It is not a trivial job to pull the radiator on a '37 Super Eight (or other similar late '30s Packard.

The 1937 shop manual specifies a 30 gallon per minute gravity flow and the 1937-38 Manual changes the flow to 36 to 41 gallons per minute.

I am curious to know if any reader has devised a creative way to run the test without pulling the radiator.

I have this radiator and don't know what it goes to.
Many years ago I parted out a 1938 Packard 120 hearse.
Would this fit most 120s????

The label says 'McCord B5-88"

Thanks for looking...

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Thanks, everyone, for all the input.
I appreciated it.

Bob

Thanks for all the great input!!!!

Now the $64,000 question......

Why are the base/thread sizes in mm and the gaps in inches???

Bob

The 1937-38 Super Eight Shop Manual specifies using the AC 103S or the Champion Y-4

In my inventory I found an AC 103 but it looks more like one that would be used in a Crosley.

The middle plug is the recommended AC 103S.

Also in the picture is an AC 106, which is a hotter plug and more readily available on the internet, and I

Yes, the local auto parts stores can get Champion 10mm UY6...

Does anyone know if the UY6 has the same characteristics as the 103S or even the 106????

Any answers, comments or suggestions are appreciated.

Thanks.

Bob

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Thanks for all the prompt responses and ideas.
Engine was built 20 years ago.
Since we are retired and travel a lot, our cars sit for extended periods sometime....hard to avoid that situation.

I have heard a lot of folks swear by MMO...and some claim it is just transmission fluid....who knows for sure?!?!...but will heed your advice and report back on results...

Thanks

Bob

Our '37 Super Eight has an intermittent problem of the #7 exhaust valve sticking open if the engine is not run for several days.
At other times, the engine starts fine, but a mile down the road the valve sticks open.
Sometimes, letting the engine cycle down to idle...the valve releases and runs smoothly.

I assume some varnish has built up on the valve.
When it is stuck open, I am able to remove the plug, use a small wood dowel and a light tap always closes the valve...for an indeterminate time.

Yes, I could remove the head, remove and clean the valve, but am hoping that someone has discovered a chemical solution for dissolving the residue.

I expect I will tear it down completely, have the block boiled out, new studs etc.
Car was amateur 'restored' in California 25 years ago...but have no idea what the rod babbitt looks like.....
This project will slowly bubble up on the priority list.

Thanks for looking...

Bob and Gail

The head of our Third Series SIX (1925) has been off for an indeterminate time. When I cranked the engine, I see unusual rings near the top of #1 and #6 cyl.
Cannot feel them.
Any ideas on the cause of this anomaly?????

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I have this light switch which I suspect came with a load of parts from a 1939 Super Eight.

IF anyone can positively identify it, I would appreciate it.

$30 free shipping continental US.

Thanks for looking....

Bob

p.s. LOTS of other stuff listed at
www.packardstuff.com

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