if you can remove the broken studs without doing damage, you may be able to redrill the holes with the proper tap drill, and retap the hole for the screw in studs without removing the heads. careful you don't drill through the head, and get drill chips in the engine. i guess it depends on how good you do machine work.
pressed in..
They are pressed in.
By removing the valve cover from the engine, then removing the rocker nut on the bad rocker. Refer to a technical manual for torque specifications, as this must be properly torqued!!!
yes
I replace the heads with first starting by draining the coolant then removing the exhaust as neccasary then the intake manifold and distributor then the valve rocker arms and pushrods then unbolting the heads.
Subject: Sportster 1200 rear rocker coverQuestionI've replaced my front rocker cover gaskets due to an oil leak. Now I can't get the rear rocker cover off. I've removed the top bolts but the frame is blocking the removal of the cover. Is there an easy way to remove the covers?AnswerSorry I didnt answer you sooner. My hard drive decided to go south!The rocker cover will come off without removing the motor. Its a tight fit and you have to turn it to get it out, but it will come out. If you are removing the lower rocker cover you have to remove the pushrods to get it out.Good luck and happy ridingMike
Yes you can, as long as you did not bother the other ones. Just adjust the one you replaced.
No you can get screw in studs mainly for high performance engines.
Yes but you will also have to remove the valve cover, rocker arms and push rods. If your using the old parts over keep them in order and replace them in the same position as they came out.
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
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
Very hard to tell without removing a head, but if it has the factory intake and rocker covers the 307 would have an oil fill tube sticking up near the front of the intake with no fill plugs or cap in the rocker covers.