6Coronet6440
New Member
Hello,
Wish I had a better reason for my first post. I purchased my first old Mopar and first classic car in general this past April, a 66 Coronet with a 440. The engine itself is a 77 block which has been upgraded with new rods, pistons, agressive cam and I suspect close chamber iron heads. Unfortunately I don't have any paperwork/info on it, as the previous owner bought the motor from somone else who built it for a drag car but gave up on his project, so it ended up in this car. Its definitely a pretty potent engine, so I'm inclined to believe what I was told, definitely not a truck/motorhome engine.
I haven't really driven it more than a handful of times due to the craziness going on, but last week I figured I should get it out before the weather gets bad. Started her up, let it warm up and set off, I almost immediately noticed a ticking/chattering noise I hadn't heard before but figured it was probably just a sticky lifter and it would go away after it was run for a bit. When I got on it or was just crusing around, I couldn't hear anything other than the usual lifter noise, however upon deceleration when approaching a stop, the noise would return very distinctly from about 1700 rpm down to about 1100 and then would dissappear again as the car returned to idle (which is set at 850rpm). The same thing occurs when you first set off, you hear it for a second but as soon as the car reaches about 2000rpm, it seems to vanish.
Figured I'd try is changing the oil just to see if it would make a difference, the previous owner told me it was changed in spring, but it was very dark, so I'm not sure if that's accurate. The magnetic drain plug had no obvious metal particulate, and other than being dark, the oil didn't show any obvious suspended metallics. Put in a new wix filter and VR1 10W30 oil. Took it for a drive and while better, the noise is still there. Same rpm range, just not quite as loud.
The only other thing I figured I'd check is the old oil filter, see if there was any chunks in there. Cut it open and definitely see a little glitter, mostly in the oil itself, there are a few flecks stuck in the filter material itself but not much at all. Sort of gold-ish/silver in color. I'll try to attach a picture (sorry for the quality), the orange bits are engine paint that fell into the pan while I was working. I know a little metal is normal, not sure how much would be concerning.
The car idles, isn't down on power and has great oil pressure. Obviously, i haven't driven it very far since the noise started, and would like to fix it before I grenade the engine if its something serious.
So what do you guys think? I'm no mechanic and really don't know much about engines other than basic service so I figured it would be better to ask here before I jump to conclusions. Sorry about the long post but I figured the more details the better.
Thanks,
Dave
Wish I had a better reason for my first post. I purchased my first old Mopar and first classic car in general this past April, a 66 Coronet with a 440. The engine itself is a 77 block which has been upgraded with new rods, pistons, agressive cam and I suspect close chamber iron heads. Unfortunately I don't have any paperwork/info on it, as the previous owner bought the motor from somone else who built it for a drag car but gave up on his project, so it ended up in this car. Its definitely a pretty potent engine, so I'm inclined to believe what I was told, definitely not a truck/motorhome engine.
I haven't really driven it more than a handful of times due to the craziness going on, but last week I figured I should get it out before the weather gets bad. Started her up, let it warm up and set off, I almost immediately noticed a ticking/chattering noise I hadn't heard before but figured it was probably just a sticky lifter and it would go away after it was run for a bit. When I got on it or was just crusing around, I couldn't hear anything other than the usual lifter noise, however upon deceleration when approaching a stop, the noise would return very distinctly from about 1700 rpm down to about 1100 and then would dissappear again as the car returned to idle (which is set at 850rpm). The same thing occurs when you first set off, you hear it for a second but as soon as the car reaches about 2000rpm, it seems to vanish.
Figured I'd try is changing the oil just to see if it would make a difference, the previous owner told me it was changed in spring, but it was very dark, so I'm not sure if that's accurate. The magnetic drain plug had no obvious metal particulate, and other than being dark, the oil didn't show any obvious suspended metallics. Put in a new wix filter and VR1 10W30 oil. Took it for a drive and while better, the noise is still there. Same rpm range, just not quite as loud.
The only other thing I figured I'd check is the old oil filter, see if there was any chunks in there. Cut it open and definitely see a little glitter, mostly in the oil itself, there are a few flecks stuck in the filter material itself but not much at all. Sort of gold-ish/silver in color. I'll try to attach a picture (sorry for the quality), the orange bits are engine paint that fell into the pan while I was working. I know a little metal is normal, not sure how much would be concerning.
The car idles, isn't down on power and has great oil pressure. Obviously, i haven't driven it very far since the noise started, and would like to fix it before I grenade the engine if its something serious.
So what do you guys think? I'm no mechanic and really don't know much about engines other than basic service so I figured it would be better to ask here before I jump to conclusions. Sorry about the long post but I figured the more details the better.
Thanks,
Dave
