a bit of luck it seems then ,push rods etc is all the same just bolt it all up ,give the bolts a good tap with a hammer to shock the threads as well as working back and forth with spanner along with penertrating fluid ,they are prone to shear
how about running a tape down the threaded hole and blowing out with a air gun before fitting the head with new bolts
I will rig up something that hammers the bolt heads and turns at the same time - impact wrench with an insert the right length to give a bit of hammering at the same time. If I use a lightish hammer I might get away with it.
I'll find out tomorrow. There's a lot of cleaning to do as well. The head was black with accumulated oil/dirt on the outside, in the way that series heads can be. I couldn't wait earlier and started before getting the "old clothes" on. Mrs not impressed!:director:
do that and you stand a good chance of either breaking a bolt or striping threads. Nothing better than a good cleaning
how many miles and what type of oil and weight did you use. what was your running oil psi
A few pictures - I know you all like the pictures!
The new series head:
View attachment 52929
And the valve tops:
View attachment 52930
The hot spots had been put in with roller pins:
View attachment 52931
The valves all came out easily. Both valve flanges and seats look OK. However, I'm not happy with having to grind 1mm off the tops of most of them, so new valves will be ordered today. The valve guides were good as new.
The old valve seals were hardened like bakelite, certainly weren't sealing much!