Metal Shavings and RTV in my Oil Pan and A lifter tick

W

wolfman65

New member
Hello all, I am new to this forum and I'm hoping to get some help. I have a 1975 Scout 2 with a 392 and tf727 out of a 1972 Travelall. It has developed a tick that does not go away at any rpm or if I warm it up. I just keeps ticking. I had a mechanic friend of mine listen to it and he thinks its a rod bearing that has gone out, but after extensive reading on these forums I believe its something to do with the lifters. The tick seems to be coming from the passengers side but I'm not really for sure, its loud and seems to fill the whole engine compartment. I dropped the oil pan out of it yesterday so I could check for metal in the pan and I did have some metal but nothing like what I saw in another post where the cam bearing had gone out. Also in my oil pan was alot of rtv presumably from the previous owner using too much rtv as an oil pan gasket. There were even pieces of rtv stuck in my oil pump pickup screen could the rtv have blocked some of my oil flow and caused my lifter tick? I read after I took the pan off that I should use 7 quarts of oil in a double hump oil pan 392, which is what I'm going to try once I put the pan back on but is there anything else I should check while my pan is off that could be the cause of the noise? Thanks in advance for any help!
-caleb
 
Last edited:
You have the pan back on now? You need to inspect the rod bearings. It's an easy process to do and even to install new shells.

On you question. You should check the oil drain back holes in the rocker area. If they block up from crap they won't allow the rocker oil to get back to the pan.

Other possible causes for the tickey tap could be a flat lifter. If you want, while you are checking the drain back holes you could pull the rocker assemblies and remove the lifters from the noisy side one by one. If the cam side face is cupped chances are the cam is done.
As you said, run 7 quarts in the Scout.
 
If a lifter or valve is stuck the tick will be 1/2 engine speed. If you suspect it's a rod knock sometimes pulling the plug wire while the engine is running will quiet it down. Piston slap is another possibility. Can you record the sound and post?
 
Once I put the oil pan back on I will try to take a video and post it on here, I'd wanted to at least check out the bearings before I put the pan back on though. Also I was wondering about this pre-oiling procedure that you should do if an International has been sitting without oil for awhile, how long can it sit without oil until I should do that? Thanks
 
If you're going to pull the rod and bearing caps off just oil them well before assembly. Since you'll be there you might want to get some plastigauge to see what the actural clearances on the bearings are. Unless you've lit it sit for a year or more before posting I wouldn't bother with a pre-oil procedure.
 
fdchappie said:
if you're going to pull the rod and bearing caps off just oil them well before assembly. Since you'll be there you might want to get some plastigauge to see what the actural clearances on the bearings are. Unless you've lit it sit for a year or more before posting I wouldn't bother with a pre-oil procedure.
Click to expand...

Alright thanks I read about that pre-oiling and I didn't really see a time period lol.
 
Hey thanks for all the help guys, I had a mechanic friend over and I had him help me check the bearings. Turns out I had one seriously messed up #7 connecting rod bearing. I'm going to order a new one and fill her back up and hopefully fix the problem. I have one more question though, I've been reading a lot about different oil weights to use and I'm wondering if I should use 15w40 or go with 20w50. I live in central Missouri so the temperature variances are pretty much anyone's guess lol. Thanks!
 
With winter on the way, I don't think anyone would fault you for going a little lighter until your next oil change most likely in the warmer months. I'm in sw orygun where +20 is frigid on a biblical scale, so I can run 20w-50 year round. You otoh might need to employ the fall/winter vs. Spring/summer blend routine.
 
You must log in or register to reply here.
Back
Top