bob hattler	Re: 1940 Packard 1801 won't start	#41
Quite a regular Joined: 2012/3/22 19:35 Last Login : 2017/1/25 21:13 From Sanford Group: Registered Users Posts: 32	Compression test with new gauge and highly experienced mechanic. Bob Posted on: 2017/1/12 12:10

Joe Santana	Re: 1940 Packard 1801 won't start	#42
Home away from home Joined: 2008/10/31 14:20 Last Login : 5/1 16:00 From Potomac, Maryland, USA Group: Registered Users Posts: 1900	This may help him: https://www.packardinfo.com/xoops/html/downloads/1940_IllustatedRepairManual.pdf Posted on: 2017/1/12 12:21

fredkanter	Re: 1940 Packard 1801 won't start	#43
Home away from home Joined: 2016/6/28 15:05 Last Login : 2023/4/21 22:17 From Boonton NJ Group: Moderated Users Posts: 854	A timing chain that has jumped a tooth will not cause most cylinders to have zero to extremely low compression !!!!!!!! The engine will still run, however with low power. In 56 years I've never seen a Packard with a chain so loose that it jumped timing, besides the engine was rebuilt 3 years ago!!!!!!!!!! Posted on: 2017/1/12 12:27

Owen_Dyneto	Re: 1940 Packard 1801 won't start	#44
Forum Ambassador Joined: 2007/3/14 18:01 Last Login : Yesterday 11:48 From New Jersey Group: Registered Users Forum Ambassadors Posts: 16631	OK, sounds like compression values are correct. In case you don't have it, here is the valve timing from Motor's Manual, 12th Edition: 1940-47 "110" and "120" -- With No. 1 intake valve set to 0.013" clearance (.0125 on 1940) the valve should start to open one degree before TDC. Posted on: 2017/1/12 12:30

JT120	Re: 1940 Packard 1801 won't start	#45
Home away from home Joined: 2010/1/29 8:48 Last Login : 2/29 12:19 From North Carolina Group: Registered Users Posts: 113	"Compression test with new gauge and highly experienced mechanic. Bob" Does that mean the compression was good on all cylinders?? Posted on: 2017/1/12 19:08

41 special 1485	Re: 1940 Packard 1801 won't start	#46
Not too shy to talk Joined: 2013/9/21 6:23 Last Login : 2017/3/25 16:18 From southern NH Group: Registered Users Posts: 17	Is it possible that the overheated engine caused the head gasket to fail? Perhaps the cylinders became water logged and created a situation where the engine was cranked while it was hydro-locked. Thus bending valves? More clues please... Posted on: 2017/1/12 20:56
	Stop wasting time......get back to work!

JWL	Re: 1940 Packard 1801 won't start	#47
Home away from home Joined: 2008/2/16 18:39 Last Login : Today 13:17 From Santa Fe Group: Registered Users Posts: 5929	Quote: fredkanter wrote: A timing chain that has jumped a tooth will not cause most cylinders to have zero to extremely low compression !!!!!!!! The engine will still run, however with low power. In 56 years I've never seen a Packard with a chain so loose that it jumped timing, besides the engine was rebuilt 3 years ago!!!!!!!!!! Fred, I have seen engines with jumped timing chains that could not be restarted. A 3-year old rebuild would seem to negate a loose chain, but who knows what was installed and how it was installed. And, please stop screaming every time you try to make a point!!!!!!!!!!! (o[]o) Posted on: 2017/1/12 23:14
	We move toward And make happen What occupies our mind... (W. Scherer)

flackmaster	Re: 1940 Packard 1801 won't start	#48
Forum Ambassador Joined: 2007/12/13 0:29 Last Login : Yesterday 17:48 From Dallas, TX Group: Registered Users Forum Ambassadors Posts: 2037	I agree wtih Fred that we are still lacking detailed diagnostics to suggest remedies. I think Fred is just .....ummm... Passionate with his willingness to help. And we've been through prior long term problems with Bob Hattler's car...remember it always stalled coming to a stop under a full moon? OH, and no doubt its a Kanter reproduction timing chain (to blame....KIDDING) DAF Posted on: 2017/1/13 0:02

bob hattler	Re: 1940 Packard 1801 won't start	#49
Quite a regular Joined: 2012/3/22 19:35 Last Login : 2017/1/25 21:13 From Sanford Group: Registered Users Posts: 32	how is it possible to have compression on one cyl? Blown head gasket? A slipped timing chain would actually cause near the same compression on every cyl, as the exhaust valve would open at the specified interval for each cyl. I believe Fred is correct, it's not the chain !!!!!!!!!!!!!!! Bob Posted on: 2017/1/13 7:23

Owen_Dyneto	Re: 1940 Packard 1801 won't start	#50
Forum Ambassador Joined: 2007/3/14 18:01 Last Login : Yesterday 11:48 From New Jersey Group: Registered Users Forum Ambassadors Posts: 16631	I believe Fred is correct, it's not the chain !!!!!!!!!!!!!!! A number of us have been suggesting that right along for a while now, so why the reluctance to just check the valve timing to confirm? That was suggested as far back as post #3. Posted on: 2017/1/13 11:03