed in studs ,and tap the hole with the proper thread size for the threaded stud. this may require drilling the heads with the proper size drill, for the tap size you need. you must make sure that the new threaded studs are bigger than the pressed in ones, or you won't be able to thread the stud holes.
you can do both one by cuonting thread on rocker studs you should see about 4 to 5 two you can start engine tighten down till clatter stops then half turn back
I think the only time you have to do any cutting is when you're using guide plates.
Front studs on a 1999 Honda Accord are pressed in. First the studs must be removed using a hammer or press. Once remove each stud can be pressed in.
You must have a modified camshaft. The lift on the cam is to high of a lift and the rocker arms are binding on the studs. You need to use a long slot rocker arms to stop that. You also need to check the rocker are studs and make sure they are not cut in half.