alright so i got a new truck with a rod knockin 22r. pulled the oil pan and found obviously a loose rod but also a broken guide and a spring in the oil pan. i just started pullin the head planning on a spare bottom end i have going in with new timing gears and chain but when i pulled the VC i found that the timing chain and gear looked virtually brand new.. like really new. the chain also has tons of slack.. so what would cause all of this..?
my thought was maybe they didnt shim the head when a gasket was replaced in the past, causing chain slack, bad rod bearing, and a broken guide but what are your thoughts? im stumped.

 

 

"unintelligent" people

The chain should be taught by the auto-tensioner. Make sure that its pushing out against the chain...

As for where teh guide and spring came from no clue. As long as you have all your guides and springs still installed, i'd say they dropped some and forgot to get them out maybe? When I bought my '85 a month or so ago, it had a rod knock, turned out the PO was "unintelligent" and didn't know how to rebuild an engine. It then cost me the engine when the rod blew out the side of the case. So...be sure to get it squared away.

 

i thought you were calling me unintelligent at first lol. anyways yeah this is the most sensible idea of whats going on that ive heard.. this is somewhat new to me so im learning still. sounds like the tensioner is gone and i think that broken'd the oil pump that may be where the spring is from and would explain the rod knock.. well this gives me a good direction i will know more when i have time to really git in there im still working on getting the head off
thanks!

 

pics or it didn't happen.

 

....i said that?

i bet you'd really like that

 

This is the only part where I disagree. The oil pump is designed to deliver it's contents to the upper-level area of the motor (the head). The end caps and bottom of the connecting rod should dip into the oil pan and "slosh" oil along the crank bearings and further up the cylinder. Even if you had an oil pump go out, that would only affect the top end of the motor... unless you had "chunks" of God knows what interfering with moving parts.

 

I see. well my other thought was that someone dropped it in there wile wrenching and didnt bother to remove the oil pan to get it.. i donno i'm gonna finish pulling the head and timing chain cover and see whats up maybe ill find where it goes

 

I just did the head gasket and timing chain on my buddies truck. I don't remember there being any springs anywhere but on the valves.

I do however remember having to pull the front diff to get the oil pan off. lol He has a 93.
We had to pull the oil pan because the remaining parts of the timing chain guides were lost down there!

Good Luck!

 

its def. not a valve spring ive never seen one like it.
yeah oil pans are a pita on ifs trucks. on my 84 you just loosen a few nuts/bolts and drop the thing right off.

 

Ya, it's the same on my '85. I did it once before I lifted it. There was plenty of room. Now that it's 4+ inches higher, There should be nothing interfering except the skidplate. lol

As far as the slack in your timing chain, your chain tensioner is probably worn to nothing, as well as it might have died all together. I think someone mentioned that it works on oil pressure, but if the little piston's seal died, it wont hold pressure and it will just blow past. I would imagine it has an o-ring in there somewhere, but I didn't see anyway to rebuild it. We replaced it on my buddies truck. Those suckers aren't cheap either!

Good Luck with it. Keep us posted

 

Do you have a pic of the spring? I'd be curious to see it

 

could it be the spring out of the chain tentioner
I have never seen one but theres one in there

hope that helps

it might have fallen off because the po didnt touque it down right

 

 

That looks to me like the spring inside the chain tensioner and i disagree with extraslow there are ail passages in the crank for a reason and if your rods are hitting the oil the crankcase is to full see if that happens it "cavitates" causing air to become trapped in the oil and then the efficiancy of the oil drops

 

ok i just got it all apart.. how do i test the timing chain tensioner?

 

If the chain tensioner is in-tact, the spring may have come from the old one that was replaced. They may have opted for not removing the oil pan when it fell. lol

Also, like Emt-Iyotaguy said. If the crank dips in the oil, it is way to full! That is one of the reasons the oil pan has the low sump on one end. And if you look at the inside of the oil pan while it is removed, you will see the "windage trays." These keep the air being moved by the crank from stirring up the oil in the pan.

Thanks for the Pic!! That helps.
Keep us posted!

 

Yeah i was pretty sure that would throw oil up in the cylinders. anyways the guy at the parts store is certain that the spring is the pressure regulator spring from the oil pump. anyways parts should be here next paycheck thanks for yer help guys!