Ever since I went lapping in June the car would go through oil a little bit. i figured it was from a small leak I had. Stupid me.
Flamenco suspected a spun rod bearing.
Well he may have been right.
I fixed the leak a while ago and it still went through oil.(I surely wasnt burning it..no smoke out of the exhaust..it was going through too much for hardly any smoke to come out the back)

2 weeks ago I started to get a slight ticking noise in the motor . it would only happen at very very light throttle and sometimes when i revved it(while idling)..noise would be from 2500-4000 rpm.(obviously it quicker as the revs increase and slows down with the revs)
It then lengthened to about 5k rpm but only at this very light throttle.
I had to drive the car(daily driver) and I thought maybe it was something vibrating(like my i/c which is cracked at the mounting point on one side )
Last weekend I popped the hood and rev the motor a bit and it was at that point I knew it was in the motor. (sound was definatly coming from there)Again I drove it this week(had to) and tonight I was gonna go to the track to watch a friend run but the motor started to make crazy noise. It was the same noise but way louder. It was a ticking/metal slap sound. It wouldnt go away and no matter what throttle it was it was there.
I pulled off of the side of the road and called a buddy who said it sound like a rod/spun rod bearing.(i revved it while he was on the other end of the phone)
I limped it home very slow 5th gear @1500-2000 rpm and while doing that the sound would go away for a second or 2..then reappear. I would let off the gas when it did that. and so on and so on. 15 mins from my house took an hour driving like this.
but I made it.
Motor is not in good shape. It idles fine/sound fine but when you hit the gas it makes that damn metal slap sound(its really loud) I thought maybe it was a vavle at first but I dont think so anymore.
Spun rod bearing? anythoughts?
and yes the oil has gotten really low a few times since I didnt check it everyday when I started having problems with it eating oil.


Im really pissed not only at the car but myself.
I do have spare parts myself(a crank..rods etc) and can get motors easily but its just such a pain.


Modified by SiRkid at 3:47 AM 10/11/2003

 

Definitely not a SPUN rod bearing. A motor can only last around 5 minutes with one but you could have arod bearing going bad. You might be able to fix it by swapping the bearings before it gets any worse.

 

ahah , I was just doing some searching and pm'd you and saw that it cant be a SPUN bearing..
but something is up.
IF I could find my damn tape recorder I would post up a sound file


the sound is really loud. metal knock/slap sound.

 

Could possibly be rod knock due rod bearings.

 

bump
I have a similar problem...

 

Does it sound like mines?

http://65.49.87.73/MotorSound.avi

 

**** man!

All of us are having problems...WTF?...

I heard the exact same sound your describing in my motor RIGHT before it threw a rod....I definetly spun a bearing (due to no oil pressure... )

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">Definitely not a SPUN rod bearing. A motor can only last around 5 minutes with one but you could have arod bearing going bad. You might be able to fix it by swapping the bearings before it gets any worse.</TD></TR></TABLE>

I have to agree. I spun a rod bearing and the whole engine seized.

 

pretty much if we all just use the boost we are TUNED for and watch our oil levels, we shouldnt have a problem right?

 

exactly.
it is my fault to some degree. I never said it wasnt.

about that motor sound vid..thats nothing..that sounds like your injectors or something...

im getting MAJOR noise/knocking.
im thinking it could be clutch related possibly but it totally sounds like its inside the motor,middle to right side. (like in this thread, http://forums.clubsi.com/showf...art=1 scroll down, youll see it)
i havent checked anything yet though. will today.
I do have a small sound file of my beast revving but no where to host it.

also note I nursed it home last night and it took an hour.
ive driven it for 2 weeks with it making the same noise but really quiet and only at part throttle at certain revs(yeah me).
so if is a bearing it could just be cracked, although i pulled the plugs (like earl said) and it didnt go away..hrmm

 

i know exactly what noise you are talking about. did you put in the wrong oil in your engine?

 

?
no.
mobil 1 5w30.(yeah its a bit light)
been using it since day one.
its actually time for an oil change.

 

Another thought would be a broken piston skirt. What will happen is that the piston will **** in the bore and one side of the dome will come up and tap the cylinder head. It can do this intermittently, sometimes staying square with the bore and sometimes cocked. I've seen that happen.
you can do compression and leakdown tests that MIGHT give you a clue. If nothing else, just drop the pan to looks for parts or for anything unusual.

 

Ok, just signed up for we-todd.
here is the SOUND FILE of how it sounds. yes its shitty. I couldnt find my recorder so I used my phone.
Where it cuts out is actually when the knock sound goes away and the car idles fine.
i also reved it too about 2500-3k rpm

http://www.we-todd-did-racing....DE%3D
it was never that bad until last night!(not even close to that bad)

if you have headphones ues them. ahhaha.
to me it sound like the sound is on the right half of the motor..inside..
but who the heck knows until i check stuff.

 

Hard to tell specifically but does sound more like a piston being broken than a rod noise. Have you pulled the spark plugs just to look for anything goofy on them?

 

OMG that sounds horrible! i thought it might be a slight metallic sound like i've been getting but that **** sounds nasty. good luck bro/.

 

pulled the plugs and all are fine except number 3 looks a little to white(compared to the others) but i think its ok.

sorry for the unfocused pic but you get the idea.

 

just did a comp check.
basically 190 for all the cylinders except number 1 which was a tad lower.
i added oil to it (#1 for fun ..only about an ounce) and the comp just to like 280 ..wtf?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiRkid &raquo;</TD></TR><TR><TD CLASS="quote">
Ever since I went lapping in June the car would go through oil a little bit. </TD></TR></TABLE>

same thing happened to me. I spun a bearing while doing some "road racing." I couldn't really hear your video that well but from what i could gather it did sound like mine. The first night i heard the noise I thought it was just something that had come loose under the hood, it was VERY faint, then the next day it got a lil louder and we diagnosed it a spun rod bearing. Well, i didn't plan on driving it but later that night there was an emergency and i tried to drive it, after 10 miles the motor completly locked up! you run a stock b16a block right? i would probably just find another short block and drop it right in.

 

ive been driving it for like 2 weeks with that faint noise. then it totallygot nasty lst night..
my bet is its cracked. i took the vavle cover off and turned the motor over..the vavletrain seems to move fine.

so im gonna do an oil change next and check out the oil.
yes im on a stock b16.... how the hell do you make sure you dont spin/crack a bearing during road racing? fill yoru car up with more oil?

i have another block myself and a buddy has one ready to go but thng is hes busy so..who knows when i can get it in. thank goodness its thanksgiving thisweekend(in canada) so i have monday off.
gives me an extra day.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiRkid &raquo;</TD></TR><TR><TD CLASS="quote">how the hell do you make sure you dont spin/crack a bearing during road racing? fill yoru car up with more oil?
</TD></TR></TABLE>

i asked the road racing guys and they said to over-fill it with oil. Also, i think u can modify ur stock oil pan(or buy some jdm one) that helps prevent this. I was just playing around and ive decided now to just play w/ my car in the strait line.

 

lol. yeah i think i may too.
ok, i just drained the oil or should I say LACK OF OIL.
holy ******* **** there was hardly any
how it got so low so quick....i dunno.
i didnt see any metal in it either.
well froosh oil will go in and ill see if i can get over to my buddies place to change out the block.

 

man start takin the oil pan off! i wouldnt run it anymore you are only risking making matters worse.

 

pftt. if im gonna swap blocks... ill try to make it my buddies house
ill jsut take it off completely and have a look...
i dont know how it could go through oil like it did and im sure im not burning it.
i started it up and it made the noise still(no ****)
so who the hell knows.
maybe it is my clutch even though it doesnt sound like it to me but ya never know.
ive got my action 2md sitting around waiting for duty..maybe its time

 

maybe you didnt put enough oil in and that cuased the problem