I have a young fella named Asa who has been coming over on some Thursdays and we've been messing with the old Buick Nailhead just so I can show him how an engine fits together. Among his many learning experiences is him watching me screw up and then recovering from those errors and moving forward. For example, I tried pushing the pistons out w/o reaming the ridge and pounding the hell out of the pistons w/o success. The rings were SO stuck that I couldn't convince them to let the piston pop out which is something I've gotten away with in the past. So I poked the pistons back down, ordered up a ridge reamer, showed Asa how that works, and popped the pistons out easily.
Today we found out why one piston had broken ring lands and he got to learn about how cylinder heads go together in an OHV engine at the same time. The exhaust valve head for the piston with broken ring lands was completely missing! So we took those two valves out and Asa got another couple of goodies for his bedroom shelf. No clue where that valve head went but I'd guess out the exhaust port and down the exhaust system
Interesting point - I'd forgotten how soft those old valve springs were. The exhaust valve stem (remember, no head on that one) came out with a single swat with a mid-sized hammer and socket. We used the valve spring compressor for the other one so I could show him the right way as well as the Primitive Pete method. Anyhow, I could almost have pushed those springs down with my hand. Those old engines had a max of, what, 4500 RPM or so so I guess not much spring was needed.
And finally - If somebody wants a 322 Nailhead (no longer frozen up) come and get it. It'll need a rebuild w/cylinder bore but all of the castings etc. look to be usable. If nobody speaks up soon it'll go for scrap. I have no use for it but it sure would be sweet in a rod and I'd like to see it get used.
Dan
Today we found out why one piston had broken ring lands and he got to learn about how cylinder heads go together in an OHV engine at the same time. The exhaust valve head for the piston with broken ring lands was completely missing! So we took those two valves out and Asa got another couple of goodies for his bedroom shelf. No clue where that valve head went but I'd guess out the exhaust port and down the exhaust system
Interesting point - I'd forgotten how soft those old valve springs were. The exhaust valve stem (remember, no head on that one) came out with a single swat with a mid-sized hammer and socket. We used the valve spring compressor for the other one so I could show him the right way as well as the Primitive Pete method. Anyhow, I could almost have pushed those springs down with my hand. Those old engines had a max of, what, 4500 RPM or so so I guess not much spring was needed.
And finally - If somebody wants a 322 Nailhead (no longer frozen up) come and get it. It'll need a rebuild w/cylinder bore but all of the castings etc. look to be usable. If nobody speaks up soon it'll go for scrap. I have no use for it but it sure would be sweet in a rod and I'd like to see it get used.
Dan
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