Tick tick tick update (rod knock) ***putting it back togethe

[Bonnewagon]

Re: Tick tick tick

A connecting rod and a lifter make very different sounds. Lifters and rockers "tick" as the title suggests, but a rod "knocks" like a woodpecker on a dead tree. Every spun rod bearing I've ever had could be artificially quieted by adding a can or two of STP to thicken the oil enough so the oil film between the rod and crank prevented metal to metal contact, which is the purpose of oil anyway. I was able to nurse a 400 to work every day until the weather warmed up by keeping the rpm's below 1500, above that it knocked like crazy. Rods usually don't knock at idle if you have decent oil pressure.

 

[Dennyboy]

Re: Tick tick tick

A connecting rod and a lifter make very different sounds. Lifters and rockers "tick" as the title suggests, but a rod "knocks" like a woodpecker on a dead tree. Every spun rod bearing I've ever had could be artificially quieted by adding a can or two of STP to thicken the oil enough so the oil film between the rod and crank prevented metal to metal contact, which is the purpose of oil anyway. I was able to nurse a 400 to work every day until the weather warmed up by keeping the rpm's below 1500, above that it knocked like crazy. Rods usually don't knock at idle if you have decent oil pressure.

that's the thing i have good oil pressure but.... i'm not getting oil to the top of the push rods..... so confusing. also this just started every once and a while it will just stop for like three seconds then come back.

also just for when i start collecting parts. are the bucik,olds and pontiac 455 all the same or is there any difference?

 

[pontiacgp]

Re: Tick tick tick

check to make sure you have the right distributor and that no one tried to modify the housing for some reason, the distributor directs the oil to the valve train

 

[tc1959]

Re: Tick tick tick

I have seen this a couple of times in the last thirty years, Just a "guess" but a gally plug that comes loose will keep the top end from getting oil.
The bottom will still have good oil pressure.
Also have seen a cam bearing walk out and cause no oil to the top end.

 

[Dennyboy]

Re: Tick tick tick

what area of the engine is that picture taken. having a little brain fart i think.

 

[Joltcola]

Re: Tick tick tick

A connecting rod and a lifter make very different sounds. Lifters and rockers "tick" as the title suggests, but a rod "knocks" like a woodpecker on a dead tree. Every spun rod bearing I've ever had could be artificially quieted by adding a can or two of STP to thicken the oil enough so the oil film between the rod and crank prevented metal to metal contact, which is the purpose of oil anyway. I was able to nurse a 400 to work every day until the weather warmed up by keeping the rpm's below 1500, above that it knocked like crazy. Rods usually don't knock at idle if you have decent oil pressure.

that's the thing i have good oil pressure but.... i'm not getting oil to the top of the push rods..... so confusing. also this just started every once and a while it will just stop for like three seconds then come back.

also just for when i start collecting parts. are the bucik,olds and pontiac 455 all the same or is there any difference?

I dont belive the parts are interchangeable...I think maybe pontiac and olds 455's can swap some stuff but the Buick is a beast of its own...

 

[pontiacgp]

Re: Tick tick tick

what area of the engine is that picture taken. having a little brain fart i think.

one is covered by the bell housing and the other by the timing chain cover

 

[Blake442]

Re: Tick tick tick

also just for when i start collecting parts. are the bucik,olds and pontiac 455 all the same or is there any difference?

All 3 are completely different.
The only things you can really swap between motors is distributor caps, thermostats, and oil fill caps...

 

[Dennyboy]

Re: Tick tick tick

allright well i dumped a quart of transmission fluid in the oil and cleaned out the pushrods and adjusted the lifters. i now have oil coming out of the push rods....... but i still have the knock. so the engine will be pulled soon to check out what is broken. what do you guys think i'm looking at?

 

[Oldstech]

Re: Tick tick tick

Do yourself a favor an go to Oldspower.com and ask a Olds Forum. This forum is the melting pot of Gbody. And alot of Chevys. Olds and Chevy are very different.