Loud noise like a vibrating noise comming out from the engine or tranny

[STUPID FAST]

i think my clutch is chattering, its a act 2600 street disc and when i rev my car high during neutral or in gear it makes a loud noise like a vibrating noise comming out from the engine or tranny, but when i press in the clutch and rev it to that certain rpm, it stops. the rpm that i rev up to is around 3000-3500, for some reason it sounds like i threw a rod bearing or bent a rod but im not sure, i can still drive the car around no problem, goes in gear great. guy at me work place had told me that i spun a bearing in my shaft in the tranny..dont know..

 

[96gstdsm]

I just went through all this with my car. That sound sounds a lot like a bad throw out bearing. I just had mine go and it sounded like marbles banging around in the tranny. I just got a new ACT 2100 clutch and ACT flywheel installed. I now do have a little clutch chatter. I get it when i down shift at low rpm's. It makes my car vibrate a bit in a kinda pulsating way for a second when down shifting. A lot of the time the clutch setups come with a metal sleeved throw out bearing which tends to make a terrible rattle noise after not very long at all. When i took my old one off i didn't even see it to be broken just was very dry and must have been vibrating causing the noise. If you search on here for "bad throw out bearing" you should find a lot of symptoms and you can see if they sound simular.

 

[vr4play]

you can feel clutch chatter.

sounded like marbles banging around in the tranny

I'm glad you said that, because that is what my car sounds like right now. but only at certain rpms.

 

[STUPID FAST]

yes sometimes it vibrates like theres a million marbles when ever i shiftkbut in idle sometimes it also knocks like 3 times then it stops, this never happened before until i started launching it like 4 times one day to see how it still get outta the whole but then when i came back home and the turbo timer was on, it sounded like rods knocking but im not quite sure. should a bend rod be a constant knocking no matter what? driving it and idling it.

 

[daren_p]

Sounds like the TO bearing, because you hear noise when the clutch pedal isn't pressed & it goes away when the PP is engaged. It's not clutch chatter, which you get when engaging the clutch on certain models.

 

[STUPID FAST]

Sounds like the TO bearing, because you hear noise when the clutch pedal isn't pressed & it goes away when the PP is engaged. It's not clutch chatter, which you get when engaging the clutch on certain models.

so basically if i was to drive the car more it'll mess up my tranny. and the oly way to fix this problem is to tear the tranny apart and rebuilt it?

 

[96gstdsm]

so basically if i was to drive the car more it'll mess up my tranny. and the oly way to fix this problem is to tear the tranny apart and rebuilt it?

From what i have read it is ok to drive it with the tob being bad. Don't take my word for it though as i am newbie as well. But when i found out mine was bad i was told it was fine to drive it by multiple people with all different cars including eclipse's, and it would not do anything bad to my car. But like i said check that with someone else before driving it.
Good luck with it. It's just a terrible noise so i had to get rid of it, and get a good clutch at the same time.

 

[daren_p]

I don't think you would do any major damage if you drive around with a noisy TOB for awhile, but I guess there is always the chance it could completely explode (as we don't know exactly what has happened to it) & do further damage to the clutch & flywheel assembly. Your correct, the only way to change the TOB is to unbolt the tranny from the motor.

 

[STUPID FAST]

I don't think you would do any major damage if you drive around with a noisy TOB for awhile, but I guess there is always the chance it could completely explode (as we don't know exactly what has happened to it) & do further damage to the clutch & flywheel assembly. Your correct, the only way to change the TOB is to unbolt the tranny from the motor.

well i thought it was my motor that was messed up or something thats why i bought a built motor already and a stage 3 shep tranny...well i guess imma have to sell the motor and the tranny like that anyone ups for grabs?? jdm 6bolt with 264 crane cams and topline lifters?

 

[STUPID FAST]

i dont know but i think i spun a rod bearing, its constantly making a knocking noise at 500 rpm to 1000 rpm, but when i rev it up to 3000 rpm it rattles like a mad man. is it just pistons slapping against the wall or a rod bearing, also i snapped my timing belt in half, is that one of the problems also? also when i press in the clutch theres a knocking noise that also goes away? is it my clutch? throw out bearings , input bearings in my tranny?? please help me out guys. ive searched but does not solve anything.

 

[freshfabiotsi]

if the timing belt snapped then the car should'nt be running...and if it made that sound before the car died then most likely it was the sound of the valves hitting the pistons and bending the valves... i just bought a car to fix up and sell and thats what ended up happening to it. the hydrolic tensioner went out and a couple teeth were stripped off of the t-belt and it bent 4 valves.

 

[freshfabiotsi]

im just trying to help out a little, or maybe even pin-point what happend. do you have any pictures?

 

[UKNOWHO]

if the timing belt snapped then the car should'nt be running...and if it made that sound before the car died then most likely it was the sound of the valves hitting the pistons and bending the valves... i just bought a car to fix up and sell and thats what ended up happening to it. the hydrolic tensioner went out and a couple teeth were stripped off of the t-belt and it bent 4 valves.

+1 if t-belt snapped while car was running ## gonna have bent valves

 

[STUPID FAST]

maybe its my valves hitting the pistons, cause i guess i just installed the 3g lifters and rotated the cams to put the lifters in. dont know if that'll cause that problem, what can cause that problem? noise sounded like its comming from the head also. also the noise was already there before i snapped the timing belt. it happened when i put in my turbo and ran it a couple of times came back and parked the car, turbo timer was on and all i hear is a knocking noise; it wasnt bad at first but now its really bad. after that noise ive never drove it. my mechanic told me that it was tranny issue but i can shift into gears easily. and whats with the clutch deal when pressed in it stops a certain knocking noise. when shifting at high rpm it rattles.

thanks for all the help!

 

[STUPID FAST]

+1 if t-belt snapped while car was running ## gonna have bent valves

ok sorry guys timing belt didnt actually snap it just broke off a piece of the belt still intacted and still starts.. sorry for the typo. thanks

 

[pooker]

Drop the pan and look at the side for any spun bearings or discolored rods.

 

[STUPID FAST]

thats one of my plans for tomarrow. hahah damn i hope i dont see any metal pieces.

 

[Calan]

... i just installed the 3g lifters and rotated the cams to put the lifters in. ...

First of all, if you have rattle-like hard knock at 500rpm, I wouldn't be revving it to 3000

If you "rotated the cams" with the t-belt off, you most likely whacked your crank/cam timing. Did you do a thorough job of realigning the crank and cam timing marks, CAS, setting t belt tension, etc etc and then check, recheck, and recheck it?

Sounds like you may have (at the very least) bent valves at this point... but I'm far from an expert on these motors.

Hope it's not that serious....

EDIT:

"when i press in the clutch theres a knocking noise that also goes away"

Is this a different knock that disappears when the clutch is pressed, or does the original one that sounds like it's coming from the heads go away? WTF

 

[DJYoshaBYD]

sounds like a rod bearing

 

[STUPID FAST]

First of all, if you have rattle-like hard knock at 500rpm, I wouldn't be revving it to 3000

If you "rotated the cams" with the t-belt off, you most likely whacked your crank/cam timing. Did you do a thorough job of realigning the crank and cam timing marks, CAS, setting t belt tension, etc etc and then check, recheck, and recheck it?

Sounds like you may have (at the very least) bent valves at this point... but I'm far from an expert on these motors.

Hope it's not that serious....

EDIT:

"when i press in the clutch theres a knocking noise that also goes away"

Is this a different knock that disappears when the clutch is pressed, or does the original one that sounds like it's coming from the heads go away? WTF

its a different sound that goes away.