Looks like I need to overhaul my rocker shafts on Winston.

 

Yes...

Pay attention to the pinholes that get clogged and create a tick.

Changing your oil more often may help keep down the buildup.

 

Wd-40 does a nice job, or you could dip them in gas or diesel if you have the space and a container. Oh, and a mask.

 

i've used oven cleaner on a number of engines and components, at least as a first step. set them in a disposable baking try and spray them -- in a well-ventilated area of course. you don't have to worry too much on steel parts (like rocker shafts) but aluminium can be damaged if you leave the cleaner on too long.

 

I bought him with 250k and have only driven him 2200 this first year I've owned him. I just changed the oil, which was still amber. I am cleaning the valve covers with oven cleaner, and yes, you can"t leave it on very long before rinsing it off.I did the PCV upgrade. Before I remove the rockers, I am putting each cyl at TDC and hooking up an air supply to check for air escaping via the rings & valves. I also bought a fuel injector tester/cleaner. More pics and details to follow.

 

Trying to remove the first post from the RH rocker shaft, it seems pretty siezed. Yes, some of the pin holes are plugged. Most of the rockers don't want to move easily. Glad I am doing this. Any tips to remove the posts? This shaft assy appears fragile...

 

i have not done it,so no advice, but RPi Engineering site may have info if you search it.

 

YouTube is my friend, you put the posts in a vise and gently twist the shaft by inserting a suitable rid in an oil hole or post hole and DON'T use too much force. I cleaned the shaft with HD Easy Off first to remove as much varnish as possible. Going to use a brazing rod to clean out the eensy beensy oil passage holes (what a joke).

 

I decided against disassembling the rocker shafts. I am clearing the oil pin hole in the head and notice that my brazing rod goes in deeper in one hole than the other. Is this normal?

 

This is the right bank rocker assy after cleaning, from left to right 8-6-4-2. There is heat bluing on the shaft between 8 & 6.