Re: Resurrecting a 1951 Henney-Packard Parts Car
Posted by Packard Don On 2023/11/7 20:42:14
Odd! I was in the middle of posting this and trying to add a photo when a CAPTCHA popped up! I’ve never seen that on this site before. I had to log back in but fortunately I had copied what I had written into the clipboard.
I remembered having read years ago about the rolled threads but couldn’t remember when the change took place or which direction it went. Anyway, I suspect that any damage the bolts may have done is more to themselves than to the block but unfortunately I can’t run a tap into the holes to be sure. Looking at the photo, though, the course threaded bolts look suspiciously like 1/2-13s so I’ll check tomorrow. It may be necessary to Heli-Coil where they had been. Rolled threads make more sense as they are far stronger than cut threads.
That said, I managed to get the head off but I’m a nitwit. I tried, fortunately rather feebly, to break it free with one nut still attached! Once I discovered and removed it, I got the head off in short order but it necessitated actually climbing into the engine compartment which wasn’t at all easy at my age and with the car so high.
Other than dirt that fell in off and out of the head it’s relatively clean in there and with a cursory look the bores look good too. I noticed a couple days ago that the spark plugs are new even though the top sides are rusty. I have no recollection of having changed the plugs and the engine was run at least once since I’ve owned it but they show no sign of it.
Attach file:
C6999820-B532-4982-99B9-5C8A2AB24CDE.jpeg (288.02 KB)
2B53709C-4367-4402-B773-664FF73A8E7A.jpeg (472.54 KB)
24ECBAAC-AC52-4881-9A89-1F971F00CA03.jpeg (425.56 KB)
E4AC93F5-6BAF-4766-80CC-2CFC945F1A7D.jpeg (350.57 KB)
I remembered having read years ago about the rolled threads but couldn’t remember when the change took place or which direction it went. Anyway, I suspect that any damage the bolts may have done is more to themselves than to the block but unfortunately I can’t run a tap into the holes to be sure. Looking at the photo, though, the course threaded bolts look suspiciously like 1/2-13s so I’ll check tomorrow. It may be necessary to Heli-Coil where they had been. Rolled threads make more sense as they are far stronger than cut threads.
That said, I managed to get the head off but I’m a nitwit. I tried, fortunately rather feebly, to break it free with one nut still attached! Once I discovered and removed it, I got the head off in short order but it necessitated actually climbing into the engine compartment which wasn’t at all easy at my age and with the car so high.
Other than dirt that fell in off and out of the head it’s relatively clean in there and with a cursory look the bores look good too. I noticed a couple days ago that the spark plugs are new even though the top sides are rusty. I have no recollection of having changed the plugs and the engine was run at least once since I’ve owned it but they show no sign of it.
Attach file:
C6999820-B532-4982-99B9-5C8A2AB24CDE.jpeg (288.02 KB)
2B53709C-4367-4402-B773-664FF73A8E7A.jpeg (472.54 KB)
24ECBAAC-AC52-4881-9A89-1F971F00CA03.jpeg (425.56 KB)
E4AC93F5-6BAF-4766-80CC-2CFC945F1A7D.jpeg (350.57 KB)
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