My bet is the thermostat studs are where it's hanging up.
Looking for advice on an Atomic 4 repair / replacement
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Originally posted by infy View PostThermostat isn't looking great.
Might take two soaks but it'll shine like new.
After that, use the same pan to boil it in water and test it.
(After that, buy some flowers)-Jerry
'Lone Ranger'
sigpic
1978 RANGER 30
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Originally posted by ndutton View Postit's pretty clear you have a good engine with stuck valves. Stuck open, when they stick it's always open.
Its great that you got a spare engine now, but let this gang talk you though getting those valves unstuck.
Then, restore spark and fuel. After all that, you will be super confident to go boating with a good understanding of your engine.
Politely dismiss your mechanics and donate the savings to my beer fund.
You "got" this, and we got your six.
Get the manual, get dirty, keep calm, and carry on.
Greetings,
Russsigpic Whiskeyjack a '68 Columbia 36 rebuilt A-4 with 2:1
"Since when is napping doing nothing?"
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This is where some of the Catalina-30 guys can really help out. As you have already noticed, there is a kick panel blocking access to the flywheel area. Neil and I, and I assume others, have cut a "port" in that panel for insertion of any of the crankshaft rotation tools. I prefer tool # "misc_01.1_285", which serves as a rotation tool, and will also function as a "pointer" for showing TDC. I'm sure that Neil will be adding some pictures of this "C-30 specific" Modification.
Tom
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OK, picture time.
Please know that there is a distinct difference between the MMI timing tool and their hand start crank. Both turn the engine manually but be sure to get the right tool for the job. To do otherwise is dangerous. A 13/16" socket can be modified by grinding slots to accept the crankshaft roll pin too.Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Originally posted by infy View PostI was hoping to find a bad head gasket... but this looks on. It actually looks pretty good(
Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Originally posted by ndutton View PostOK, picture time.
Please know that there is a distinct difference between the MMI timing tool and their hand start crank. Both turn the engine manually but be sure to get the right tool for the job. To do otherwise is dangerous. A 13/16" socket can be modified by grinding slots to accept the crankshaft roll pin too.
I suppose I can cut the fiberglass and make the same modifications.
This may be a silly question but.. what if I just wrap a towel around the prop shaft, put the transmission in gear, and grab the prop shaft with a vice grip? Turn the engine over that way?
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Below is a link to a 2005 thread in which Don Moyer comments on turning the engine using the prop shaft. FWIW, my own experience is that it is not difficult to rotate the engine using the prop shaft once the spark plugs are removed.
best regards,
jack.
Here's the link; Don's answer is a few replies from the top:
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Originally posted by infy View PostAh interesting. I also noticed that the hand crank could not fit due to poor access. It's a bit disappointing that Catalina essentially designed out the ability to service the engine without removing itLast edited by ndutton; 05-17-2019, 11:31 AM.Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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I'm talking to a guy who recommends turning over the A4 to find TDC by clicking it over with the starter motor. Not manually cranking it at the flywheel or prop shaft.
Interesting. I suppose I don't see anything wrong with that as long as it doesn't take too long.
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