I was adjusting the tappets yesterday and I noticed there was a lot wear in the rocker shaft. is it possible to change it without changing the head gasket? I know it's not a huge job, it's lack of time that's the problem.
Rockers
Best Answer tiger99 , 13 December 2015 - 05:35 PM
Take the head off, check the internals, and fit a new gasket. Otherwise there is a very high risk of gasket failure, and the head itself could possibly warp and need to be skimmed if the 5 or more front studs are torqued up normally while the rear 4 are loose. It is not going to take much longer.
Personally, I would clean up the combustion chambers, grind the valves, and fit new springs and oil seals, if I was having the head off. Saves the cost of yet another gasket when you have to do it later.
All this is quite easy on an A series engine.
Go to the full post#1
Posted 13 December 2015 - 11:40 AM
#2
Posted 13 December 2015 - 11:47 AM
#3
Posted 13 December 2015 - 12:12 PM
I know, you are undoing 4 of the head nuts
#4
Posted 13 December 2015 - 12:20 PM
#5
Posted 13 December 2015 - 12:29 PM
#6
Posted 13 December 2015 - 05:35 PM Best Answer
Take the head off, check the internals, and fit a new gasket. Otherwise there is a very high risk of gasket failure, and the head itself could possibly warp and need to be skimmed if the 5 or more front studs are torqued up normally while the rear 4 are loose. It is not going to take much longer.
Personally, I would clean up the combustion chambers, grind the valves, and fit new springs and oil seals, if I was having the head off. Saves the cost of yet another gasket when you have to do it later.
All this is quite easy on an A series engine.
#7
Posted 14 December 2015 - 12:02 PM
you're right, it's just me being lazy.
#8
Posted 06 April 2018 - 09:42 PM
#9
Posted 06 April 2018 - 09:52 PM
do you have a spare pare of posts? what i do is back the adjusters off to take the spring tension out of the system, remove rocker assy and then put a pair of posts back on and tighten the nuts so as to keep the head in place. then take my time sorting the new rockers with adjusters wound right back. fit torque down and adjust.
#10
Posted 07 April 2018 - 09:16 AM
do you have a spare pare of posts? what i do is back the adjusters off to take the spring tension out of the system, remove rocker assy and then put a pair of posts back on and tighten the nuts so as to keep the head in place. then take my time sorting the new rockers with adjusters wound right back. fit torque down and adjust.
I could just take the rocker assembly off my other engine that I'm building at the moment. Put the new rockers on that and do a quick swap. Do you bother to drain the coolant out?
#11
Posted 07 April 2018 - 10:17 AM
#12
Posted 07 April 2018 - 02:13 PM
How did you notice the play in the shaft?
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