I found this stuck to my magnetic oil pan plug today when changing the oil in my GT350. 289 HIPO with aftermarket cobra oil pan. Need help in identifying.
Any ideas?
Jim
It looks like one of the four rivets that holds the shield on the bottom of the intake manifold.
Just a guess, but could it be from the valve cover?
Crazy, I think the intake might be correct, but I would start with the valve covers and then remove the intake. What a journey some parts can make in an engine! Good luck and it you find it was either or, you are a lucky person! PHEW!
I'd pop the intake off as the remaining rivets could be next to vibrate or drop loose and will need to be inspected. Good luck!
Buy a lottery ticket - you're lucky
Definitely either from a valve cover baffle or the shield on the bottom of the intake manifold. Start with the valve covers, much easier than the intake. Best of luck, please let us know what you find.
Those rivets are typically a real pain to get out when you want them to . Many times guys will tap the hole and put a bolt in its place . I would be concerned that the hole would be a little too wallerd out for the rivet to be able to tighten up going back in again. At the very least put some lock tight in the hole too if you put back a rivet or even a bolt for that matter.
Valve cover rivet by size . The intake baffle rivet is larger in diameter. They often come out when the deflector is "manipulated" to clear poly locks.
Randy
Quote from: Bob Gaines on June 06, 2019, 12:01:51 AM
Those rivets are typically a real pain to get out when you want them to . Many times guys will tap the hole and put a bolt in its place . I would be concerned that the hole would be a little too wallerd out for the rivet to be able to tighten up going back in again. At the very least put some lock tight in the hole too if you put back a rivet or even a bolt for that matter.
LOL, I always wondered the correct spelling of that word 'cause my (late) Dad used it all the time ;D
Does the Oil Pan have Windage Trays? Could it be from that?
Please post the result.....when you find out.
really small distributor drive gear? seriously, keep us posted.
Valve cover rivet.
Quote from: tesgt350 on June 06, 2019, 11:28:14 AM
Does the Oil Pan have Windage Trays? Could it be from that?
Nope. No rivets in a tray.
Figures. Try getting them out when you want them out. Lots of swearing and beer required!
Easiest way to remove them is to MIG weld a hex nut to them ( though the center of the nut ) and turn them out with the nut. You will need new ones to reinstall the baffles.
Rodney
Thanks for all the helpful posts!
Well, good news and bad news. The rivet was from the passenger side valve cover. The baffle had been "manipulated" for clearance as noted in a previous post. The bad news is that I am missing a second rivet... According to my records, the last time the valve covers were off was 10 years ago. So the other rivet could have been "lost" a long time ago. So now how do I go about chasing it down? The oil has been changed every 1000-3000 miles (once a year) for the past 10 years, so it may have slipped through in the past. I screened the oil this time looking for it, but have not in the past. I did check all around and it is not sitting anywhere I can see. There was no baffle on the drivers side cover, and now there is no baffle on the passenger side...
And Bob, great use of the word "wallerd"...lol
Jim
where's the loose baffle?
As for the missing rivet, drop the oil pan look in there.
possible it made it to the oil change drain pan? Might be wedged in the closest oil drain hole in the head as well
Jim,
It could easily be "hiding" in one of the "cheeks" of the Cobra oil pan. The worst part of this deal is the stock oil pick ups have an "anti sludge ring" ( read open hole) under the sheet metal plate. It is large enough to allow the rivet to get in and jam the pump gears in a worst case scenario.
Randy
Randy,
I thought the oil pickups had screens.
Yes they do but if you look under the 1" wide plate by pushing the screen up , you will see the "ring" which is an open hole.
Randy
Quote from: acman63 on June 07, 2019, 11:45:03 AM
possible it made it to the oil change drain pan? Might be wedged in the closest oil drain hole in the head as well
I did check, the oil drain holes are clear all the way down.
Quote from: JD on June 07, 2019, 11:29:42 AM
where's the loose baffle?
As for the missing rivet, drop the oil pan look in there.
The loose baffle was sitting on top of the rockers. It was small, just made to cover the PVC hole and attached by two rivets.
OK, my Boss 302 had a similar issue, a stupid repro part broke off, (oil cap on the valve cover) and it fell into the engine, how I found it was I wanted to inspect the heads, so I took off the valve cover and upon inspection, I found the part just "resting" in the head in a channel.....inspect what is under your valve cover closely! If I can find the pictures I will post it.