I pulled the valve cover on the new to me M puller just to have a look around. First thing I noticed was what appeared to be new valves, springs, and retainers. That was a pleasant surprise in itself. Then I noticed the springs looked extra heavy and had another smaller set inside them, that would make good sense because when I checked the rpm yesterday it was turning a tick over 2800. The retainers were dished inward and looked somewhat custom, I am wondering if they are titanium. I then proceeded to pull the governor cover and found out how they were getting the rpm. The spring is gone a nicely made piece of round bar was in it's place and the stop screw was missing. Well, I will have to rob a junk governor of the stop screw and get a new spring from TSC and get my rpm back down to around 2000 where I am legal.
Anyways, back to my question. The head has no casting number on it. That was really the whole reason I even pulled the valve cover. Right there in the middle were the casting numbers should be, it is all flat. Does not appear to be ground flat, but cast that way. Would anyone have any ideas?
Thanks!
Anyways, back to my question. The head has no casting number on it. That was really the whole reason I even pulled the valve cover. Right there in the middle were the casting numbers should be, it is all flat. Does not appear to be ground flat, but cast that way. Would anyone have any ideas?
Thanks!
