I have an early, unserialized CI head. I don’t recall issues specific to the early prod runs, though I know some heads have had pushrod geometry issues depending on the run.
Anyone know something I don’t?
Anyone know something I don’t?
Any issues with early CI heads?
- Thread starter Invectivus
- Start date
Be careful on enlarging the push rod holes, people have hit water in doing so.
I haven't seated it on a block yet, So I have no idea of the alignment ATM. But yeah, that was the post I was thinking of, where they sleeved the pushrod hole. that's a thing I hope I don't run into. I need some work on it, I just want to verify any issues to remediate all at once rather than make several trips to the shop.
I bought a cylinder head back in 2008. Been On car for about 10k.. No issues. You must have had one of the very first cylinder heads. I do not recall anything about pushrod geometry issues.. I do know classic inlines Valves, that they sold with head, were not long enough, causing you to use 1.5 rockers or buy longer valves to accomadate different rockers.. Also the single springs that came with heads were not good, and came with no spring seats...
I have a CI aluminum head # 035. I ran it 10 minutes on my 200 build before the lobes on the cam rounded off and the engine quit running. My fault, trying to break in a new Clay Smith cam and lifters with dual valve springs. I bought a 65 long block with good compression, adjustable rockers. I put the block on an engine test stand, connected all the systems and tested them, everything is functional. There is 120 lbs compression in each cylinder, 30 psi oil pressue at ifle, 50 psi at 250o rpms. No smoke no knocks or clatters. Now I have pulled the stock head and am preparing to install the aluminum head, 4bbl intake and headers. I am keeping the stock, all ready broke in cam snd lifters. What fo you all think of this plan?
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