Another "WTF is this noise" thread...

**35th-ANV-SS** · 12-01-2010, 01:23 PM

A quick way to see if it's rod bearings is to drain the oil.

If you have metal shavings in the oil...well

**SSwt00SS** · 12-01-2010, 04:41 PM

Originally Posted by 35th-ANV-SS

A quick way to see if it's rod bearings is to drain the oil.

If you have metal shavings in the oil...well

not always the case. i drained mine twice in my '98 and didn't show anything. only after pulling apart the engine and pulling the oil pan could i see shavings. i ended up having 4 spun rod bearings!!! found that out only after i pulled the valve covers, checked the rockers, pushrods, and all was fine. then i pulled the heads and checked all the lifter, again all were fine. that ment only one thing, ROD BEARINGS. pulled the motor, only had to polish the crank journals, and rebuild the engine. all the clearances and tolerances are with GM specs. now the car is quiet, and runs like a beast.

my oil pressure was normal, i wasnt burning/using oil, nothing to indicate spun bearings, but thats what it is. the only sound was the knocking sound that was more apparent from the topside of the engine, not underneath.

the sound was at start up, then would go away once warmed, and show up around 2000rpm. quiet under load/acceleration, but at a sustained/held RPM 2000 or higher the sound was heard.

anyways, i rebuilt my 1st Ls1, and honesty it's not that complicated. just takes time to make sure everything checks out.

**BashamWS6** · 12-01-2010, 06:34 PM

well. had a friend of my dads check it out since he was over..
he aint no certified tech but he knows more than just changing oil filters...
he says most likely a lifter...
its almost ticking/tapping all the time now once it warms up
louder too... and now in neutral
sounds coming from passenger side and like below the fuel rails...
i called Uebelhor today but forgot they were an hour ahead so they were closed...ill call em tomarrow a schedual her in...

**35th-ANV-SS** · 12-01-2010, 07:10 PM

Someone else might chime in on this, but doesn't Seafoam work in "some" cases for a stuck lifter? Maybe it's just gunked up??

**BashamWS6** · 12-01-2010, 07:15 PM

well im going to see if maybe some Lucus oil or some thicker oil will help it out. but first ill see what the shop has to say

**SSwt00SS** · 12-01-2010, 08:30 PM

Get Rizilone Oil.

From what you describe, it's exactly what sound the engine in my '98 was making. It would take a lot for a lifter to just "fail". The sound was topside my passenger side as well, towards the top of the block/head. Not down low like a rod bearing.

Best of luck.

**35th-ANV-SS** · 12-01-2010, 08:33 PM

That's what I remember seeing before now...Rizilone Oil!

**BashamWS6** · 12-01-2010, 08:36 PM

could i get this at autozone or walmart or o'rileys or somewhere like that?

**35th-ANV-SS** · 12-01-2010, 08:38 PM

Yes. I think the spelling might be Rislone though.

**Mr. Luos** · 12-01-2010, 08:41 PM

Check pushrods first and foremost.

Tick or knock?

**Demon_Z28** · 12-01-2010, 08:48 PM

I was going to say that bent pushrods can cause some nasty noise as well. Take them out and roll them across a flat surface and if they wobble while rolling then they are probably bent.

**35th-ANV-SS** · 12-01-2010, 08:51 PM

This was covered on page 1...post 8

**BashamWS6** · 12-01-2010, 08:51 PM

its a ticking/tapping ill let the shop know that i want it all checked....
rods, rod bearings, idler pulley, lifters...
(the best of what i can describe it sounds like a fast repeated ticking/clicking sound like when you try to start a car with a dead battery)

**Mr. Luos** · 12-01-2010, 08:52 PM

Can't check the rod bearings without removing motor....

Check the pushrods yourself. 2 hours MAX for someone that has never done it.

**Demon_Z28** · 12-01-2010, 08:58 PM

Originally Posted by 35th-ANV-SS

This was covered on page 1...post 8

sorry I failed to read most of the other comments

**BashamWS6** · 12-01-2010, 09:03 PM

Originally Posted by Mr. Luos

Can't check the rod bearings without removing motor....

Check the pushrods yourself. 2 hours MAX for someone that has never done it.

hardly...
dad got pissy when i was tearing my interior out to install my speakers...
id hate to see his face when he sees my engine in pieces...and i dont think id trust myself either...

**BashamWS6** · 12-13-2010, 01:58 PM

well bad fucking news...it turned into a clanking noise after shes warmed up... dad insists that i just need lucus oil but its really clanging now...

**SSwt00SS** · 12-13-2010, 03:01 PM

entertain us by posting a video for us to hear the noise!

**BashamWS6** · 12-13-2010, 08:01 PM

Originally Posted by SSwt00SS

entertain us by posting a video for us to hear the noise!

ill see what i can do... dial up makes uploading a bitch... ill see if i can get one up tomarrow tho...

looking at prices of possible parts i might need to replace on texas speed tho..
LS6 oil pump $110 (ported $175)
h rod bearings $73
ls7 lifters $140
ls7 pushrods $150
ls1 rocker arms $250
ls1 crankshaft $750

they have a GM 6.0L cast iron block for $750...needs pistons rods and a crankshaft tho... hmmm. wonder what else is needed for the swap...ill have to look into this...

wtf is a rotating assembly?

**BashamWS6** · 12-13-2010, 08:48 PM

heres a little help...pg 2 post 28...
http://www.ls1.com/forums/showthread...24#post2514824
has two videos..
its more like the first.. but more clanky...but nowhere near as bad as the 2nd vid
so would i bent rod or lifter make a clanking sound in between these two?
*by two i of course mean between a spun rod and a piston slap?