spun rod bearing
 

I live in Hickory NC and I am pretty sure I spun a rod bearing in my 2001 s2000. I just bought the car a month ago and have put less than 3k miles on it, there is only 65k miles on the car. I was driving average speed down the highway and out of nowhere the motor began knocking very loud. I immediately pulled over and checked oil and was almost 3 quarts low. I filled the oil to proper levels and it quieted a little but still sounds horrific. I do not know much at all about cars and was looking for some help or knowledge. Please let me know what I can or should do. I dont have the money to take it to a dealer right now to get them to fix it. Thanks in advance for any help!

Welcome,

Unfortunately it doesn't sound good. Letting the car get 3 quarts low on oil usually means that bad things will happen internally. You will need to either do the work yourself, which it is a lot of and very involved, or find a shop that will check it for you. Most likely they will have to pull the motor apart to take a look at it and go from there.

You might be better off looking around for a used motor in good shape and just swap them out.

Either option is not a cheap fix, several thousand at least.

Good luck.

Kevin

What is sounds like? Are you sure that is not the chain tension???. Search for it.

I just watched a you tube video with the timing chain ticking and mine is more or a knocking sound, sounds like it is coming from the top of my engine

Post a video. There should be no way your engine is knocking, even with 3 qrts low. I was going 120 around a uphill right-handed sweeper when my previous engine went on me. Are you sure you didn't do ANYTHING that would have caused this? No one will judge you, we just need information to help determine what this is.

these engines don't like running on low oil levels. quick way to blow one up! sounds like who owned it before abuse the crap out of it. unfortunatly its your problem now. take the oil filter off and cut it open to see if there is any metal in it. if so, not good. you could also pull the valve cover to inspect the top end just to be sure nothing up top let go. these are things you can do yourself. good luck.

http://youtu.be/HzDW-4UiUIw

that is a video of what its doing

not good!

It's either the TCT or rod bearings. Pull the TCT and sandblast the worm gear and if that doesn't fix it then it's the rod bearings. Then just pull the oil pan and check for yourself. Takes no time at all.

:iagree:.

Haven't you read checking motor oil level in the S2K is critical? :banghead:

Yeaahhhh thats a rod bearing. I was listening through my phone and i recognize that sound. I have an engine for sale built head for 2k and a free tranny also with an ip tct . Lmk if you need it

i agree its sounds like its in the top - valve train, timing chain or tensioner... does not sound like rod knock, it's too tingy soundings, rod knock has a more soild knock

I have a guy coming to check out my motor this weekend but if he says it's bad I'll need your engine, where are you located?

Fort Bragg

was the vtec acting funny before this happened?

Vtec has been acting fine and never had an issue

That's way too loud to be the TCT. You almost certainly have a spun bearing.

I, too, have a spare 2L motor sitting in my garage, if you're interested.

What are you asking for yours?

I'd take his if I were you. Not saying mine is bad but mine has been under pressure for over 10k miles

:stick: lol UNDER PRESSURE FOR 10K! define pressure---redline! so what your saying is it's good and broke in.

Ohhhh yeah nice and broke in 11k rpm capable but just revving to 10k

11000 rpm, thats a screamer!

Yeah never took it there. Too scared

Did you ever get a engine oil light while the car was running? Does your car shut off on low rpm's randomly after a coast?

Neither if those has happened, I'm still driving the car

I think I have the same issue. The guys that changed my oil didnt tighten the oil cap and it popped off, sending oil everywhere. I did not get any lights, but now I have the same sound. I thought TCT, had Billman send me one, changed it and sound is still there.
Do you not recommend fixing it?
Is it better to replace motor?
Trying to see what my options would be.

Hate to Revive this but ya'll seem most helpful. My car is making the exact same noise albeit much slower in tempo and throwing CEL Codes for random misfire + misfires on all 4 cyclinders. Furthermore when coming to a stop after a 15min+ drive the car stutters and almost dies. Cleaned injectors, MAP, changed plugs and Oil and no luck. Is replacing the engine necessary or can i just replace the bearings?
I'll be Pulling oil pan after having my valves checked and retainers replaced as i still have the ap1 ones. Has 60k miles on the odo.
Thanks

Have you checked compression? How did the old oil look when you changed it? More importantly, how did it smell? Any burned or aluminum smell is bad news. Put a gauge on the oil galley and see what the real number is. The light doesn't come on until pressure is very low. If it oil starved enough to spin a bearing, look very carefully under the valve cover for damage too. With the stuttering and dying, sounds like you have more going on than just the noise.

I am actually having same problem, just got new rod bearing replaced due to spun bearing, but was good for about 10 min then stalled while coasting, my knock does not sound as loud as that but still loud knock, thinking I have to replace the rod itself.... Got 02 with 100k miles.... Also oil light did not come on when first knocking happen but was caused by low

You spun a bearing and then just replaced the bearings to fix it? That's a recipe for a 100% failure rate.

Replaced bearing and polished the crank, what more is there to it?

Get the car to Jason (CNC Speedshop). He can diagnose and repair...be expecting a few thousand though, as the motor may need a rebuild. If there is anything you've been wanting to do to boost performance, go ahead now....the block needs to be opened and redone.

When you spin a bearing, the big end of the rod distorts, so you MUST replace the rod. Polishing the crank does nothing for it being out of round. When you spin a bearing, you should be replacing the crankshaft and the rod it spun on... As well as the oil heat exchanger.

Also you might need new oil squirters. If it was #4 or #3(closest to firewall) that spun you probably have the old style and that's how long my engine lasted. It had cylinder wall scrapes and burning so it was just swapped for a different engine.