Packard Motor Car Information

Re: Ken's 1937 115C Touring Sedan

Posted by Ken_P On 2014/9/28 12:12:58

Thanks for all of the information.

Valves- I got all of the valves out and cleaned up. I ended up using a rented Autozone spring compressor- it worked just fine with the straight jaws. After cleaning up the valves, they are all straight and crack free. The margin on all the valves looks good, so I don't think they have been ground a million times. I did see some corrosion that concerns me. Also a few extra markings on the head of the valve. #1, #2, and #4 intake, plus #3, #5, and #6 exhaust. #1 exhaust valve also shown for comparison. These corroded areas are all on the top of the valve- does that mean I just shouldn't worry about it? #3 exhaust seems corroded on the seating side as well.

I had two broken valve springs and a third that isn't factory. #1 intake and #6 exhaust were broken, and #5 exhaust is not stock. Smaller diameter, larger wire, taller, and a different color. I'll be replacing those three, at a minimum.

Valve guides- the valve guide for the #2 exhaust valve is lifted. At first I thought it was modified- there are some service bulletins that show clipping the exhaust valve guides, but it looks like it just pushed up. Should I just tap it back down, replace it, or replace all of the valve guides? I don't have the special Packard tools- what should I use to do the work?

Pistons- At first, I thought all of my pistons were good. They appear to be factory, they are stamped 9 3, and then most are stamped D, with two stamped C. The D means they are 0.0015" over, and C means 0.001" over, according to the service manual. But... number 2 has two chunks missing from the top edge, and both 2 and 3 have a lot of corrosion on them. I don't see any evidence of a leaking head gasket, so maybe this is from a previous issue? Should I replace either one? Again, my goal is to do no machine work to the block, because of the crack on the water side. There is a also a chunk of missing material the size of a small pebble next to one of the oil pan holes. Not a big deal.

There is also a small piece of mystery material. I thought it was piston ring, but none of the pistons are missing anything. I found it on the block between 5 and 6. Any idea what it is? It is thinner than the #2 ring and thicker than the oil ring retainers.

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